Question on the absolute minimum ports required to run Plesk

[ADAmico70]

I need to install Plesk on a Linux server. The IT department is concerned because in the Plesk documentation it seems to infer that I need a number of ports open (23 of them) for the panel to work correctly. They would like to keep the ports to a bare minimum. I've copied the list below for reference. Specifically they do not want to open DNS and SMTP, but still limit them as much as possible.

I will be using the server to forward the results of a feedback form to the company (but I assume I can open SMTP to the localhost only vs. the outside).

Any advice would be appreciated, thank you.
#20 ftp-data (TCP)
#21 ftp (TCP)
#22 ssh (TCP)
#25 smtp (TCP)
#53 dns (TCP and UDP)
#80 http (web server and Plesk updater) (TCP)
#106 poppassd (for localhost only) (TCP)
#110 pop3 (TCP)
#113 auth (TCP)
#143 imap (TCP)
#443 https (TCP)
#465 smtps (TCP)
#587 mail message submission (TCP)
#3306 mysql (TCP)
#5224 (outgoing connections only) plesk-license-update (TCP)
#5432 postgres (TCP) - Linux Only
#8443 plesk-https (TCP)
#8447 autoinstaller (TCP)
#8880 plesk-http (TCP)
#9080 tomcat (TCP)

From version 9.0 to version 10.2:
#11443 sw-cp-serverd (TCP)- Linux Only
#11444 sw-cp-serverd (TCP) - Linux Only

Since version 9.0:
#12768 psa-pc-remote (for localhost only) (TCP) - Linux Only, postfix

 

[IgorG]

http://kb.parallels.com/391

 

[ADAmico70]

Yes, that is where I got the original list I posted. But what I'm asking though, for example, if I turn off any of those ports from the outside would Plesk still work (obviously not HTTP or HTTPS). For example if I have no need of tomcat or imap, if I turn those ports off at the server level will Plesk still work?

 

[IgorG]

Yes, that is where I got the original list I posted. But what I'm asking though, for example, if I turn off any of those ports from the outside would Plesk still work (obviously not HTTP or HTTPS). For example if I have no need of tomcat or imap, if I turn those ports off at the server level will Plesk still work?

Yes, it is the same when you have stopped imap or tomcat services and corresponding ports are not working.