Can't see Ubuntu laptop on Lan from Vista

[Innova]

I have a web server and network share set up on my Unbuntu 9.04 laptop. I can not ping, or connect to the share or the web server from another laptop (Vista) on the LAN.

I can ping and connect to the web server from a ubuntu desktop that is on the lan. When I do a smbclient -L //192.168.0.4 I can see the shared folder.

However, a net view \\192.168.0.4 on the Vista laptop does not work (system error 53).

It seems like there is some firewall in place, but only for the vista machines?

Any ideas on what to check next?

[Iowan]

It seems like there is some firewall in place, but only for the vista machines?

Any ideas on what to check next?

Perhaps the firewall is on the Vista machine. If you can find the command prompt (I'd have to check my laptop to find how), you should be able to ping the Ubuntu machine.

[Innova]

I can't ping the ubuntu machine either.

[Innova]

I turned the firewall off on the vista machine. This is what I see when I try to ping the ubuntu machine:

Pinging 192.168.0.4 with 32 bytes of data:

Reply from 192.168.0.5: Destination host unreachable.
Reply from 192.168.0.5: Destination host unreachable.
Reply from 192.168.0.5: Destination host unreachable.
Reply from 192.168.0.5: Destination host unreachable.

Ping statistics for 192.168.0.4:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

I'm not sure why they reply is from a different IP than the ping?

[MaindotC]

That could indicate the presence of a foreign node on your network. If I were you I'd be very sure that no one is breaking into your network. If someone loaded a root kit on your machine the only way to get rid of it is with a nice, fresh, clean install.

[Innova]

Any other ideas? How could I check that out?

[philcamlin]

Any other ideas? How could I check that out?

try rk hunter to see if you have any rootkits

[Innova]

Rootkit checks...
    Rootkits checked : 113
    Possible rootkits: 0

I got a couple warnings, mostly about commands being replaced with scripts. (ldd, groups, which, lwp-request, adduser). But besides that everything checked out ok.

How do i debug the network problem?

[badger_fruit]

I am betting this is a Vista problem, it sucks at most things and cross-platform networking is no exception.

What is 192.168.0.5? is that the machine you're trying to PING from?

I see something similar in Suse when I ping an unknown host or bad IP; the "reply" comes from the machine trying to do the ping.
You're going down the wrong path with the checking of rootkits and so on I think ... goto Control Panel > System Security or whatever it's called, turn off AV, Firewall and any other things that are turned on.

Try again.

Success?

[Innova]

I didn't have AV on, I turned off the firewall and windows defender, still getting the same response.

And yes, the machine that I was pinging from was 192.168.0.5.

What's the next thing to check?