Auditing a Linux (CentOS) server

Hi Everybody,
I've dusted off one of my old servers and want to install it into my Cisco lab. I believe it has LAMP, Radius, Syslog server, a Blog and more. The problem is I dont know how to find any of it and I foolishly already changed its ip configs.

Soooo my question is, when you look into a configured server and dont know whats in it, what are some good steps?

Thanks!

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So you want to find what 'services' this server provides ==> List the servers:

# service --status-all

and this:

# chkconfig --list

Lookup what these commands do.

Then I'd go and see what 'processes' the server has:

# ps aux

I would also see what ports the server is listening on:

# netstat -anp

It's also a good idea to see how many network interfaces are in use (ifconfig -a) and what file systems are mounted (df -h)...

I miss CentOS...

Thank you!

Just to add. To check what packages are installed.

yum list installed

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