NAME

       exclusion - Exclude a set of hosts from a definition in a shorewall6 configuration file.

SYNOPSIS

       !address-or-range[,address-or-range]...

       !zone-name[,zone-name]...

DESCRIPTION

       Exclusion is used when you wish to exclude one or more addresses from a definition. An exclamation point
       is followed by a comma-separated list of addresses. The addresses may be single host addresses (e.g.,
       fe80::2a0:ccff:fedb:31c4) or they may be network addresses in CIDR format (e.g.,
       fe80::2a0:ccff:fedb:31c4/64). If your kernel and ip6tables include iprange support, you may also specify
       ranges of ip addresses of the form lowaddress-highaddress

       No embedded white-space is allowed.

       Exclusion can appear after a list of addresses and/or address ranges. In that case, the final list of
       address is formed by taking the first list and then removing the addresses defined in the exclusion.

       Beginning in Shorewall 4.4.13, the second form of exclusion is allowed after all and any in the SOURCE
       and DEST columns of /etc/shorewall/rules. It allows you to omit arbitrary zones from the list generated
       by those key words.

           Warning

           If you omit a sub-zone and there is an explicit or explicit CONTINUE policy, a connection to/from
           that zone can still be matched by the rule generated for a parent zone.

           For example:

           /etc/shorewall6/zones:

               #ZONE          TYPE
               z1             ip
               z2:z1          ip
               ...

           /etc/shorewall6/policy:

               #SOURCE         DEST          POLICY
               z1              net           CONTINUE
               z2              net           REJECT

           /etc/shorewall6/rules:

               #ACTION         SOURCE        DEST        PROTO         DEST
               #                                                       PORT(S)
               ACCEPT          all!z2        net         tcp           22

           In this case, SSH connections from z2 to net will be accepted by the generated z1 to net ACCEPT rule.

FILES

       /etc/shorewall6/hosts

       /etc/shorewall6/masq

       /etc/shorewall6/rules

       /etc/shorewall6/tcrules

SEE ALSO

       shorewall6(8), shorewall6-accounting(5), shorewall6-actions(5), shorewall6-blacklist(5),
       shorewall6-hosts(5), shorewall6-interfaces(5), shorewall6-maclist(5),
       shorewall6-netmap(5),shorewall6-params(5), shorewall6-policy(5), shorewall6-providers(5),
       shorewall6-rtrules(5), shorewall6-routestopped(5), shorewall6-rules(5), shorewall6.conf(5),
       shorewall6-secmarks(5), shorewall6-tcclasses(5), shorewall6-tcdevices(5), shorewall6-tcrules(5),
       shorewall6-tos(5), shorewall6-tunnels(5), shorewall-zones(5)

[FIXME: source]                                    01/30/2014                             SHOREWALL6-EXCLUSIO(5)