[ubuntu-za] gateway setup problem

Corrie Strydom corrie206 at gmail.com
Fri Apr 3 16:06:16 BST 2009

Hi everyone, what a issue to be stuck with on a Friday afternoon.
Something changed (and I realy dont know what since last night) and
now I cant access a gateway/firewall on our work LAN.

I'm trying to access the gateway ( from my laptop
I cant ping the IP from my laptop, but I can ping and connect from
another computer on the network, same kind of settings as below.

Here is some info :

My laptop
$ cat /etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static

Ran route :
$ route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface   *        U     0      0        0 eth0     *          U     1000   0        0 eth0
default         UG    100    0        0 eth0

$ ifconfig eth0 :
eth0      Link encap:Ethernet  HWaddr 00:22:64:4d:5d:0e
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::222:64ff:fe4d:5d0e/64 Scope:Link
          RX packets:16700 errors:0 dropped:0 overruns:0 frame:0
          TX packets:16823 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:6036343 (6.0 MB)  TX bytes:1564634 (1.5 MB)

I can ping from the laptop other IPs on the LAN, within the same
range, but not the gateway on

I've asked the ISP to check their rules on the gateway, if they could
be blocking my IP to their gateway (pretty soon I'll put in my own
gateway/firewall, and really cant wait), but no luck?

any other suggestions?

(ps, I've restarted the networking interface a few times, flushed the
route table a few times, and restarted the whole computer a few times)

Thanks and have a briljant weekend (G0 Sharks!)


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