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fwb_ipf(1)                     Firewall Builder                     fwb_ipf(1)


NAME

       fwb_ipf - Policy compiler for ipfilter


SYNOPSIS

       fwb_ipf [-vVx] [-d wdir] [-o output.fw] [-i] -f data_file.xml
       object_name


DESCRIPTION

       fwb_ipf is a firewall policy compiler component of Firewall Builder
       (see fwbuilder(1)). This compiler generates code for ipfilter. Compiler
       reads objects definitions and firewall description from the data file
       specified with "-f" option and generates ipfilter configuration files
       and firewall activation script.

       All generated files have names that start with the name of the firewall
       object. Firewall activation script has extension ".fw" and is simple
       shell script that flushes current policy, loads new filter and nat
       rules and then activates ipfilter.  IPFilter configuration file name
       starts with the name of the firewall object, plus "-ipf.conf".  NAT
       configuration file name also starts with the name of the firewall
       object, plus "-nat.conf". For example, if firewall object has name
       "myfirewall", then compiler will create three files: "myfirewall.fw",
       "myfirewall-pf.conf", "myfirewall-nat.conf".

       The data file and the name of the firewall objects must be specified on
       the command line. Other command line parameters are optional.


OPTIONS

       -f FILE
              Specify the name of the data file to be processed.

       -o output.fw
              Specify output file name

       -d wdir
              Specify  working  directory.  Compiler  creates  firewall
              activation script and ipfilter configuration files in this
              directory.  If this parameter is missing, then all files will be
              placed in the current working directory.

       -v     Be verbose: compiler prints diagnostic messages when it works.

       -V     Print version number and quit.

       -i     When this option is present, the last argument on the command
              line is supposed to be firewall object ID rather than its name

       -x     Generate debugging information while working. This option is
              intended for debugging only and may produce lots of cryptic
              messages.


NOTES

       Support for ipf returned in version 1.0.1 of Firewall Builder

       Supported features:

       o      both ipf.conf and nat.conf files are generated

       o      negation in policy rules

       o      stateful inspection in individual rule can be turned off in rule
              options dialog. By default compiler adds "keep state" or
              "modulate state" to each rule with action 'pass'

       o      rule options dialog provides a choice of icmp or tcp rst replies
              for rules with action "Reject"

       o      compiler adds flag "allow-opts" if match on ip options is needed

       o      compiler can generate rules matching on TCP flags

       o      compiler can generate script adding ip aliases for NAT rules
              using addresses that do not belong to any interface of the
              firewall

       o      compiler always adds rule "block quick all" at the very bottom
              of the script to ensure "block all by default" policy even if
              the policy is empty.

       o      Address ranges in both policy and NAT

       Features that are not supported (yet)

       o      negation in NAT

       o      custom services

       Features that won't be supported (at least not anytime soon)

       o      policy routing


URL

       Firewall Builder home page is located at the following URL:
       http://www.fwbuilder.org/


BUGS

       Please report bugs using bug tracking system on SourceForge:

       http://sourceforge.net/tracker/?group_id=5314&atid=105314


SEE ALSO

       fwbuilder(1), fwb_ipt(1), fwb_pf(1)

FWB                                                                 fwb_ipf(1)

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