Published at LXer:

Firewall Builder is a firewall configuration and management GUI that supports configuring a wide range of firewalls from a single application. Supported firewalls include Linux iptables, BSD pf, Cisco ASA/PIX, Cisco router access lists and many more. In this tutorial we are going to cover how to use Firewall Builder to configure a NAT rule that translates both the source and destination IP addresses of the original packet. This type of NAT configuration can be useful in a variety of network configurations.

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