69 lines
2.0 KiB
Markdown
69 lines
2.0 KiB
Markdown
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# Ansible Role: Firewall (iptables)
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[](https://travis-ci.org/geerlingguy/ansible-role-firewall)
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Installs a simple iptables-based firewall for RHEL/CentOS or Debian/Ubunty systems.
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This firewall aims for simplicity over complexity, and only opens a few specific ports for incoming traffic (configurable through Ansible variables). If you have a rudimentary knowledge of `iptables` and/or firewalls in general, this role should be a good starting point for a secure system firewall.
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After the role is run, a `firewall` init service will be available on the server. You can use `service firewall [start|stop|restart|status]` to control the firewall.
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## Requirements
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None.
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## Role Variables
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Available variables are listed below, along with default values (see `vars/main.yml`):
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firewall_allowed_tcp_ports:
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- "22"
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- "80"
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...
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firewall_allowed_udp_ports: []
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A list of TCP or UDP ports (respectively) to open to incoming traffic.
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firewall_forwarded_tcp_ports:
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- { src: "22", dest: "2222" }
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- { src: "80", dest: "8080" }
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firewall_forwarded_udp_ports: []
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Forward `src` port to `dest` port, either TCP or UDP (respectively).
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firewall_additional_rules: []
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Any additional (custom) rules to be added to the firewall (in the same format you would add them via command line, e.g. `iptables [rule]`).
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## Dependencies
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None.
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## Example Playbook
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- hosts: server
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vars_files:
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- vars/main.yml
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roles:
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- { role: geerlingguy.firewall }
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*Inside `vars/main.yml`*:
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firewall_allowed_tcp_ports:
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- "22"
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- "25"
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- "80"
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## TODO
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- Make outgoing ports more configurable.
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- Make other firewall features (like logging) configurable.
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## License
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MIT / BSD
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## Author Information
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This role was created in 2014 by [Jeff Geerling](http://jeffgeerling.com/), author of [Ansible for DevOps](http://ansiblefordevops.com/).
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