Hi Marcin,
I'd like to ask if it possible to change "data" field (its content) in TCP packet on fly? I don't need to change data's lenght but only change few bytes in it.Example: 0000 ff ff ff ff ff ff 00 11 25 31 ad e0 08 00 45 00 ........%1....E.
much you can do with tcpdump. Regards, Ruprecht ------------------------------------------------------------------------------------------ Ruprecht Helms IT-Service & Softwareentwicklung Tel./Fax +49[0]7621 16 99 16 Web: htp://www.rheyn.de