Provided by: bro_2.5.5-1build2_amd64 bug


       bro - passive network traffic analyzer


       bro  [options] [file ...]


       Bro is primarily a security monitor that inspects all traffic on a link in depth for signs
       of suspicious activity. More generally, however, Bro supports  a  wide  range  of  traffic
       analysis tasks even outside of the security domain, including performance measurements and
       helping with trouble-shooting.

       Bro comes with built-in functionality  for  a  range  of  analysis  and  detection  tasks,
       including  detecting  malware  by interfacing to external registries, reporting vulnerable
       versions of software seen on the network, identifying popular web applications,  detecting
       SSH brute-forcing, validating SSL certificate chains, among others.


       <file> policy file, or read stdin

       -a, --parse-only
              exit immediately after parsing scripts

       -b, --bare-mode
              don't load scripts from the base/ directory

       -d, --debug-policy
              activate policy file debugging

       -e, --exec <bro code>
              augment loaded policies by given code

       -f, --filter <filter>
              tcpdump filter

       -g, --dump-config
              dump current config into .state dir

       -h, --help|-?
              command line help

       -i, --iface <interface>
              read from given interface

       -p, --prefix <prefix>
              add given prefix to policy file resolution

       -r, --readfile <readfile>
              read from given tcpdump file

       -s, --rulefile <rulefile>
              read rules from given file

       -t, --tracefile <tracefile>
              activate execution tracing

       -w, --writefile <writefile>
              write to given tcpdump file

       -v, --version
              print version and exit

       -x, --print-state <file.bst>
              print contents of state file

       -C, --no-checksums
              ignore checksums

       -F, --force-dns
              force DNS

       -I, --print-id <ID name>
              print out given ID

       -N, --print-plugins
              print available plugins and exit (-NN for verbose)

       -P, --prime-dns
              prime DNS

       -Q, --time
              print execution time summary to stderr

       -R, --replay <events.bst>
              replay events

       -S, --debug-rules
              enable rule debugging

       -T, --re-level <level>
              set 'RE_level' for rules

       -U, --status-file <file>
              Record process status in file

       -W, --watchdog
              activate watchdog timer

       -X, --broxygen <cfgfile>
              generate documentation based on config file

              enable pseudo-realtime for performance evaluation (default 1)

       --load-seeds <file>
              load seeds from given file

       --save-seeds <file>
              save seeds to given file

       The following option is available only when Bro is built with the --enable-debug configure

       -B, --debug <dbgstreams>
              Enable debugging output for selected streams ('-B help' for help)

       The following options are available only when Bro is built with  gperftools  support  (use
       the --enable-perftools and --enable-perftools-debug configure options):

       -m, --mem-leaks
              show leaks

       -M, --mem-profile
              record heap


              file search path

              plugin search path

              plugins to always activate

              prefix list

              disable DNS lookups

              file to load seeds from

              ASCII log file extension

              Output file for script execution statistics

              Disable Broxygen documentation support


       bro was written by The Bro Project <>.