xenial (8) shorewall.8.gz

Provided by: shorewall_5.0.4-1_all bug

NAME

       shorewall - Administration tool for Shoreline Firewall (Shorewall)

SYNOPSIS

       shorewall [trace|debug [nolock]] [-options] add { interface[:host-list]... zone | zone host-list }

       shorewall [trace|debug [nolock]] [-options] allow address

       shorewall [trace|debug [nolock]] [-options] call function [parameter ...]

       shorewall [trace|debug] [-options] [check | ck ]  [-e] [-d] [-p] [-r] [-T] [-i] [directory]

       shorewall [trace|debug [nolock]] [-options] clear [-f]

       shorewall [trace|debug [nolock]] [-options] close { open-number | sourcedest [protocol [ port ]]}

       shorewall [trace|debug] [-options] [compile | co ]  [-e] [-c] [-d] [-p] [-T] [-i] [directory] [pathname]

       shorewall [trace|debug [nolock]] [-options] delete { interface[:host-list]... zone | zone host-list }

       shorewall [trace|debug [nolock]] [-options] disable { interface | provider }

       shorewall [trace|debug [nolock]] [-options] drop address

       shorewall [trace|debug] [-options] dump [-x] [-l] [-m] [-c]

       shorewall [trace|debug [nolock]] [-options] enable { interface | provider }

       shorewall [trace|debug [nolock]] [-options] export [directory1] [user@]system[:directory2]

       shorewall [trace|debug [nolock]] [-options] forget [filename]

       shorewall [trace|debug] [-options] help

       shorewall [trace|debug] [-options] hits [-t]

       shorewall [trace|debug] [-options] ipcalc {address mask | address/vlsm}

       shorewall [trace|debug] [-options] iprange address1-address2

       shorewall [trace|debug] [-options] iptrace iptables match expression

       shorewall [trace|debug [nolock]] [-options] logdrop address

       shorewall [trace|debug] [-options] logwatch [-m] [refresh-interval]

       shorewall [trace|debug [nolock]] [-options] logreject address

       shorewall [trace|debug] [-options] noiptrace iptables match expression

       shorewall [-options] open source dest [ protocol [ port ] ]

       shorewall [trace|debug [nolock]] [-options] reenable { interface | provider }

       shorewall [trace|debug [nolock]] [-options] refresh [-n] [-d] [-T] [-i] [-D directory ] [chain...]

       shorewall [trace|debug [nolock]] [-options] reject address

       shorewall [trace|debug] [-options] remote-start [-s] [-c] [-r root-user-name] [-T] [-i] [directory]
                 system

       shorewall [trace|debug] [-options] remote-reload [-s] [-c] [-r root-user-name] [-T] [-i] [directory]
                 system

       shorewall [trace|debug] [-options] remote-restart [-s] [-c] [-r root-user-name] [-T] [-i] [directory]
                 system

       shorewall [trace|debug [nolock]] [-options] reset [chain ...]

       shorewall [trace|debug [nolock]] [-options] restart [-n] [-p [-d]] [-f] [-c] [-T] [-i] [-C] [directory]

       shorewall [trace|debug [nolock]] [-options] restore [-n] [-p] [-C]  [filename]

       shorewall [trace|debug [nolock]] [-options] run command [parameter ...]

       shorewall [trace|debug [nolock]] [-options] safe-restart [-d] [-p] [-t timeout] [directory]

       shorewall [trace|debug] [-options] safe-start [-d] [-p] [-t timeout] [directory]

       shorewall [trace|debug [nolock]] [-options] save [-C]  [filename]

       shorewall [trace|debug [nolock]] [-options] savesets

       shorewall [trace|debug] [-options] {show | list | ls } [-x] {bl|blacklists}

       shorewall [trace|debug] [-options] {show | list | ls } [-b] [-x] [-l]
                 [-t {filter|mangle|nat|raw|rawpost}] [chain...]

       shorewall [trace|debug] [-options] {show | list | ls } [-f] capabilities

       shorewall [trace|debug] [-options] {show | list | ls }
                 {actions|classifiers|connections|config|events|filters|ip|ipa|macros|zones|policies|marks}

       shorewall [trace|debug] [-options] {show | list | ls } event event

       shorewall [trace|debug] [-options] {show | list | ls } [-c] routing

       shorewall [trace|debug] [-options] {show | list | ls } macro macro

       shorewall [trace|debug] [-options] {show | list | ls } [-x] {mangle|nat|raw|rawpost}

       shorewall [trace|debug] [-options] {show | list | ls } tc

       shorewall [trace|debug] [-options] {show | list | ls } [-m] log

       shorewall [trace|debug [nolock]] [-options] start [-n] [-f] [-p] [-c] [-T [-i]] [-C] [directory]

       shorewall [trace|debug [nolock]] [-options] stop [-f]

       shorewall [trace|debug] [-options] status [-i]

       shorewall [trace|debug [nolock]] [-options] try directory [timeout]

       shorewall [trace|debug] [-options] update [-b] [-d] [-r] [-T] [-a] [-i] [-A] [directory]

       shorewall [trace|debug] [-options] version [-a]

DESCRIPTION

       The shorewall utility is used to control the Shoreline Firewall (Shorewall).

OPTIONS

       The trace and debug options are used for debugging. See
       http://www.shorewall.net/starting_and_stopping_shorewall.htm#Trace[1].

