On Fri, Jan 09, 2004 at 03:57:07PM +0000, YACINE GHANJAOUI wrote: > when trying to intercept UDP packet after changing the protocol number > from 17 to a user one (99) in the ip_input.c file. when trying to > regenrate the packet after inserting some bit errors an error message > appears in the reciever telling that The udp checksum is incorrect even if > i just change the ip Header. > What do you think the problem is?
You didn't read how UDP checksums were calculated, did you? Here is one free clue: Look at the definition of in_pseudo() and where it is used. Use the source. look! BMS _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
