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There is no response from my VPS when I connect to the ftp service on port 21. It's a Linux server with kloxo and pure-ftp. I have been using it without troubles from past 8 months. I installed ConfigServer before few months, which didn't create any troubles but to check, I have disabled it.

It starts working at sometime for few minutes and then again stops for like 2-3hours and then again work for like 10-20minutes.

I tried connecting using telnet and it was blank response but after a few minutes, it started working.

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And yes, I can connect to the vps, from the browser, login to the control panel etc. all working only ftp is a trouble. –  happyhardik Jun 28 '12 at 12:39
Disable any/all firewalls and try again. Check your system logs for restarts/crashes. Your question is far too vague, please look into the problem more and update the Question. –  sonassi Jun 28 '12 at 12:47
Thanks for the migration Chris S. I have had only one firewall ConfigServer, which I had disabled yesterday in an effort to resolve this problem, but didn't help. –  happyhardik Jun 28 '12 at 12:59
checking server log to get more info. –  happyhardik Jun 28 '12 at 13:04
Now is has permanently stopped. ConfigServer is turned off. Nothing in the server logs. –  happyhardik Sep 6 '12 at 17:10
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migrated from serverfault.com Jun 28 '12 at 12:52

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