       The nolock option prevents the command from attempting to acquire the Shorewall lockfile. It is useful if
       you need to include shorewall commands in /etc/shorewall/started.

       The options control the amount of output that the command produces. They consist of a sequence of the
       letters v and q. If the options are omitted, the amount of output is determined by the setting of the
       VERBOSITY parameter in shorewall.conf[2](5). Each v adds one to the effective verbosity and each q
       subtracts one from the effective VERBOSITY. Alternatively, v may be followed immediately with one of
       -1,0,1,2 to specify a specify VERBOSITY. There may be no white-space between v and the VERBOSITY.

       The options may also include the letter t which causes all progress messages to be timestamped.

COMMANDS

       The available commands are listed below.

       add { interface[:host-list]... zone | zone host-list }
           Adds a list of hosts or subnets to a dynamic zone usually used with VPN's.

           The interface argument names an interface defined in the shorewall-interfaces[3](5) file. A host-list
           is comma-separated list whose elements are host or network addresses..if n .sp
               Caution
               The add command is not very robust. If there are errors in the host-list, you may see a large
               number of error messages yet a subsequent shorewall show zones command will indicate that all
               hosts were added. If this happens, replace add by delete and run the same command again. Then
               enter the correct command.

           Beginning with Shorewall 4.5.9, the dynamic_shared zone option (shorewall-zones[4](5)) allows a
           single ipset to handle entries for multiple interfaces. When that option is specified for a zone, the
           add command has the alternative syntax in which the zone name precedes the host-list.

       allow address
           Re-enables receipt of packets from hosts previously blacklisted by a drop, logdrop, reject, or
           logreject command.

       call function [ parameter ... ]
           Added in Shorewall 4.6.10. Allows you to call a function in one of the Shorewall libraries or in your
           compiled script. function must name the shell function to be called. The listed parameters are passed
           to the function.

           The function is first searched for in lib.base, lib.common, lib.cli and lib.cli-std. If it is not
           found, the call command is passed to the generated script to be executed.

       check [-e] [-d] [-p] [-r] [-T] [-i] [directory]
           Compiles the configuration in the specified directory and discards the compiled output script. If no
           directory is given, then /etc/shorewall is assumed.

           The -e option causes the compiler to look for a file named capabilities. This file is produced using
           the command shorewall-lite show -f capabilities > capabilities on a system with Shorewall Lite
           installed.

           The -d option causes the compiler to be run under control of the Perl debugger.

           The -p option causes the compiler to be profiled via the Perl -wd:DProf command-line option.

           The -r option was added in Shorewall 4.5.2 and causes the compiler to print the generated ruleset to
           standard out.

           The -T option was added in Shorewall 4.4.20 and causes a Perl stack trace to be included with each
           compiler-generated error and warning message.

           The -i option was added in Shorewall 4.6.0 and causes a warning message to be issued if the current
           line contains alternative input specifications following a semicolon (";"). Such lines will be
           handled incorrectly if INLINE_MATCHES is set to Yes in shorewall.conf[2](5).

       clear [-f]
           Clear will remove all rules and chains installed by Shorewall. The firewall is then wide open and
           unprotected. Existing connections are untouched. Clear is often used to see if the firewall is
           causing connection problems.

           If -f is given, the command will be processed by the compiled script that executed the last
           successful start, restart or refresh command if that script exists.

       close { open-number | source dest [ protocol [ port ] ] }
           Added in Shorewall 4.5.8. This command closes a temporary open created by the open command. In the
           first form, an open-number specifies the open to be closed. Open numbers are displayed in the num
           column of the output of the shorewall show opens command.

           When the second form of the command is used, the parameters must match those given in the earlier
           open command.

       compile [-e] [-c] [-d] [-p] [-T] [-i] [ directory ] [ pathname ]
           Compiles the current configuration into the executable file pathname. If a directory is supplied,
           Shorewall will look in that directory first for configuration files. If the pathname is omitted, the
           file firewall in the VARDIR (normally /var/lib/shorewall/) is assumed. A pathname of '-' causes the
           compiler to send the generated script to it's standard output file. Note that '-v-1' is usually
           specified in this case (e.g., shorewall -v-1 compile -- -) to suppress the 'Compiling...' message
           normally generated by /sbin/shorewall.

           When -e is specified, the compilation is being performed on a system other than where the compiled
           script will run. This option disables certain configuration options that require the script to be
           compiled where it is to be run. The use of -e requires the presence of a configuration file named
           capabilities which may be produced using the command shorewall-lite show -f capabilities >
           capabilities on a system with Shorewall Lite installed

           The -c option was added in Shorewall 4.5.17 and causes conditional compilation of a script. The
           script specified by pathname (or implied if pathname is omitted) is compiled if it doesn't exist or
           if there is any file in the directory or in a directory on the CONFIG_PATH that has a modification
           time later than the file to be compiled. When no compilation is needed, a message is issued and an
           exit status of zero is returned.

           The -d option causes the compiler to be run under control of the Perl debugger.

           The -p option causes the compiler to be profiled via the Perl -wd:DProf command-line option.

           The -T option was added in Shorewall 4.4.20 and causes a Perl stack trace to be included with each
           compiler-generated error and warning message.

