Have you tried natting c behind b??? -- Jason Huddleston, CCSA Assistant Coordinator Internet Services and Security Ozarks Technical Community College huddlesj@xxxxxxx 417-895-7798 -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of kanhu rauta Sent: Tuesday, July 13, 2004 5:35 AM To: redhat-list@xxxxxxxxxx Subject: Re: help forwarding Dear sir, SORRY FOR MINE POOR ENGLISH. this is mine configuration. a----------------->b------------------------------------------->c 10.10.10.5(global ip) 10.10.10.5 port=7500 port=5500 server s1 server s1 >now server s1 is running on both the machine but on different port. Objective --------------------- >if 'a' sends a packet(ip=10.10.10.5 dport=7500) .then this packet is recive by 'b' >Otherwise forward it to 'c' --------------------------- >i have made modification on the source code(also ip_forward enabled). >for udp its no problem >for tcp,one way forwarding is no problem.('a' sends a syn packet having destination ip=10.10.10.5 and dport=5500 to 'b'. now 'b' forwards it to 'c') >now the ack packet 'c' sends to 'b'.but 'b' can't deliver it to 'a'. >i have followed the same techineque for forwarding from 'b' to 'a'(as that of i do while forwarding 'b' to 'c') skiping the source validation .still it hangs sometimes not always.i gives the cases CASE 1: ------- >send a udp packet having(ip=10.10.10.5 port=5500) from 'a'.it reaches at 'c' >now send a packet udp packet from 'c' to 'a'.it reaches >now send a tcp packet from 'a'(ip=10.10.10.5 dport=5500).it reaches to 'c' also reply comes to 'a'.its working, its fine. CASE 2: ------- >if i first tries to send a tcp packet having(ip=10.10.10.5 port=5500) then system 'b' hangs. CASE 3: --------- >if i first send a udp packet from 'c' to 'a'.system 'b' hangs. i did not getting the problem. With Regards kanhu -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subjecthttps://www.redhat.com/mailman/ listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
