What is required to set up a router/firewall? All Things Unix FAQ

This Section

What is required to share an Internet connection using Linux?
Configure wireless wlan-ng drivers with PCI-PCMCIA adapter and a DWL-650
How do I setup my Linux box as my router?
How can I set up Roaring Penguin PPPoE?
What is required to set up a router/firewall?
What is ipfwadm?
What is ipchains?
What is iptables?
What's a packet filter?
Why would I want to Packet Filter?
How do I assign an IP address to an interface?
How do I change/set the MTU of an interface?
How do I set up IPChains?
How do I set up IPTables?
How can I configure my wireless card in Linux?
I have other questions about SSH that aren't answered here.

What is required to set up a router/firewall?

To set up Linux as a router you will need to configure either ipfwadm (Kernel 2.0.x), ipchains (Kernel 2.2.x), or iptables (Kernel 2.4.x) to perform NAT or IP Masquerading.

Information on IP Masquarding using ipfwadm and ipchains can be found here. Netfilter/iptables NAT documentation can be found here.

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by howe81

All FAQs » All Things Unix FAQ » 2.1 Networking

What is required to set up a router/firewall?