I'm running a CentOS server which I had to reboot.

However, after the reboot I found myself unable to install wordpress plugins via its admin control panel, as I'm getting a 'failed to connect' message:

wordpress install new plugins page screenshot

This is strange since the the same configuration worked before the reboot.

Any ideas on what can be the problem?

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Could you connect to the server via ssh and give us the output for the following commands: iptables -L -v -n, chkconfig --list and netstat -an? Make sure you do this with the appropriate rights (sudo/su) – Bart De Vos Oct 11 '11 at 9:38
Thank you. I ran these commands, but isn't it a little problematic - security wise - to upload the output to here as they include our IP addresses? Also, the outputs of the last 2 commands are very long. What do you say? – Lea Cohen Oct 11 '11 at 9:57
Filter out the IPs if you want, no problem. In chkconfig --list look for a line with FTP. In netstat look for lines containing ftp, 20 or 21. – Bart De Vos Oct 11 '11 at 10:01
ps -ef | grep ftp? – quanta Oct 11 '11 at 10:08
The chkconfig --list output that has ftp in it is this: vsftpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off. netstat's output doesn't give me anything containingftp, 20 or 21 – Lea Cohen Oct 11 '11 at 10:34
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vsftpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off

It means that vsftpd is not starting at boot. Execute the following commands as root:

/etc/init.d/vsftpd start
chkconfig vsftpd on
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Thank you, That solved the problem! Do you have an idea what we could do to avoid this in the future? – Lea Cohen Oct 11 '11 at 10:59
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chkconfig vsftpd on already makes it is starting at boot. – quanta Oct 11 '11 at 11:04
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