Hi,
You should first run a port scanner such as NMAP (
http://www.insecure.org/nmap) so you can check which ports are active. Then you can run a Vulnerability Scanner such as Nessus (
http://www.nessus.org) so you check if those active services are secure, if the software versions are free of bugs and vulnerabilities.
To remove the services you shoud edit /etc/inetd.conf. Comment with a # the lines with services you don't want active.
I hope I helped!
CYA,
-Ronaldo
Computer Security Trainee, IBM Brazil