Re: networking problem
- From: Allen McIntosh <nospam@xxxxxxxxxxxxxxxx>
- Date: Wed, 26 Apr 2006 16:40:12 -0400
Beef wrote:
I have two computers. Sheaf (192.168.0.2) runs Mandriva 2006, Porter
(192.168.0.3) runs Ubuntu 5.10.
They are connected to a NetGear Wireless ADSL router (model DG834G)I assume this was a typo (192.168.0.1?)
(192.168.0.3), by ethernet cables.
I can ping from sheaf to porter, but not from porter back to sheaf.
Do you get "Destination Host Unreachable" errors, or do the PINGs just vanish?
[Routing tables look OK.]
Both machines can go through the router to the internet.
Here are the routing tables:
A couple of thoughts:
- temporarily turn all firewalling off (if you are feeling paranoid, disconnect from the outside world first).
- make sure neither machine is filtering PINGs
- run "tcpdump -n" or ethereal at both ends and look for ARP traffic
- borrow a hub, connect both machines and the firewall to the hub, and see if the problem goes away. [I know this sounds weird, but I've seen hardware SNAFUs where this made a difference.]
- use a crossover cable instead of a hub. (Regular cable if one or both NICs can autosense)
.
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