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cuban
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Joined: 23 Aug 2003
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Location: Houston, TX
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 Posted: Thu Dec 02, 2004 2:43 am Post subject: Linux server randomly drops connection to my Windows PC |
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It might be fault of my Windows PC, but my linux server randomly drops the connections. It won't respond to ICMP, SMB, SSH or FTP. I thought at first it was the NIC, but I noticed that I could go out via the internet and access ftp and ssh back through the holes in my firewall.
So I decided to try and ping it with another local box when it went down to my windows box, it kept the pings up.
I don't understand why it randomly just started doing this out of no where. They were both working before.
I'm running ethereal right now to get a capture of when it crashes. I'll post an update if I can.
Thanks for any help,
Daniel
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cuban
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| Posted: Fri Dec 03, 2004 6:43 am Post subject: |
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This is simply the nuttiest thing ever.
All I got with a tcpdump was out of order from SMB... I don't get it. It's like it just decides to stop responding to packets from my windows pc.
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cuban
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| Posted: Fri Dec 03, 2004 6:44 pm Post subject: |
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Anyone have any pointers to this at all? It's driving me mad!
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Korr.ban
Tux's lil' helper
Joined: 05 Jul 2004
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| Posted: Fri Dec 03, 2004 8:53 pm Post subject: |
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I had the same problem. In my case the problem was that my 2gig HD got filled up to 100% and gentoo could not write to the HD anymore.
Do "df" in console to check HD space being used.
I hope thats it.
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cuban
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Location: Houston, TX
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| Posted: Sat Dec 04, 2004 9:21 am Post subject: |
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/dev/root 54G 5.9G 46G 12% /
none 252M 0 252M 0% /dev/shm
/dev/storage/files 146G 54G 90G 38% /mnt/files
It responds to other machines, just not mine.
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nightblade
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Joined: 20 Jul 2004
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Location: back from SE Asia
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| Posted: Sat Dec 04, 2004 9:26 am Post subject: |
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| cuban wrote: |
It responds to other machines, just not mine. |
Do you have a switch or a hub in between ? Are the ports/interfaces set to the same speed/mode (eg: 100/duplex) ?
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nobspangle
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| Posted: Sat Dec 04, 2004 5:34 pm Post subject: |
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| Are you sure it's not your windows box at fault? If you are running service pack 2 you may be running in to problems with half open tcp connections (you're only allowed 10) p2p sharing programs like bittorrent will cause this. |
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cuban
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Location: Houston, TX
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| Posted: Sat Dec 04, 2004 7:03 pm Post subject: |
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| nightblade wrote: | | cuban wrote: |
It responds to other machines, just not mine. |
Do you have a switch or a hub in between ? Are the ports/interfaces set to the same speed/mode (eg: 100/duplex) ? |
I'm on gigabit, he's on 100 megabits. Both on the same switch.
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cuban
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| Posted: Sat Dec 04, 2004 7:04 pm Post subject: |
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| nobspangle wrote: | | Are you sure it's not your windows box at fault? If you are running service pack 2 you may be running in to problems with half open tcp connections (you're only allowed 10) p2p sharing programs like bittorrent will cause this. |
I don't have any P2P programs open, but I wouldn't be surprised if it's the windows box.
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cuban
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| Posted: Sat Dec 04, 2004 7:39 pm Post subject: |
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The issue has to do with a new XP SP2 setting.
EVENT_TCPIP_TCP_CONNECT_LIMIT_REACHED
It only allows 10 TCP connections at once. I've found a patch, but the patch only allows 50. I'm trying to find an "unlimited" setting.
I noticed it happens when I browse the web, thats because my privoxy uses a shitload of the connections.
I'll post back when I have more info.
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Korr.ban
Tux's lil' helper
Joined: 05 Jul 2004
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| Posted: Sat Dec 04, 2004 8:28 pm Post subject: |
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Thats why I wont install any windows other than Windows 2000 on my machines that I want running Windows. I have never had any problems with win2k no matter what I wanted to do. I always hear stories about XP pulling crazy shit on people.
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cuban
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| Posted: Sat Dec 04, 2004 9:45 pm Post subject: |
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| Korr.ban wrote: | | Thats why I wont install any windows other than Windows 2000 on my machines that I want running Windows. I have never had any problems with win2k no matter what I wanted to do. I always hear stories about XP pulling crazy shit on people. |
This is a "feature" in XP SP2.
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cuban
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| Posted: Sat Dec 04, 2004 9:46 pm Post subject: |
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Okay, this isn't the problem but whatever the problem is it still isn't fixed.
It continues to drop even my SSH sessions. Very annoying.
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nobspangle
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| Posted: Sat Dec 04, 2004 10:14 pm Post subject: |
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| cuban wrote: | | It only allows 10 TCP connections at once. I've found a patch, but the patch only allows 50. I'm trying to find an "unlimited" setting. |
It's not 10 tcp connections, it's 10 half open tcp connections (ones without replies) 50 should be plenty for anyone. |
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cuban
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Joined: 23 Aug 2003
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Location: Houston, TX
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| Posted: Sun Dec 05, 2004 7:36 am Post subject: |
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| nobspangle wrote: | | cuban wrote: | | It only allows 10 TCP connections at once. I've found a patch, but the patch only allows 50. I'm trying to find an "unlimited" setting. |
It's not 10 tcp connections, it's 10 half open tcp connections (ones without replies) 50 should be plenty for anyone. |
Well whatever it is, it didn't work.
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cuban
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| Posted: Tue Dec 07, 2004 3:26 am Post subject: |
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Okay. I changed network cards, changed motherboards and upgraded to kernel 2.6.9 from 2.6.1 and it's still doing this. When I lose my samba connection, I also lose SSH and ICMP.
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