Ten Minute Firewall

    Date08 Oct 2002
    4052
    Posted ByAnthony Pell
    Each major version of Linux has had a different firewalling software suite. 2.0 kernels had ipfwadm, 2.2 had ipchains, and 2.4 has iptables. (2.4 can support ipchains-style rules if you load the ipchains module.) Each offers great . . . Each major version of Linux has had a different firewalling software suite. 2.0 kernels had ipfwadm, 2.2 had ipchains, and 2.4 has iptables. (2.4 can support ipchains-style rules if you load the ipchains module.) Each offers great improvements from its predecessors. Iptables, aka Netfilter[1] offers extreemly powerful network controls, and can route packets to and from different machines and ports in ways beyond belief and understanding.

    For the last four months I've been living in a temporary apartment while our house was being remodeled and my servers have been in storage. For four months our daily computing lives have been reduced to two laptops directly attached to the Internet via DSL.

    This wasn't much of a problem for my machine, since it runs Linux and has a very paranoid set of iptables rulesets. My fiancee's, however, runs Windows 98, with enough vulnerabilities to fill an encyclopedia. So now that we're settled down, it's time to set up our LAN and get a proper firewall in place.

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