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7.8. Additional Resources

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There are several aspects to firewalls and the Linux Netfilter subsystem that could not be covered in this chapter. For more information, refer to the following resources.

7.8.1. Installed Documentation

  • The Reference Guide has a comprehensive chapter on iptables, including definitions for all command options.
  • The iptables man page contains a brief summary of the various options, as well.
  • A list of common services and their port numbers can be found in Appendix C, Common Ports and in /etc/services.
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