Hey all- I've another silly question which I'm sure has a simple answer, yet it has eluded me, so here goes: I've got a RHL6.2 box I'm trying to setup as a router. Here's the configuration: --------------------- -Client1 - -ip:192.168.50.215 - -netmask:255.255.0.0- -gateway:192.168.3.1- --------------------- | |-------------------Rest of network, including 192.168.1.1 | ------ |eth0| ----------------------------- -Router - -eth0 ip:192.168.3.1 - -eth0 netmask:255.255.0.0 - -eth1 ip:10.15.69.1 - -eth1 netmask:255.255.255.0 - -gateway:192.168.1.1 - ----------------------------- |eth1| ------ | | | ----------------------- -Client2 - -ip:10.15.69.2 - -netmask:255.255.255.0- -gateway:10.15.69.1 - ----------------------- So, I've got a box with 2 NICs, each on a private network. I've installed and configured them, checked on "enable routing" in linuxconf, and turned on "Network Packet Forwarding" in netcfg. The only thing (I think) that's a bit odd here is that I've supernetted the 192.168 network, for reasons I won't go into right now. As near as I can tell, since both clients are using the Linux box as there gateway, and it has the appropriate routes with forwarding enabled, they should be able to hit each other fine. Instead, each client can ping either interface on the router, but the clients can't ping each other. The router can ping either client as well. I've tried adding the each of the networks (192.168.0.0 and 10.15.69.0) as static routes with the router interface ip addresses as gateways. I've tried checking and unchecking "enable routing" just for the hell of it. I've tried Setting the routed daemon to silent mode, and setting it to export the default route. I've tried getting rid of the gateway on the router, so it only knows about the local networks (which I believe may be the setup reflected below). I even messed with ip-chains a bit, telling it to "ipchains -P ACCEPT", in case there was some default denial I was unaware of. Everything I've read documentation-wise seems to say that routing is built-in to the kernel by default and that with the two cards and routing table I have, there should be no problem; it's "automatic". Yet, I can't get it to work. I did a TCPdump; when I ping from the 10.15.69.2 machine to the 192.168.50.215 machine, I see the request on the eth1 side, but no request or reply on the eth0 side; a ping the other way yields a similar result. If anyone can point me in the right direction of good documentation for something this simple, or has any advice, I'd appreciate it. Below you can find an output of my routing table and ifconfig. Thanks, Brian Here's what my routing table and ifconfig output looks like: Script started on Tue Oct 31 14:04:00 2000 [root@gateway /]# netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 192.168.3.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth0 10.15.69.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth1 10.15.69.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 192.168.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo [root@gateway /]# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.3.1 * 255.255.255.255 UH 0 0 0 eth0 10.15.69.1 * 255.255.255.255 UH 0 0 0 eth1 10.15.69.0 * 255.255.255.0 U 0 0 0 eth1 192.168.0.0 * 255.255.0.0 U 0 0 0 eth0 127.0.0.0 * 255.0.0.0 U 0 0 0 lo [root@gateway /]# ifconfig eth0 Link encap:Ethernet HWaddr 00:50:DA:28:BD:E8 inet addr:192.168.3.1 Bcast:192.168.255.255 Mask:255.255.0.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:580 errors:0 dropped:0 overruns:0 frame:0 TX packets:17 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 Interrupt:10 Base address:0xb800 eth1 Link encap:Ethernet HWaddr 00:50:DA:83:CE:D7 inet addr:10.15.69.1 Bcast:10.15.69.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:59 errors:0 dropped:0 overruns:0 frame:0 TX packets:5 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 Interrupt:11 Base address:0xb400 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:3924 Metric:1 RX packets:24 errors:0 dropped:0 overruns:0 frame:0 TX packets:24 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 ----------------------------- Brian J. Sweeney Systems Admin, imagedog.com email: [EMAIL PROTECTED] _______________________________________________ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk