[WBEL-users] Newby at Ip Forwarding

[Jesús García González]

Hello, 

Please Help

I just added a second network card to a Compaq Proliant ML 310. At first it
stopped recognizing the original card (had to remove both cards from kudzu
database to have them both reinstalled) Anyway, now I have both cards
working (properly?):

eth0      Link encap:Ethernet  HWaddr 00:0B:CD:CF:CA:87
          inet addr:10.90.35.7  Bcast:10.90.35.255  Mask:255.255.255.0
          (…)

eth1      Link encap:Ethernet  HWaddr 00:40:F4:84:AD:9C
          inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
          (…)

I then turned IP forwarding on:

[root@minerva etc]# echo "1" > /proc/sys/net/ipv4/ip_forward


The route table on the server is the following:

[root@minerva log]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
10.90.35.0      *               255.255.255.0   U     0      0        0 eth0
192.168.2.0     *               255.255.255.0   U     0      0        0 eth1
192.168.1.0     *               255.255.255.0   U     0      0        0 eth1
169.254.0.0     *               255.255.0.0     U     0      0        0 eth1
127.0.0.0       *               255.0.0.0       U     0      0        0 lo
[root@minerva log]#

The test PC has this route table:

===========================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 08 74 9f b0 6e ...... 3Com 3C920 Integrated Fast Ethernet
Controller (
3C905C-TX Compatible) - Packet Scheduler Miniport
===========================================================================
===========================================================================
Active Routes:
Network Destination        Netmask          Gateway       Interface  Metric
          0.0.0.0          0.0.0.0       10.90.35.1     10.90.35.61       20
       10.90.35.0    255.255.255.0      10.90.35.61     10.90.35.61       20
      10.90.35.61  255.255.255.255        127.0.0.1       127.0.0.1       20
   10.255.255.255  255.255.255.255      10.90.35.61     10.90.35.61       20
        127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1       1
      192.168.1.0    255.255.255.0       10.90.35.7     10.90.35.61       1
      192.168.2.0    255.255.255.0       10.90.35.7     10.90.35.61       1
        224.0.0.0        240.0.0.0      10.90.35.61     10.90.35.61       20
  255.255.255.255  255.255.255.255      10.90.35.61     10.90.35.61       1
Default Gateway:        10.90.35.1
===========================================================================
Persistent Routes:
  None

The server can ping pc's on both networks (10.90.35.0) & (192.168.1.0) but a
pc on one network can't ping the other.

When I run a tracert at 10.90.35.61 I get:

C:\ >tracert -d 192.168.1.1

Tracing route to 192.168.1.1 over a maximum of 30 hops

  1    <1 ms    <1 ms    <1 ms  10.90.35.7
  2     *        *        *     Request timed out.
  3     *        *        *     Request timed out.
  4     *        *        *     Request timed out.
 (...)

I should conclude that my Linux Server is not forwarding packets from one
network to the other.
Please, can somebody help me? What Am I doing wrong?

Note: (IPTables has no rules and the default policy is accept)

J.



 
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