Re: Network Connection Problem

[John Nichel]

Another place to look is the NIC card in the RH machine connected to the HUB, and the NIC's in the Win9x boxes. I just went through a problem like this recently, and it was the Linksys NIC card (LNE100TX) that I had in the Linux box (seems that this particular card has problems dropping the connection from time to time on both Windows and Linux). I changed the card to a Netgear one, and it has worked fine since.

[EMAIL PROTECTED] wrote:

I haven't seen any replies to this. This is a stab in the dark...
Are the Win98 boxes dhcp clients? (i.e. you ticked the
"obtain IP address automatically" box).
If so are you running dhcp server?

Can they still ping the server even when they
cannot ping the outside world? i.e. is the problem
at the NAT level or the local network?

Can you ping by ip-number when you cannot ping by name?
Could it be a problem with your DNS lookups?

Is the behaviour synchronised? i.e. All win98 boxes hang
at the same time?

maybe start logging all rejected/dropped packets and see what
is being dropped at the time.

Sorry there's nothing too specific.

Cameron.

-----Original Message-----
From: Jake Colman [mailto:[EMAIL PROTECTED]] Sent: Saturday, 21 December 2002 4:31 AM
To: RedHat List
Subject: Network Connection Problem



I have a very simple SOHO network toplogy consisting of an inexpensive 8-port hub and cat-5 wiring. I have a RH 7.2 server and several Win98 machines. The server has two NICs, one connected to the Internet via a cablemodem and the other connected to the hub. The server used iptables to do masqing and firewalling and everything works like a charm.

However...

Periodically my Win98 systems will lose connectivity to the internet. When that happens I can still ping the internet from the server itself but cannot ping the internet from the Win98 machine. After a minute or two my Win98 machine will begin working again.

Any idea what might explain this? Any idea how I can track down what might be going on?

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Jake Colman
Principia Partners LLC Phone: (201) 209-2467
Harborside Financial Center Fax: (201) 946-0320
902 Plaza Two E-mail: [EMAIL PROTECTED]
Jersey City, NJ 07311 www.principiapartners.com



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