           The -i option was added in Shorewall 4.6.0 and causes a warning message to be issued if the current
           line contains alternative input specifications following a semicolon (";"). Such lines will be
           handled incorrectly if INLINE_MATCHES is set to Yes in shorewall.conf[2](5).

       delete { interface[:host-list]... zone | zone host-list }
           The delete command reverses the effect of an earlier add command.

           The interface argument names an interface defined in the shorewall-interfaces[3](5) file. A host-list
           is comma-separated list whose elements are a host or network address.

           Beginning with Shorewall 4.5.9, the dynamic_shared zone option (shorewall-zones[4](5)) allows a
           single ipset to handle entries for multiple interfaces. When that option is specified for a zone, the
           delete command has the alternative syntax in which the zone name precedes the host-list.

       disable { interface | provider }
           Added in Shorewall 4.4.26. Disables the optional provider associated with the specified interface or
           provider. Where more than one provider share a single network interface, a provider name must be
           given.

           Beginning with Shorewall 4.5.10, this command may be used with any optional network interface.
           interface may be either the logical or physical name of the interface. The command removes any routes
           added from shorewall-routes[5](5) and any traffic shaping configuration for the interface.

       drop address
           Causes traffic from the listed addresses to be silently dropped.

       dump  [-x] [-l] [-m] [-c]
           Produces a verbose report about the firewall configuration for the purpose of problem analysis.

           The -x option causes actual packet and byte counts to be displayed. Without that option, these counts
           are abbreviated.

           The -m option causes any MAC addresses included in Shorewall log messages to be displayed.

           The -l option causes the rule number for each Netfilter rule to be displayed.

           The -c option causes the route cache to be dumped in addition to the other routing information.

       enable { interface | provider }
           Added in Shorewall 4.4.26. Enables the optional provider associated with the specified interface or
           provider. Where more than one provider share a single network interface, a provider name must be
           given.

           Beginning with Shorewall 4.5.10, this command may be used with any optional network interface.
           interface may be either the logical or physical name of the interface. The command sets /proc entries
           for the interface, adds any route specified in shorewall-routes[5](5) and installs the interface's
           traffic shaping configuration, if any.

       export [ directory1 ] [ user@]system[:directory2 ]
           If directory1 is omitted, the current working directory is assumed.

           Allows a non-root user to compile a shorewall script and stage it on a system (provided that the user
           has access to the system via ssh). The command is equivalent to:

                   /sbin/shorewall compile -e directory1 directory1/firewall &&\
                   scp directory1/firewall directory1/firewall.conf [user@]system:[directory2]

           In other words, the configuration in the specified (or defaulted) directory is compiled to a file
           called firewall in that directory. If compilation succeeds, then firewall and firewall.conf are
           copied to system using scp.

       forget [ filename ]
           Deletes /var/lib/shorewall/filename and /var/lib/shorewall/save. If no filename is given then the
           file specified by RESTOREFILE in shorewall.conf[2](5) is assumed.

       help
           Displays a syntax summary.

       hits [-t]
           Generates several reports from Shorewall log messages in the current log file. If the -t option is
           included, the reports are restricted to log messages generated today.

       ipcalc { address mask | address/vlsm }
           Ipcalc displays the network address, broadcast address, network in CIDR notation and netmask
           corresponding to the input[s].

       iprange address1-address2
           Iprange decomposes the specified range of IP addresses into the equivalent list of network/host
           addresses.

       iptrace iptables match expression
           This is a low-level debugging command that causes iptables TRACE log records to be created. See
           iptables(8) for details.

           The iptables match expression must be one or more matches that may appear in both the raw table
           OUTPUT and raw table PREROUTING chains.

           The log message destination is determined by the currently-selected IPv4 logging backend[6].

       list
           list is a synonym for show -- please see below.

       logdrop address
           Causes traffic from the listed addresses to be logged then discarded. Logging occurs at the log level
           specified by the BLACKLIST_LOGLEVEL setting in shorewall.conf[2] (5).

       logwatch [-m] [ refresh-interval ]
           Monitors the log file specified by the LOGFILE option in shorewall.conf[2](5) and produces an audible
           alarm when new Shorewall messages are logged. The -m option causes the MAC address of each packet
           source to be displayed if that information is available. The refresh-interval specifies the time in
           seconds between screen refreshes. You can enter a negative number by preceding the number with "--"
           (e.g., shorewall logwatch -- -30). In this case, when a packet count changes, you will be prompted to
           hit any key to resume screen refreshes.

       logreject address
           Causes traffic from the listed addresses to be logged then rejected. Logging occurs at the log level
           specified by the BLACKLIST_LOGLEVEL setting in shorewall.conf[2] (5).

       ls
           ls is a synonym for show -- please see below.

       noiptrace iptables match expression
           This is a low-level debugging command that cancels a trace started by a preceding iptrace command.

           The iptables match expression must be one given in the iptrace command being canceled.

       open source dest [ protocol [ port ] ]
           Added in Shorewall 4.6.8. This command requires that the firewall be in the started state and that
           DYNAMIC_BLACKLIST=Yes in shorewall.conf (5)[2]. The effect of the command is to temporarily open the
           firewall for connections matching the parameters.

           The source and dest parameters may each be specified as all if you don't wish to restrict the
           connection source or destination respectively. Otherwise, each must contain a host or network address
           or a valid DNS name.

           The protocol may be specified either as a number or as a name listed in /etc/protocols. The port may
           be specified numerically or as a name listed in /etc/services.

           To reverse the effect of a successful open command, use the close command with the same parameters or
           simply restart the firewall.

           Example: To open the firewall for SSH connections to address 192.168.1.1, the command would be:

                   shorewall open all 192.168.1.1 tcp 22

           To reverse that command, use:

                   shorewall close all 192.168.1.1 tcp 22

       reenable{ interface | provider }
           Added in Shorewall 4.6.9. This is equivalent to a disable command followed by an enable command on
           the specified interface or provider.

       refresh  [-n] [-d] [-T] [-i] [-D directory ] [ chain... ]
           All steps performed by restart are performed by refresh with the exception that refresh only
           recreates the chains specified in the command while restart recreates the entire Netfilter ruleset.
           If no chain is given, the static blacklisting chain blacklst is assumed.

           The listed chains are assumed to be in the filter table. You can refresh chains in other tables by
           prefixing the chain name with the table name followed by ":" (e.g., nat:net_dnat). Chain names which
           follow are assumed to be in that table until the end of the list or until an entry in the list names
           another table. Built-in chains such as FORWARD may not be refreshed.

           The -n option was added in Shorewall 4.5.3 causes Shorewall to avoid updating the routing table(s).

           The -d option was added in Shorewall 4.5.3 causes the compiler to run under the Perl debugger.

           The -T option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each
           compiler-generated error and warning message.

           The -i option was added in Shorewall 4.6.0 and causes a warning message to be issued if the current
           line contains alternative input specifications following a semicolon (";"). Such lines will be
           handled incorrectly if INLINE_MATCHES is set to Yes in shorewall.conf[2](5).

           The -D option was added in Shorewall 4.5.3 and causes Shorewall to look in the given directory first
           for configuration files.

           Example:

               shorewall refresh net2fw nat:net_dnat #Refresh the 'net2loc' chain in the filter table and the 'net_dnat' chain in the nat table

           The refresh command has slightly different behavior. When no chain name is given to the refresh
           command, the mangle table is refreshed along with the blacklist chain (if any). This allows you to
           modify /etc/shorewall/tcrulesand install the changes using refresh.

       reject address
           Causes traffic from the listed addresses to be silently rejected.

       reload [-n] [-p] [-d] [-f] [-c] [-T] [-i] [-C] [ directory ]
           This command was re-implemented in Shorewall 5.0.0. The pre-5.0.0 reload command is now called
           remote-restart (see below).

           Reload is similar to shorewall start except that it assumes that the firewall is already started.
           Existing connections are maintained. If a directory is included in the command, Shorewall will look
           in that directory first for configuration files.

           The -n option causes Shorewall to avoid updating the routing table(s).

           The -p option causes the connection tracking table to be flushed; the conntrack utility must be
           installed to use this option.

           The -d option causes the compiler to run under the Perl debugger.

           The -f option suppresses the compilation step and simply reused the compiled script which last
           started/restarted Shorewall, provided that /etc/shorewall and its contents have not been modified
           since the last start/restart.

           The -c option was added in Shorewall 4.4.20 and performs the compilation step unconditionally,
           overriding the AUTOMAKE setting in shorewall.conf[2](5). When both -f and -c are present, the result
           is determined by the option that appears last.

           The -T option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each
           compiler-generated error and warning message.

           The -i option was added in Shorewall 4.6.0 and causes a warning message to be issued if the current
           line contains alternative input specifications following a semicolon (";"). Such lines will be
           handled incorrectly if INLINE_MATCHES is set to Yes in shorewall.conf[2](5).

           The -C option was added in Shorewall 4.6.5 and is only meaningful when AUTOMAKE=Yes in
           shorewall.conf[2](5). If an existing firewall script is used and if that script was the one that
           generated the current running configuration, then the running netfilter configuration will be
           reloaded as is so as to preserve the iptables packet and byte counters.

       remote-start [-s] [-c] [-r root-user-name] [-T] [-i] [ directory ] system
           This command was renamed from load in Shorewall 5.0.0.

           If directory is omitted, the current working directory is assumed. Allows a non-root user to compile
           a shorewall script and install it on a system (provided that the user has root access to the system
           via ssh). The command is equivalent to:

                   /sbin/shorewall compile -e directory directory/firewall &&\
                   scp directory/firewall directory/firewall.conf root@system:/var/lib/shorewall-lite/ &&\
                   ssh root@system '/sbin/shorewall-lite start'

           In other words, the configuration in the specified (or defaulted) directory is compiled to a file
           called firewall in that directory. If compilation succeeds, then firewall is copied to system using
           scp. If the copy succeeds, Shorewall Lite on system is started via ssh.

           If -s is specified and the start command succeeds, then the remote Shorewall-lite configuration is
           saved by executing shorewall-lite save via ssh.

           if -c is included, the command shorewall-lite show capabilities -f >
           /var/lib/shorewall-lite/capabilities is executed via ssh then the generated file is copied to
           directory using scp. This step is performed before the configuration is compiled.

           If -r is included, it specifies that the root user on system is named root-user-name rather than
           "root".

           The -T option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each
           compiler-generated error and warning message.

