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Old 07-20-2005, 11:28 PM   #1
NeoZeus
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Windows XP box losing connection to Linux box after 30 sec.


Ok, here's my problem. When I try to ping my Linux box (Fedora 3) from my Windows XP Pro box it passes for like 30 seconds, but after that I can no longer access my Linux box at all. The wierd thing is that I can ping from my Linux box to my Win box at any time and it always passes. Here is the setup: My Linux box is a bucket that I will be using as a server (Pentium at 400 Mhz, 192 Mb RAM, Realtek LAN Card I don't know which chipset). My Linux box (fixed ip 192.168.0.1) is connected by cable to my Planet WiFi access point (fixed ip 192.168.0.50), and my Win box (fixed ip 192.168.0.10) is connected to the access point by way of a Planet Wireless PCI card. Anyway, I can ping my access point from either box at any time and it always passes. When I click on repair connection on my Windows box connection then I can ping my Linux box again for another 30 seconds, but I lose the connection again after the 30 seconds. I turned off the firewalls on both boxes and still no progress. I have no idea what I am doing wrong! Please help!
 
Old 07-20-2005, 11:36 PM   #2
edong23
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icmp isnt usually a high priority for systems. do other programs disconnect? hav eyou tried putty and ssh into the linux box and run some commands and stuff for more than 30 sec to see it it disconnects? did ou check iptables?
 
Old 07-20-2005, 11:43 PM   #3
NeoZeus
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Actually, I have a Jive Messenger Server running on the Linux box, and I am connecting to it using a client on the Win box. I can connect to the server with the client, but like I said, I lose my connection after about 30 seconds.

About iptables: Could you please point me to a good thread or site, because I've never configured iptables before.

Thanks for your reply!
 
Old 07-21-2005, 12:02 AM   #4
edong23
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hm, forget the ip tables thing, that isnt it i see now. i would probalby be trial and erroring this, but did you try running ethereal on the linux box and see if any strange packets cause network failure on it? could it be bufferoverflow resulting in lose of packets? but then the pings would continue i would think. try ping flooding it from another linux box. the command is this, as root

ping -f <address>

and see if it disconnects faster. the idea is that if the system is haveing a hard time dealing with all the packets that are hitting it, then the flood should knock it down real quick.

i would also boot one of my live cds (slax, knoppix, whatev) and see if it does the same. which makes me ask, does it only do this if the jabber daemon is running? what does top reveal for cpu usage?
 
  


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