[PLUG] Routing problem?

["Brent R. Matzelle" <bmatzelle@yahoo.com>]

Hello Everyone,

I just setup a firewall with RH 7.2.  I am using the Comcast @Home
service to get access.  I turned on routing echo "1" >
/proc/.../ip_forward .  The Linux box can ping any internal and
external IP address and the win32 clients can ping the gateway (eth1)
192.168.0.1.  Unfortunately the win32 machines cannot ping any
external addresses.  A tracert shows that it goes to the firewall but
gets no further than 192.168.0.1.

On the firewall if I try to ping the external card from the internal
card (ping -I eth1 68.80.22.26) I get no reply.  This suggest to me a
routing problem.  

Here are some configuration stats:

eth0      Link encap:Ethernet  HWaddr 00:60:97:B6:58:B2
          inet addr:68.80.22.26  Bcast:68.80.23.255 
Mask:255.255.248.0
          UP BROADCAST NOTRAILERS RUNNING  MTU:1500  Metric:1
          RX packets:82015 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3214 errors:0 dropped:0 overruns:0 carrier:0
          collisions:1 txqueuelen:100
          RX bytes:5331816 (5.0 Mb)  TX bytes:424036 (414.0 Kb)
          Interrupt:10 Base address:0xfe80

eth1      Link encap:Ethernet  HWaddr 00:60:08:08:FD:C2
          inet addr:192.168.0.1  Bcast:192.168.0.255 
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3363 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4447 errors:0 dropped:0 overruns:0 carrier:1
          collisions:0 txqueuelen:100
          RX bytes:325564 (317.9 Kb)  TX bytes:407916 (398.3 Kb)
          Interrupt:10 Base address:0xff00

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:259 errors:0 dropped:0 overruns:0 frame:0
          TX packets:259 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:25781 (25.1 Kb)  TX bytes:25781 (25.1 Kb)


Here is route -n:
Kernel IP routing table
Destination   Gateway   Genmask         Flags Metric Ref    Use Iface
192.168.0.0   0.0.0.0   255.255.255.0   U     0      0      0   eth1
68.80.16.0    0.0.0.0   255.255.248.0   U     0      0      0   eth0
127.0.0.0     0.0.0.0   255.0.0.0       U     0      0      0   lo
0.0.0.0       68.80.16.1  0.0.0.0       UG    0      0      0   eth0

Any suggestions for solving this problem?

Warm regards,

Brent

__________________________________________________
Do You Yahoo!?
Yahoo! Tax Center - online filing with TurboTax
http://taxes.yahoo.com/

______________________________________________________________________
Philadelphia Linux Users Group       -      http://www.phillylinux.org
Announcements-http://lists.phillylinux.org/mail/listinfo/plug-announce
General Discussion  -  http://lists.phillylinux.org/mail/listinfo/plug