           The -i option was added in Shorewall 4.6.0 and causes a warning message to be issued if the current
           line contains alternative input specifications following a semicolon (";"). Such lines will be
           handled incorrectly if INLINE_MATCHES is set to Yes in shorewall.conf[2](5).

       remote-reload [-s] [-c] [-r root-user-name] [-T] [-i] [ directory ] system
           This command was added in Shorewall 5.0.0.

           If directory is omitted, the current working directory is assumed. Allows a non-root user to compile
           a shorewall script and install it on a system (provided that the user has root access to the system
           via ssh). The command is equivalent to:

                   /sbin/shorewall compile -e directory directory/firewall &&\
                   scp directory/firewall directory/firewall.conf root@system:/var/lib/shorewall-lite/ &&\
                   ssh root@system '/sbin/shorewall-lite reload'

           In other words, the configuration in the specified (or defaulted) directory is compiled to a file
           called firewall in that directory. If compilation succeeds, then firewall is copied to system using
           scp. If the copy succeeds, Shorewall Lite on system is restarted via ssh.

           If -s is specified and the restart command succeeds, then the remote Shorewall-lite configuration is
           saved by executing shorewall-lite save via ssh.

           if -c is included, the command shorewall-lite show capabilities -f >
           /var/lib/shorewall-lite/capabilities is executed via ssh then the generated file is copied to
           directory using scp. This step is performed before the configuration is compiled.

           If -r is included, it specifies that the root user on system is named root-user-name rather than
           "root".

           The -T option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each
           compiler-generated error and warning message.

           The -i option was added in Shorewall 4.6.0 and causes a warning message to be issued if the current
           line contains alternative input specifications following a semicolon (";"). Such lines will be
           handled incorrectly if INLINE_MATCHES is set to Yes in shorewall.conf[2](5).

       remote-restart [-s] [-c] [-r root-user-name] [-T] [-i] [ directory ] system
           This command was renamed from reload in Shorewall 5.0.0.

           If directory is omitted, the current working directory is assumed. Allows a non-root user to compile
           a shorewall script and install it on a system (provided that the user has root access to the system
           via ssh). The command is equivalent to:

                   /sbin/shorewall compile -e directory directory/firewall &&\
                   scp directory/firewall directory/firewall.conf root@system:/var/lib/shorewall-lite/ &&\
                   ssh root@system '/sbin/shorewall-lite restart'

           In other words, the configuration in the specified (or defaulted) directory is compiled to a file
           called firewall in that directory. If compilation succeeds, then firewall is copied to system using
           scp. If the copy succeeds, Shorewall Lite on system is restarted via ssh.

           If -s is specified and the restart command succeeds, then the remote Shorewall-lite configuration is
           saved by executing shorewall-lite save via ssh.

           if -c is included, the command shorewall-lite show capabilities -f >
           /var/lib/shorewall-lite/capabilities is executed via ssh then the generated file is copied to
           directory using scp. This step is performed before the configuration is compiled.

           If -r is included, it specifies that the root user on system is named root-user-name rather than
           "root".

           The -T option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each
           compiler-generated error and warning message.

           The -i option was added in Shorewall 4.6.0 and causes a warning message to be issued if the current
           line contains alternative input specifications following a semicolon (";"). Such lines will be
           handled incorrectly if INLINE_MATCHES is set to Yes in shorewall.conf[2](5).

       reset [chain, ...]
           Resets the packet and byte counters in the specified chain(s). If no chain is specified, all the
           packet and byte counters in the firewall are reset.

           Beginning with Shorewall 5.0.0, chain may be composed of both a table name and a chain name separated
           by a colon (e.g., mangle:PREROUTING). Chain names following that don't include a table name are
           assumed to be in that same table. If no table name is given in the command, the filter table is
           assumed.

       restart [-n] [-p] [-d] [-f] [-c] [-T] [-i] [-C] [ directory ]
           Beginning with Shorewall 5.0.0, this command performs a true restart. The firewall is completely
           stopped as if a stop command had been issued then it is started again.

           If a directory is included in the command, Shorewall will look in that directory first for
           configuration files.

           The -n option causes Shorewall to avoid updating the routing table(s).

           The -p option causes the connection tracking table to be flushed; the conntrack utility must be
           installed to use this option.

           The -d option causes the compiler to run under the Perl debugger.

           The -f option suppresses the compilation step and simply reused the compiled script which last
           started/restarted Shorewall, provided that /etc/shorewall and its contents have not been modified
           since the last start/restart.

           The -c option was added in Shorewall 4.4.20 and performs the compilation step unconditionally,
           overriding the AUTOMAKE setting in shorewall.conf[2](5). When both -f and -c are present, the result
           is determined by the option that appears last.

           The -T option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each
           compiler-generated error and warning message.

           The -i option was added in Shorewall 4.6.0 and causes a warning message to be issued if the current
           line contains alternative input specifications following a semicolon (";"). Such lines will be
           handled incorrectly if INLINE_MATCHES is set to Yes in shorewall.conf[2](5).

           The -C option was added in Shorewall 4.6.5 and is only meaningful when AUTOMAKE=Yes in
           shorewall.conf[2](5). If an existing firewall script is used and if that script was the one that
           generated the current running configuration, then the running netfilter configuration will be
           reloaded as is so as to preserve the iptables packet and byte counters.

       restore  [-n] [-p] [-C] [ filename ]
           Restore Shorewall to a state saved using the shorewall save command. Existing connections are
           maintained. The filename names a restore file in /var/lib/shorewall created using shorewall save; if
           no filename is given then Shorewall will be restored from the file specified by the RESTOREFILE
           option in shorewall.conf[2](5).

               Caution
               If your iptables ruleset depends on variables that are detected at run-time, either in your
               params file or by Shorewall-generated code, restore will use the values that were current when
               the ruleset was saved, which may be different from the current values.
           The -n option causes Shorewall to avoid updating the routing table(s).

           The -p option, added in Shorewall 4.6.5, causes the connection tracking table to be flushed; the
           conntrack utility must be installed to use this option.

           The -C option was added in Shorewall 4.6.5. If the -C option was specified during shorewall save,
           then the counters saved by that operation will be restored.

       run command [ parameter ... ]
           Added in Shorewall 4.6.3. Executes command in the context of the generated script passing the
           supplied parameters. Normally, the command will be a function declared in lib.private.

           Before executing the command, the script will detect the configuration, setting all SW_* variables
           and will run your init extension script with $COMMAND = 'run'.

           If there are files in the CONFIG_PATH that were modified after the current firewall script was
           generated, the following warning message is issued:
               WARNING: /var/lib/shorewall/firewall is not up to
                           date

       safe-reload [-d] [-p] [-t timeout ] [ directory ]
           Added in Shorewall 5.0.0, this command performs the same function as did safe_restart in earlier
           releases.

           Only allowed if Shorewall is running. The current configuration is saved in
           /var/lib/shorewall/safe-reload (see the save command below) then a shorewall reload is done. You will
           then be prompted asking if you want to accept the new configuration or not. If you answer "n" or if
           you fail to answer within 60 seconds (such as when your new configuration has disabled communication
           with your terminal), the configuration is restored from the saved configuration. If a directory is
           given, then Shorewall will look in that directory first when opening configuration files.

           Beginning with Shorewall 4.5.0, you may specify a different timeout value using the -t option. The
           numeric timeout may optionally be followed by an s, m or h suffix (e.g., 5m) to specify seconds,
           minutes or hours respectively. If the suffix is omitted, seconds is assumed.

       safe-restart [-d] [-p] [-t timeout ] [ directory ]
           Only allowed if Shorewall is running. The current configuration is saved in
           /var/lib/shorewall/safe-restart (see the save command below) then a shorewall restart is done. You
           will then be prompted asking if you want to accept the new configuration or not. If you answer "n" or
           if you fail to answer within 60 seconds (such as when your new configuration has disabled
           communication with your terminal), the configuration is restored from the saved configuration. If a
           directory is given, then Shorewall will look in that directory first when opening configuration
           files.

           Beginning with Shorewall 4.5.0, you may specify a different timeout value using the -t option. The
           numeric timeout may optionally be followed by an s, m or h suffix (e.g., 5m) to specify seconds,
           minutes or hours respectively. If the suffix is omitted, seconds is assumed.

       safe-start [-d] [-p] [-ttimeout ] [ directory ]
           Shorewall is started normally. You will then be prompted asking if everything went all right. If you
           answer "n" or if you fail to answer within 60 seconds (such as when your new configuration has
           disabled communication with your terminal), a shorewall clear is performed for you. If a directory is
           given, then Shorewall will look in that directory first when opening configuration files.

           Beginning with Shorewall 4.5.0, you may specify a different timeout value using the -t option. The
           numeric timeout may optionally be followed by an s, m or h suffix (e.g., 5m) to specify seconds,
           minutes or hours respectively. If the suffix is omitted, seconds is assumed.

       save  [-C] [ filename ]
           The dynamic blacklist is stored in /var/lib/shorewall/save. The state of the firewall is stored in
           /var/lib/shorewall/filename for use by the shorewall restore and shorewall -f start commands. If
           filename is not given then the state is saved in the file specified by the RESTOREFILE option in
           shorewall.conf[2](5).

           The -C option, added in Shorewall 4.6.5, causes the iptables packet and byte counters to be saved
           along with the chains and rules.

       savesets
           Added in shorewall 4.6.8. Performs the same action as the stop command with respect to saving ipsets
           (see the SAVE_IPSETS option in shorewall.conf[2] (5)). This command may be used to proactively save
           your ipset contents in the event that a system failure occurs prior to issuing a stop command.

       show
           The show command can have a number of different arguments:

           actions
               Produces a report about the available actions (built-in, standard and user-defined).

           bl|blacklists [-x]
               Added in Shorewall 4.6.2. Displays the dynamic chain along with any chains produced by entries in
               shorewall-blrules(5). The -x option is passed directly through to iptables and causes actual
               packet and byte counts to be displayed. Without this option, those counts are abbreviated.

           [-f] capabilities
               Displays your kernel/iptables capabilities. The -f option causes the display to be formatted as a
               capabilities file for use with compile -e.

           [-b] [-x] [-l] [-t {filter|mangle|nat|raw|rawpost}] [ chain... ]
               The rules in each chain are displayed using the iptables -Lchain-n -v command. If no chain is
               given, all of the chains in the filter table are displayed. The -x option is passed directly
               through to iptables and causes actual packet and byte counts to be displayed. Without this
               option, those counts are abbreviated. The -t option specifies the Netfilter table to display. The
               default is filter.

