Comments on: 20 CentOS Server Hardening Security Tips – Part 1

By: Jensen Ovesian

Jensen Ovesian — Tue, 03 Nov 2020 21:15:16 +0000

Yeah, I agree, I would never even install updates, that is the safer way to keep a machine online.

By: dragonmouth

dragonmouth — Thu, 06 Aug 2020 14:19:04 +0000

In reply to Ravi Saive.

Thank you for the link, Ravi.

By: Ravi Saive

Ravi Saive — Wed, 05 Aug 2020 05:08:20 +0000

In reply to dragonmouth.

@Dragonmouth,

That’s difficult to figure out, only an experience system admin can figure out. Check out the following article, might it help you – https://www.tecmint.com/remove-unwanted-services-from-linux/

By: dragonmouth

dragonmouth — Tue, 04 Aug 2020 14:44:56 +0000

In reply to Ravi Saive.

“If you can’t recognize a service that is displayed, you probably don’t need it.”

That is a very dangerous policy. I don’t mean to be a PITA but I ran the command you suggested and I do not recognize most of the services displayed. Somehow I do not think killing those I do not recognize would be a good idea.

My original question still stands- Is there any place where I can find descriptions of what each service does? Other than Google each service.

By: Ravi Saive

Ravi Saive — Tue, 04 Aug 2020 04:33:58 +0000

In reply to dragonmouth. While installing Linux, it installs a vast number of services to your system, but you need to know which services are needed or not by running netstat command.

# netstat -tap |grep LISTEN

The netstat command will show a list of all services that are presently running with the State of LISTEN. If you can’t recognize a service that is displayed, you probably don’t need it.