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FireHOL is a language (and a program to run it) to build secure, stateful firewalls from easy to understand, human-readable configuration files. The configuration stays readable even for very complex setups. In the background it interfaces with iptables (IPv4/IPv6).


Install fireholAUR or firehol-gitAUR.


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Reason: stub (Discuss in Talk:FireHOL#)

The configuration file is /etc/firehol/firehol.conf.

A good way to start learning its scripting declarations is by copying an Firehol example configuration.

The configuration file is bash file and has 3 parts:

  • helper
  • interface
  • router

Try, Run and Enable

You can test the configuration file's correctness by issuing:

# firehol try


# firehol nofast try

If the configuration is working, start/enable the firehol.service.