               The -b ('brief') option causes rules which have not been used (i.e. which have zero packet and
               byte counts) to be omitted from the output. Chains with no rules displayed are also omitted from
               the output.

               The -l option causes the rule number for each Netfilter rule to be displayed.

               If the -t option and the chain keyword are both omitted and any of the listed chains do not
               exist, a usage message is displayed.

           classifiers|filters
               Displays information about the packet classifiers defined on the system as a result of traffic
               shaping configuration.

           config
               Displays distribution-specific defaults.

           connections [filter_parameter ...]
               Displays the IP connections currently being tracked by the firewall.

               If the conntrack utility is installed, beginning with Shorewall 4.6.11 the set of connections
               displayed can be limited by including conntrack filter parameters (-p , -s, --dport, etc). See
               conntrack(8) for details.

           event event
               Added in Shorewall 4.5.19. Displays the named event.

           events
               Added in Shorewall 4.5.19. Displays all events.

           ip
               Displays the system's IPv4 configuration.

           ipa
               Added in Shorewall 4.4.17. Displays the per-IP accounting counters (shorewall-accounting[7] (5)).

           [-m] log
               Displays the last 20 Shorewall messages from the log file specified by the LOGFILE option in
               shorewall.conf[2](5). The -m option causes the MAC address of each packet source to be displayed
               if that information is available.

           macros
               Displays information about each macro defined on the firewall system.

           macro macro
               Added in Shorewall 4.4.6. Displays the file that implements the specified macro (usually
               /usr/share/shorewall/macro.macro).

           [-x] mangle
               Displays the Netfilter mangle table using the command iptables -t mangle -L -n -v. The -x option
               is passed directly through to iptables and causes actual packet and byte counts to be displayed.
               Without this option, those counts are abbreviated.

           marks
               Added in Shorewall 4.4.26. Displays the various fields in packet marks giving the min and max
               value (in both decimal and hex) and the applicable mask (in hex).

           [-x] nat
               Displays the Netfilter nat table using the command iptables -t nat -L -n -v. The -x option is
               passed directly through to iptables and causes actual packet and byte counts to be displayed.
               Without this option, those counts are abbreviated.

           opens
               Added in Shorewall 4.5.8. Displays the iptables rules in the 'dynamic' chain created through use
               of the open command..

           policies
               Added in Shorewall 4.4.4. Displays the applicable policy between each pair of zones. Note that
               implicit intrazone ACCEPT policies are not displayed for zones associated with a single network
               where that network doesn't specify routeback.

           [-c] routing
               Displays the system's IPv4 routing configuration. The -c option causes the route cache to be
               displayed along with the other routing information.

           [-x] raw
               Displays the Netfilter raw table using the command iptables -t raw -L -n -v. The -x option is
               passed directly through to iptables and causes actual packet and byte counts to be displayed.
               Without this option, those counts are abbreviated.

           tc
               Displays information about queuing disciplines, classes and filters.

           zones
               Displays the current composition of the Shorewall zones on the system.

       start  [-n] [-p] [-d] [-f] [-c] [-T] [-i] [-C] [ directory ]
           Start shorewall. Existing connections through shorewall managed interfaces are untouched. New
           connections will be allowed only if they are allowed by the firewall rules or policies. If a
           directory is included in the command, Shorewall will look in that directory first for configuration
           files. If -f is specified, the saved configuration specified by the RESTOREFILE option in
           shorewall.conf[2](5) will be restored if that saved configuration exists and has been modified more
           recently than the files in /etc/shorewall. When -f is given, a directory may not be specified.

           Update: In Shorewall 4.4.20, a new LEGACY_FASTSTART option was added to shorewall.conf[2](5). When
           LEGACY_FASTSTART=No, the modification times of files in /etc/shorewall are compared with that of
           /var/lib/shorewall/firewall (the compiled script that last started/restarted the firewall).

           The -n option causes Shorewall to avoid updating the routing table(s).

           The -p option causes the connection tracking table to be flushed; the conntrack utility must be
           installed to use this option.

           The -c option was added in Shorewall 4.4.20 and performs the compilation step unconditionally,
           overriding the AUTOMAKE setting in shorewall.conf[2](5). When both -f and -care present, the result
           is determined by the option that appears last.

           The -T option was added in Shorewall 4.5.3 and causes a Perl stack trace to be included with each
           compiler-generated error and warning message.

           The -i option was added in Shorewall 4.6.0 and causes a warning message to be issued if the current
           line contains alternative input specifications following a semicolon (";"). Such lines will be
           handled incorrectly if INLINE_MATCHES is set to Yes in shorewall.conf(5)[2].

           The -C option was added in Shorewall 4.6.5 and is only meaningful when the -f option is also
           specified. If the previously-saved configuration is restored, and if the -C option was also specified
           in the save command, then the packet and byte counters will be restored.

       stop [-f]
           Stops the firewall. All existing connections, except those listed in shorewall-routestopped[8](5) or
           permitted by the ADMINISABSENTMINDED option in shorewall.conf[2](5), are taken down. The only new
           traffic permitted through the firewall is from systems listed in shorewall-routestopped[8](5) or by
           ADMINISABSENTMINDED.

