iptables salt formula

Iptables is used to set up, maintain, and inspect the tables of IPv4 packet filter rules in the Linux kernel. Several different tables may be defined. Each table contains a number of built-in chains and may also contain user-defined chains. Each chain is a list of rules which can match a set of packets. Each rule specifies what to do with a packet that matches. This is called a target, which may be a jump to a user-defined chain in the same table.

This version of a formula guarantees that manually added rules or rules which has been added in runtime would be removed.

In order to ensure architecture, proper epoch value should be specified. Refer to an example.

Sample pillars

parameters:
  iptables:
    schema:
      epoch: 1
    service:
      v4:
        enabled: true
        persistent_config: /etc/iptables/rules.v4
        modules:
        - nf_conntrack_ftp
        - nf_conntrack_pptp
      v6:
        enabled: false
        persistent_config: /etc/iptables/rules.v6
        modules:
        - nf_conntrack_ipv6
    defaults:
      v4:
        metadata_rules: false
        policy: ACCEPT
        ruleset:
          action: ACCEPT
          params: ""
          rule: ""
      v6:
        metadata_rules: false
        policy: DROP
        ruleset:
          action: ACCEPT
          params: ""
          rule: ""
    tables:
      v4:
        filter:
          chains:
            INPUT:
              ruleset:
                5:
                  action: log_drop
                10:
                  rule: -s 192.168.0.0/24 -p tcp
            log_drop:
              policy: DROP
              ruleset:
                10:
                  action: LOG
                  comment: "Log my packets"
        nat:
          chains:
            OUTPUT: {}
            PREROUTING: {}
            POSTROUTING:
              policy: ACCEPT
              ruleset:
                10:
                  rule: -s 192.168.0.0/24 -p tcp -o lo
                  action: SNAT
                  params: --to-source=127.0.0.1

Read more

• http://docs.saltstack.com/en/latest/ref/states/all/salt.states.iptables.html
• https://help.ubuntu.com/community/IptablesHowTo
• http://wiki.centos.org/HowTos/Network/IPTables

Documentation and Bugs

To learn how to install and update salt-formulas, consult the documentation available online at:

http://salt-formulas.readthedocs.io/

In the unfortunate event that bugs are discovered, they should be reported to the appropriate issue tracker. Use Github issue tracker for specific salt formula:

https://github.com/salt-formulas/salt-formula-iptables/issues

Developers wishing to work on the salt-formulas projects should always base their work on master branch and submit pull request against specific formula.

https://github.com/salt-formulas/salt-formula-iptables