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My FTP server keeps "hanging up" untill i reboot the server...

Posted on 2009-07-14
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Last Modified: 2013-12-02
Hello experts,

I have an interesting issue that i cannot figure out.  My FTP server that is set up in my DMZ here is designed to (obviously) transfer files from clients out in the world to our FTP server.  But every once in awhile (every few days) the server becomes unresponsive and nothing fixes this issue EXCEPT rebooting the machine.  Once I reboot everything is back to normal and working fine.  

Spec:
Microsoft Windows Server 2003
Standard Edition
SP2
Intel CPU 3.00GHz
3.00GHz, 2.00 GB of RAM

Troubleshooting:
I have tried just restarting the ftp services in the 'services' area of administration tools.
Nothing that stands out in the event viewer either.  On the days that i have to reboot the server there is nothing in the event viewer as far as an error or warning.

Hypothesis:
Just some guesses if had as to what the issue is but none of these have been tested yet, NIC, the FTP software im using for the transfer (Core FTP), SID, an AD issue

Let me know if you need any additional information.

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Question by:MGaff
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Accepted Solution

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willettmeister earned 500 total points
ID: 24848522
do you have a lot of open connections to FTP when it "locks up".

Run a netstat -an | find ":21"
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Author Comment

by:MGaff
ID: 24848532
No, i usually only have 1 or two connections at any given time.
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LVL 11

Assisted Solution

by:willettmeister
willettmeister earned 500 total points
ID: 24848573
check your switches and see if you are incrementing errors on them.  My guess though is that  you FTP server installation had become corrupted.  
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Author Comment

by:MGaff
ID: 24848594
I cannot check the switches because they are cisco products and we have a contract with an outside vendor to touch those... How can i go about checking my FTP installation?
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Assisted Solution

by:willettmeister
willettmeister earned 500 total points
ID: 24848718
My guess is that the fastest solution would be to re-install the software.  Most FTP software that I have worked with only takes 5 minutes or so to install.  You could waste hours trying to track down an issue and never find one.
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Author Comment

by:MGaff
ID: 24848798
I dont understand what you mean?  There is no software for FTP on the server side.  Just client software to pull the info down in a GUI.  Are you suggesting i disable FTP as a role on the server ?
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LVL 11

Assisted Solution

by:willettmeister
willettmeister earned 500 total points
ID: 24848836
You are running IIS as your ftp server then?  You remove remove and re-add iis ftp through the control panel.  Go to add/remove programs and then choose windows components.  
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Author Comment

by:MGaff
ID: 24860878
Totally removed IIS and FTP services from the server and re-installed everything.

And we had to reboot the server last night during transfers.  Could this be a DNS issue?

Please Help
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LVL 11

Assisted Solution

by:willettmeister
willettmeister earned 500 total points
ID: 24869361
I doubt it's DNS.  I think you need to put in a ticket and have your vendor look at your switch.  I bet you are incrementing errors on the port that the FTP is plugged into.
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Author Closing Comment

by:MGaff
ID: 31603211
Ended up being 2 defined Gateways for that server since it was set up in DMZ.
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