           If -f is given, the command will be processed by the compiled script that executed the last
           successful start, restart or refresh command if that script exists.

       status [-i]
           Produces a short report about the state of the Shorewall-configured firewall.

           The -i option was added in Shorewall 4.6.2 and causes the status of each optional or provider
           interface to be displayed.

       try directory [ timeout ]
           If Shorewall is started then the firewall state is saved to a temporary saved configuration
           (/var/lib/shorewall/.try). Next, if Shorewall is currently started then a restart command is issued
           using the specified configuration directory; otherwise, a start command is performed using the
           specified configuration directory. if an error occurs during the compilation phase of the restart or
           start, the command terminates without changing the Shorewall state. If an error occurs during the
           restart phase, then a shorewall restore is performed using the saved configuration. If an error
           occurs during the start phase, then Shorewall is cleared. If the start/restart succeeds and a timeout
           is specified then a clear or restore is performed after timeout seconds.

           Beginning with Shorewall 4.5.0, the numeric timeout may optionally be followed by an s, m or h suffix
           (e.g., 5m) to specify seconds, minutes or hours respectively. If the suffix is omitted, seconds is
           assumed.

       update  [-d] [-r] [-T] [-a] [-i] [-A] [ directory ]
           Added in Shorewall 4.4.21 and causes the compiler to update /etc/shorewall/shorewall.conf then
           validate the configuration. The update will add options not present in the old file with their
           default values, and will move deprecated options with non-defaults to a deprecated options section at
           the bottom of the file. Your existing shorewall.conf file is renamed shorewall.conf.bak.

           The command was extended over the years with a set of options that caused additional configuration
           updates.

           •   Convert an existing blacklist file into an equivalent blrules file.

           •   Convert an existing routestopped file into an equivalent stoppedrules file.

           •   Convert existing tcrules and tos files into an equivalent mangle file.

           •   Convert an existing notrack file into an equivalent conntrack file.

           •   Convert FORMAT, SECTION and COMMENT entries into ?FORMAT, ?SECTION and ?COMMENT directives.

           In each case, the old file is renamed with a .bak suffix.

           In Shorewall 5.0.0, the options were eliminated and the update command performs all of the updates
           described above.

               Important
               There are some notable restrictions with the update command:

                1. Converted rules will be appended to the existing file; if there is no existing file in the
                   CONFIG_PATH, one will be created in the directory specified in the command or in the first
                   entry in the CONFIG_PATH (normally /etc/shorewall) otherwise.

                2. Existing comments in the file being converted will not be transferred to the output file.

                3. INCLUDEd files will be expanded inline in the output file.

                4. Columns in the output file will be separated by a single tab character; there is no attempt
                   made to otherwise align the columns.
           The -a option causes the updated shorewall.conf file to be annotated with documentation.

           The -i option was added in Shorewall 4.6.0 and causes a warning message to be issued if the current
           line contains alternative input specifications following a semicolon (";"). Such lines will be
           handled incorrectly if INLINE_MATCHES is set to Yes in shorewall.conf[2](5).

           The -A option is included for compatibility with Shorewall 4.6 and is equivalent to specifying the -i
           option.

           For a description of the other options, see the check command above.

       version [-a]
           Displays Shorewall's version. The -a option is included for compatibility with earlier Shorewall
           releases and is ignored.

EXIT STATUS

       In general, when a command succeeds, status 0 is returned; when the command fails, a non-zero status is
       returned.

       The status command returns exit status as follows:

       0 - Firewall is started.

       3 - Firewall is stopped or cleared

       4 - Unknown state; usually means that the firewall has never been started.

FILES

       /etc/shorewall/

SEE ALSO

       http://www.shorewall.net/starting_and_stopping_shorewall.htm[9]

       shorewall-accounting(5), shorewall-actions(5), shorewall-blacklist(5), shorewall-hosts(5),
       shorewall_interfaces(5), shorewall-ipsets(5), shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5),
       shorewall-netmap(5), shorewall-params(5), shorewall-policy(5), shorewall-providers(5),
       shorewall-proxyarp(5), shorewall-rtrules(5), shorewall-routestopped(5), shorewall-rules(5),
       shorewall.conf(5), shorewall-secmarks(5), shorewall-tcclasses(5), shorewall-tcdevices(5),
       shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5), shorewall-zones(5)

NOTES

        1. http://www.shorewall.net/starting_and_stopping_shorewall.htm#Trace
           http://www.shorewall.net/starting_and_stopping_shorewall.htm#Trace

        2. shorewall.conf
           http://www.shorewall.net/manpages/shorewall.conf.html

        3. shorewall-interfaces
           http://www.shorewall.net/manpages/shorewall-interfaces.html

        4. shorewall-zones
           http://www.shorewall.net/manpages/shorewall-zones.html

        5. shorewall-routes
           http://www.shorewall.net/manpages/shorewall-routes.html

        6. logging backend
           http://www.shorewall.net/shorewall_logging.html#Backends

        7. shorewall-accounting
           http://www.shorewall.net/manpages/shorewall-accounting.html

        8. shorewall-routestopped
           http://www.shorewall.net/manpages/shorewall-routestopped.html

        9. http://www.shorewall.net/starting_and_stopping_shorewall.htm
           http://www.shorewall.net/starting_and_stopping_shorewall.htm