Jump to: navigation, search

Quantum-iptables-manager

Handling Iptables Manager

Abstract

The idea behind this blueprint is create a python iptables module implementing a generic iptables abstraction, this will be useful for every plugin based on iptables.

Summary

This module works with ipv4 and ipv6, supporting use of stateless or stateful firewalls.

Proposed Quantum Module Operations

Setting up the module

from quantum.plugins.agent.linux import iptables_manager
iptables = iptables_manager.IptablesManager()

You can use an alternate configuration file calling the IptablesManager using the config_file='path'

Adding a filter chain

iptables.ipv4['filter'].add_chain('iptables-ipv4-filter')


Adding rule to a filter chain

#!highlight python
iptables.ipv4['filter'].add_rule('iptables-ipv4-filter', '-s 192.168.0.3 -j DROP')


Removing rule from a filter chain

iptables.ipv4['filter'].remove_rule('iptables-ipv4-filter', '-s 192.168.0.3 -j DROP')


Empty a chain

iptables.ipv4['filter'].empty_chain('iptables-ipv4-filter')


Removing a filter chain

iptables.ipv4['filter'].remove_chain('iptables-ipv4-filter')


Adding a nat chain

iptables.ipv4['filter'].add_chain('iptables-ipv4-nat')


Adding rule to a nat chain

iptables.ipv4['nat'].add_rule('PREROUTING', '-d 192.168.0.3 -j iptables-ipv4-nat', wrap=False)
iptables.ipv4['nat'].add_rule('iptables-ipv4-nat', '-i eth0 -p tcp -d 192.168.0.3 --dport 8080 -j REDIRECT --to-port 80')


Removing rule from a nat chain

iptables.ipv4['nat'].remove_rule('iptables-ipv4-nat', '-i eth0 -p tcp -d 192.168.0.3 --dport 8080 -j REDIRECT --to-port 80')
iptables.ipv4['nat'].remove_rule('PREROUTING', '-d 192.168.0.3 -j iptables-ipv4-nat', wrap=False)


Empty a chain

iptables.ipv4['filter'].empty_chain('iptables-ipv4-nat')


Removing a filter chain

iptables.ipv4['filter'].remove_chain('iptables-ipv4-nat')


Applying iptables rules

iptables.apply()