ProFTPd connections stops working - Plesk 10.4.4 Update #40

[RinkeB]

Hello,

I have a strange problem with FTP connections to a Plesk server running ProFTPd on CentOS. The problems occurs on various times. When i connect to the server it goes well but then after a couple of seconds/minutes (random) it stops working an the connection is being reset/stopped.

The problem occurs on various systems connecting trough FTP. Firewall 21 is open. When i restart xinetd it seems to be working for a couple of minutes and then the problems keep coming back.

See content of xfertrace in attachment, this is a copy of when the connection was being reset after i opened test.php en tried to save it back trough FTP (Zend PHP IDE):

Can someone help me any further?

 

[RinkeB]

No one has a clue? #bump

 

[coolcap]

telnet

Did you tried to perform a local telnet on port 21 ?

 

[RinkeB]

Coolcap, yes that works as expected:

user@server:~$ telnet localhost 21
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 ProFTPD 1.3.3e Server (ProFTPD) [127.0.0.1]

 

[abdi]

What do you have in /etc/hosts

 

[RinkeB]

Abdi, the /etc/hosts file is not touched its default:

# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6