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I'm looking to use Linux (Ubuntu 9.10) as a network bridge between two subnets. I can configure iptables to permit all traffic on eth0 (subnet 1) to pass to eth1 ...
  1. 02-25-2010 #1
    DougLegge
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    iptables

    I'm looking to use Linux (Ubuntu 9.10) as a network bridge between two subnets. I can configure iptables to permit all traffic on eth0 (subnet 1) to pass to eth1 (subnet 2) but before transmitting that traffic I want to perform further analysis. Is it possible within iptables or via a third-party product such a pyroman, to write a "hook" that then directs that traffic to another application installed on the same host?

    thanks

    Doug
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    IMSS, University of Reading, UK
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  2. 02-26-2010 #2
    guus.leeuw.jr
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    have a look at snort-inline on Google. You'll find others too that can do this. iptables is not going to look beyond the IP header of a packet: It's a firewall, so it's got no business with the data inside the packet.

    Guus
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  3. 02-26-2010 #3
    DougLegge
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    iptables

    Guus,

    Thats really helpful thanks for that. I will have a look at that

    Doug
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