Very Computer

I have a linux box that I am attempting to get to act as a router, then
perhaps if I can get this working, I'll turn on firewalling.  The Cisco
router to the internet's interface is at 249.149.6.1, which plugs into a
hub where the Linux router is.  The linux box has two NICs in it, the
one plugged into the Cisco hub is 209.149.6.2/255.255.255.224, the card
plugged into a hub with various servers is
209.149.6.38/255.255.255.224.  

Ifconfig returns the following:
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Bcast:127.255.255.255  Mask:255.0.0.0
          UP BROADCAST LOOPBACK RUNNING  MTU:3584  Metric:1
          RX packets:86 errors:0 dropped:0 overruns:0 frame:0
          TX packets:86 errors:0 dropped:0 overruns:0 carrier:0 coll:0

eth0      Link encap:Ethernet  HWaddr 00:60:08:03:95:A5
          inet addr:209.149.6.2  Bcast:209.149.6.31
Mask:255.255.255.224
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:232 errors:0 dropped:0 overruns:0 frame:0
          TX packets:54 errors:0 dropped:0 overruns:0 carrier:0 coll:0
          Interrupt:9 Base address:0x6100

eth1      Link encap:Ethernet  HWaddr 00:60:08:03:95:4C
          inet addr:209.149.6.38  Bcast:209.149.6.63
Mask:255.255.255.224
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:426 errors:1 dropped:0 overruns:0 frame:1
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 coll:0
          Interrupt:11 Base address:0x6200

Route returns the following:
Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
209.149.6.0     0.0.0.0         255.255.255.224 U     0      0        2
eth0
209.149.6.32    0.0.0.0         255.255.255.224 U     0      0        0
eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        1
lo
0.0.0.0         209.149.6.1     0.0.0.0         UG    1      0        1
eth0

When pinging a host on the other side of the Linux box from either
direction, the ping fails.  The Linux box itself can be pinged (both
interface).  It appears to have a routing problem, although it isn't
obvious to me what the problem is.

TIA

ipfwadm -F -a a -S 209.149.6.32/224 -D 0.0.0.0/0

Walker

I'll try adding the forwarding stuff in IPFWADM to see, although I don't
have firewalling turned on, and when I did it was defaulting to
accepting everything and forwarding turned on with no rules applied by
me.

Thanks, if you have further ideas please let me know.

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   Yes, your tables look right (more cautiously: I didn't see anything
   wrong), but have you told your router and your machines on the
   other side that your local net is subnetted ? Yes, network 0 is
   legal (nowdays), but you may have to configure your Cisco box with
   "ip subnet-zero" (if I remember correctly). And some older machines
   may not accept this. So you have to configure your Cisco so that
   the gateway for 209.149.6.32/27 (this is the usual notation, the
   length of the netmask) is 209.149.6.2, and the machines on the
   other subnet so that  the gateway to 209.149.6.0/27 is 209.149.6.38.
   If you can't do this (e.g. the router is not under your administrative
   control, or some machines don't understand subnetting correctly)
   you'll have to use Proxy ARP for the subnet on the "opposite"
   interface; see "man arp", and there may be a HOWTO or mini-HOWTO on
   Proxy ARP-ing.

      RB