It seems as though you have taken the fuzzy sledge hammer approach. You should not have to edit any source files to turn routing on. All you should have to do is change the value of net.ipv4.ip_forward to '1' in the /etc/sysctl.conf file -- Jason Huddleston, CCSA Network Security Admin, Firewall Technician 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: Thursday, July 08, 2004 8:43 AM To: redhat-list@xxxxxxxxxx Subject: help Dear sir/madam, >i have the following problem -------------------------- >i have 3 system(a,b,c) connected by cross cable.thire connection is a---->b------->c the ip address are system a:eth0::192.168.10.5 and 10.10.10.3 system b:eth0::192.16810.7 and 10.10.10.7 system b:eth1::192.168.18.7 and 10.10.10.5 system c:eth0::192.168.18.5 and 10.10.10.5 mine objective =============== system b and c are shearing global ip(10.10.10.5). server programe(tcp) is running on both system b and c on b port::7500 on c port::5500 objective::system a request to get service from (10.10.10.5).this packet goto system b and b will check the destination ip along with the destination port , if port is 7500 it will accept the packet else b will forward to system c. ============================= i have done ============ >enable ip_forward option in system b. >modify the following files of kernel(system b only) /usr/src/linux2.4.20-8/net/ipv4 ip_input.c route.c ip_output.c ========================== problem faced by me =================== if its udp packet this perfectely works.(system a can recive service from b or c depending on the port) if its tcp packet then the problem a sends syn-packet to b. b checking the ip and port forwards it to c. c sends the ack packet to b but b drops it if i try to bipass the drop stastment by goto then system halts ============================= any type of suggestion are invited 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
