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IPTables

Discussion in 'Linux and Unix' started by j4c, Jan 15, 2013.

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  1. j4c

    j4c Thread Starter

    Joined:
    Jan 15, 2013
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    Hi,

    Is it possible to compare incoming packets against a text document, if the text document and the packets match (specifically TCP/IP packet) then the packet will be allowed through otherwise the packet will be dropped and a log file would be made?

    My current test environment consists of the following:

    Ubuntu 12.04 with netkit machines, manipulating tcp / ip packets (creating a covert channel) using scapy, , I will be using tcp dump to capture the packets and later view then on wireshark.

    I have been looking into the mangle table and the u32 module but unsure if packet authentication can be possible using iptables? using this setup.

    Any suggestions would be appreciated.

    Thanks
    Jack
     
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