Reply To: Need to know what application is associated with a packet

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February 17, 2004 at 2:09 pm #5473
smilish
Participant

    Readable content? What do you expect? Machines are communicating…not humans! But you may see some readable frazzles.

    For DNS:

    1. Intercept all incoming UDP packets from remote-port 53 (DNS)
    2. Extract the DNS-information from the data-part of the packets (as described in RFC1034 and RFC1035)
    3. Modify the DNS-info
    4. Build new (faked) UDP packets
    5. Send them to your local-port

    That’s it!