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mariourk
l33t
Joined: 11 Jul 2003
Posts: 807
Location: Urk, Netherlands
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 Posted: Tue Sep 16, 2008 12:38 pm Post subject: Unable to ping second ADSL modem [SOLVED] |
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I have a second ADSL-modem hooked on my Gentoo-router. Somehow I'm unable to ping this modem, let alone accessing the modem.
My fist modem is connected to eth1. Eth1 has 10.0.0.150 as IP, the modem connected to it has 10.0.0.2 as IP. This works fine.
The second modem is hooked to eth2. Eth2 has 10.1.0.150 as IP, the modem connected to it has 10.1.0.2 as IP.
When I logon to my Gentoo-router (SSH) and ping 10.1.0.2, I get nothing. Both are in the same IP-range.
When I connect the modem to my laptop, I can access the modem, ping it and go on the internet with it.
I can't see why it doesn't work from my Gentoo-router.
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If there is one thing to learn from history, it's that we usualy don't learn anything from it, at all.
Last edited by mariourk on Wed Sep 17, 2008 9:09 am; edited 1 time in total |
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PaulBredbury
Watchman
Joined: 14 Jul 2005
Posts: 7310
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| Posted: Tue Sep 16, 2008 12:43 pm Post subject: |
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Little check:
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mariourk
l33t
Joined: 11 Jul 2003
Posts: 807
Location: Urk, Netherlands
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| Posted: Tue Sep 16, 2008 2:11 pm Post subject: |
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That gives
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Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.3.0 0.0.0.0 255.255.255.0 U 0 0 0 eth3
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 br0
10.1.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 10.0.0.2 0.0.0.0 UG 0 0 0 eth1
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10.0.0.2 being the default gateway is correct. The strange thing is that I can ping 192.168.3.x machines (connected to eth3) without any problem. The same goes with the machines connected to eth0 and eth1. It is only eth2 that gives trouble.
I also doubt if this is a routing problem. I'm not trying to route anything (yet) from the router itself it shouldn't be a problem to ping the modem. Right?
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If there is one thing to learn from history, it's that we usualy don't learn anything from it, at all. |
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mariourk
l33t
Joined: 11 Jul 2003
Posts: 807
Location: Urk, Netherlands
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| Posted: Wed Sep 17, 2008 9:09 am Post subject: |
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I had still a rule in my firewall with the old configuration of that modem. After changing that to the new IP it worked fine.
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-A POSTROUTING -o eth2 -j SNAT --to-source old-ip-address
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If there is one thing to learn from history, it's that we usualy don't learn anything from it, at all. |
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