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Linux - Networking This forum is for any issue related to networks or networking.
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Old 07-15-2004, 12:47 PM   #1
BluePyre
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Registered: Mar 2004
Location: London
Distribution: Mandrake 10
Posts: 172

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Not connecting to network suddenly.


One of the computers on my network doesn't connect to the it for some reason...
It was working fine yesterday.
ifconfig shows that it's not connected. It doesn't have its usual ip of 10.0.0.11, or any IP. Just 127.0.0.1.
I'm not sure what's causing it, but the changes I made yesterday were:
Set up nfs file sharing between the computers on my network.
I modified /etc/hosts.allow, /etc/hosts.deny, /etc/hosts, and /etc/exports. I disallowed anyone except root from being able to read /etc/hosts.allow/deny. I thought maybe something was happening in /etc/hosts.deny or allow, not allowing it to connect to the network, so I commented out everything I disallowed. Restarted, got the same problem.

The other computers on the network seem do not be having this problem, and i'm pretty sure I made the same changes to all of them.

Does anyone have any ideas, or is there any pieces of information you need that may be useful?

Thanks,
Paul
 
Old 07-16-2004, 12:27 AM   #2
osvaldomarques
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Registered: Jul 2004
Location: Rio de Janeiro - Brazil
Distribution: Conectiva 10 - Conectiva 8 - Slackware 9 - starting with LFS
Posts: 519

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Hi BluePyre,
It appears your problem is not related with your changes. However, the correct permissions for these files is "0644" or "-rw-r--r--", read/write to root and readable for all. If you don't see eth0 with ifconfig, it means that the network could not load. Try "lsmod" to see if the nic module is loaded. You may have a problem of "electrical contact lost" between your nic board and the motherboard. Look for strange messages in /var/log/messages and, if you try to observe carefully the messages during the boot you will see "FAILED" when setting up the eth0.
If this machine obtains its address via dhcp, maybe it couldn't obtain its address because of cable problems. In this case, if you enter "ifconfig eth0" it will show you the card configured, but without IP addresses.
 
Old 07-16-2004, 03:47 AM   #3
BluePyre
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Registered: Mar 2004
Location: London
Distribution: Mandrake 10
Posts: 172

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Rep: Reputation: 30

I changed the permissions of the files, then restarted. No luck.
I did an ifconfig and fount they weren't getting an IP address, so I took a wild stab and assigned the address manually, and what do you know!

Thanks
 
  


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