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Fedora Core 4 Issue

post #1 of 10
Thread Starter 
I have been running FC4 for a few weeks with no problems. It is behind a firewall with the following ports opened:

8, 21, 22, 25, 80, 443, 143, 110, 1433-1434, 3306, 3389, 10000
(It is a shared profile with a windows box)

Yesterday, my entire network went down, nothing was coming in or going out. I rebooted the router and nothing. I could ping the router, but only intermitantly, most of the time all packets were lost. The router was showing a lot of traffic coming from the linux box. I unplugged its network cable and the rest of the network came back up. I rebooted the linux box and put it back online. As of now everything is fine, however I can't let this continue.

Is there any plausible explanation for this?
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post #2 of 10
I dont know your setup but it sounds like DoS
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Quad Core box
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CPUMotherboardGraphicsRAM
Core 2 Quad Q6600 @ 3.2 GhZ Asus P5N-D SLI 8600GT x2 (SLI) CORSAIR XMS2 4GB(2 x 2GB) 240-Pin DDR2 SDRAM 
Hard DriveOSMonitorKeyboard
250 GB WD X 3 Vista, XP, and CentOS 5 19 inch LCD Generic 
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650 watt XION gaming case Logitech Marble Trackball 
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post #3 of 10
Is this the only time it has happened or has it started doing this often?
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BlackMesa
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CPUMotherboardGraphicsRAM
Phenom II x6 Gigabyte XFX RF460 16gb G.Skill 
Hard DriveHard DriveOSMonitor
OCZ Vertex2 Sata II Coorsair Force GS Sata III Debian (testing) Shimian 27" 
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Filco w/ blue cherries Who needs a mouse? 
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post #4 of 10
Has the problem repeated itself?

I'd turn off all network services on that machine. See if it's still generating/receiving any traffic.
post #5 of 10
Thread Starter 
It has only done it once so far.
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post #6 of 10
Well you could Disable any Netwroking options as such and or services you dont need to help with resources and also if it happens again its easier to pinpoint the Problem ..Also as i cant remember is that A Dos interface you are using or a GUI.?
post #7 of 10
Thread Starter 
It has a GUI, I just never log into it. If I turn off the network services I may as well turn off the box. It is a server and its sole purpose is to run those network services in question. Here is what I have running:

Servers:
Samba
SSH
UW-IMAP
Postfix
Apache (w/PHP)
MySql
ProFTP

Applications:
Horde +Many Modules
Serendipity
Coppermine
Webmin

All of those applications are in current use. I host mail and websites for about a dozen people.
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post #8 of 10
Well hmmm im not to sure what to do from here on in.so BUMP
post #9 of 10
Quote:
Originally Posted by BFRD
It has a GUI, I just never log into it. If I turn off the network services I may as well turn off the box. It is a server and its sole purpose is to run those network services in question. Here is what I have running:

Servers:
Samba
SSH
UW-IMAP
Postfix
Apache (w/PHP)
MySql
ProFTP

Applications:
Horde +Many Modules
Serendipity
Coppermine
Webmin

All of those applications are in current use. I host mail and websites for about a dozen people.
Oh, I see. I was hoping to see if you could monitor the machine, and see if the system might have been compromised.

Are all the servers updated?
post #10 of 10
Thread Starter 
I am not that familiar with the best way to monitor Linux machines. I don't even know if my logs are set up properly. As far as server maintenance goes I am much more adept at keeping track of windows boxes.
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