Issue Can't connect to server over SSH

[apaunovski]

I can't connect to my Plesk server over ssh. I get a connection refused error.

Without SSH access I am not sure how to troubleshoot the error.

Please help.

 

[Émerson Felinto]

This is easy to solve! Run the following command ...

Do you have access to plesk administrator?

 

[apaunovski]

Yes, I have full access to the Plesk admin interface.

 

[MarkM]

Use a tool such as MXToolbox to do a port scan and make sure port 22 is open from the outside;

Port Scan Tool - Online Port Scanner Tool - Scan common TCP Ports - MxToolBox

 

[apaunovski]

Says it's "Filtered"

 

[MarkM]

That's the issue. Who is your provider? Do they have an external firewall?

 

[apaunovski]

No, the server is not behind another firewall.

I think I have messed up (maybe) the settings of the server firewall. Is there a way to change the firewall settings from within PLESK ? I looked for such a setting in the interface, but couldn't find it under "security".

 

[MarkM]

Are you talking about iptables?

If you enable the Plesk firewall, they will override iptable rules.

 

[apaunovski]

IPTables.

I am not sure if Plesk's FW is enabled or not, as I cannot find the settings for the firewall in Plesk's interface.


I have Plesk Web Admin Edition, maybe that's the reason ? I don't have access to all the settings, maybe ?

 

[MarkM]

It's under Tools & Settings, then under Security. If you don't see it, you'll have to install it.

How to install Plesk Firewall

 

[Émerson Felinto]

<IP or hostname>:8443/admin/scheduler/add-task

Through this link you can execute commands as root and try to recover SSH access from there. >>> ftp://ftp.iitb.ac.in/LDP/en/solrhe/chap15sec122.html

Anyway, what intrigues me was how you managed to lose SSH access. You can try to change the SSH port as well and release it on the firewall. Are you sure SSH is using port 22?