Share your knowledge at the LQ Wiki.
Go Back > Forums > Linux Forums > Linux - Networking
User Name
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.


  Search this Thread
Old 01-05-2005, 02:58 PM   #1
LQ Newbie
Registered: Jan 2005
Posts: 6

Rep: Reputation: 0
ssh and nfs connections refused by Linux host running RedHat 9.0 and having 2 NIC

Hello to all.
At virtual gunpoint, I have upgraded the master computer in our cluster to RedHat 9.0 2.4.20-8smp from RedHat 7.2 2.4.18-asmp (I know, old technology, but it worked). The box has two NIC cards (Intel PRO/1000 10/100/1000 GETH PCI Adapter); one speaks to our network (eth0) and the other to the cluster nodes (eth1). From the master computer, I can get out and about using ssh, smbclient, etc. I will note that -- during a smbclient session where I was creating a tarball of files on a Win2K machine -- the connection timed out after some period of time that was < 10 minutes. From our networked computers (Linux and Win2K boxes) I can ssh into the machine and nfs mount the RAID that's attached, but the connections are closed randomly by the master computer. Subsequent attempts to ssh into that machine or to nfs mount the RAID are then refused until some time later (again, appears random). I can always ping the master computer, even when the connections are being refused.

Here's what I know...
I have completely disabled the firewall, and ipchains/iptables are disabled. For grins, I have set the "Keep Alive Yes" in the /etc/ssh/sshd_config file. I have verified that there are no autologout settings in the system-wide login files. I have included an ALL: domain line in the /etc/hosts.allow.

I am really out of ideas and would appreciate any and all suggestions.
Old 01-21-2005, 11:13 AM   #2
LQ Newbie
Registered: Jan 2005
Posts: 6

Original Poster
Rep: Reputation: 0
issue resolved - might be of interest?

To all -
My original thought (discarded without research by our IT group) was that another machine on our network was using the same IP address (we use DHCP for most desktop machines). It turns out that they 'forgot' that they assigned that IP address to a printer that arrived the same day I upgraded the OS. This became clear when I finally gave up, removed the ethernet cables from the machine and then decided to ping it from a networked machine... of course, the ping was successful (big surprise). Anyway, though I have lost quite a bit of hair, the problem is solved.
Thanks to any who read and gave thought to the problem, and thanks to those who refrained from sending some sort of "you're a moron" note.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
NFS problem - connection refused from distant host Agrouf Linux - Networking 4 10-17-2005 02:24 PM
SSH connection refused using linux box 90coders Linux - Security 3 10-18-2003 02:53 AM
ssh: remote connections refused Skurge Linux - Networking 8 08-18-2003 12:28 PM
One linux box and nic card, two high-speed internet connections ajnunes Linux - Networking 3 10-24-2002 04:34 PM
SSH - Refused Connections bfloeagle Linux - Networking 6 08-31-2001 12:16 AM > Forums > Linux Forums > Linux - Networking

All times are GMT -5. The time now is 04:15 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration