On Sat, Aug 12, 2000 at 04:37:50AM -0700, Peter Welte wrote > hey there... > > I have a linux computer that is supped to act as a > gateway to a school network and the internet for some > linux clients, but im having this problem right now > where the gateway itself can't even ping another > computer on the school network. The gateway's ip > address is 192.168.1.12 (er, that is eth0, which is > connected to the school network) and the computer i am > trying to ping is 192.168.1.5. i cannot figure out > what is wrong with my network setup, so if anyone out > there could help me, i would greatly appreciate it! > [snip fairly normal looking ifconfig & route details] > ##and here is me pinging an internal network comp: > PING 192.168.1.12 (192.168.1.12): 56 data bytes > 64 bytes from 192.168.1.12: icmp_seq=0 ttl=255 > time=2.6 ms > 64 bytes from 192.168.1.12: icmp_seq=1 ttl=255 > time=1.5 ms > 64 bytes from 192.168.1.12: icmp_seq=2 ttl=255 > time=1.5 ms > 64 bytes from 192.168.1.12: icmp_seq=3 ttl=255 > time=1.5 ms > > --- 192.168.1.12 ping statistics --- > 4 packets transmitted, 4 packets received, 0% packet > loss > round-trip min/avg/max = 1.5/1.7/2.6 ms >
This is actually you pinging your own NIC according to the ifconfig output you posted, so it proves little. > > > ##And finally, here is me trying to ping the computer > on the school network: > PING 192.168.1.5 (192.168.1.5): 56 data bytes > ping: sendto: Operation not permitted > ping: wrote 192.168.1.5 64 chars, ret=-1 > ping: sendto: Operation not permitted > ping: wrote 192.168.1.5 64 chars, ret=-1 > > --- 192.168.1.5 ping statistics --- > 2 packets transmitted, 0 packets received, 100% packet > loss > > I'd check your ipchains/ipfwadm rules. If you're running kernel 2.0.x, what does the output of # ipfwadm -I -l -e # ipfwadm -O -l -e # ipfwadm -F -l -e look like? If you're running kernel 2.2.x, what does the output of # ipchains -L -v look like? John P. -- [EMAIL PROTECTED] [EMAIL PROTECTED] http://www.mdt.net.au/~john Debian Linux admin & support:technical services
