I'm new to linux and I'm tying to make my box as secure as I can......I ran nmap against my ip and got this result..
(The 1597 ports scanned but not shown below are in state: closed)
Port State Service
111/tcp open sunrpc
631/tcp open ipp
6000/tcp open X11
10000/tcp open snet-sensor-mgmt

I also ran an online scan at http://scan.sygatetech.com and got these results......
web port 80 closed
ident port 113 closed
location service port 135 closed
These were the only ports that wern't stealthed according to their scan.

I have no idea what sunrpc, ipp, x11 and snet-sennsor-mgmt are.
How bad is this? and what can I do to make it more secure?