security in sun solaris

[Christian <christian () dnet net id>]

hi, i'm new at solaris, and i want to secure my solaris boxes, i 
recently run nmap on one of my solaris box runing named service under 
SunOS 5.6
Port       State       Service
23/tcp     open        telnet
25/tcp     open        smtp
53/tcp     open        domain
111/tcp    open        sunrpc
256/tcp    open        rap
257/tcp    filtered    set
258/tcp    open        yak-chat
264/tcp    open        bgmp
265/tcp    open        unknown
540/tcp    open        uucp
4045/tcp   open        lockd
6112/tcp   open        dtspc
32771/tcp  open        sometimes-rpc5
32773/tcp  open        sometimes-rpc9
32774/tcp  open        sometimes-rpc11
32775/tcp  open        sometimes-rpc13
32776/tcp  open        sometimes-rpc15

anyone know what this services for? and how turned these off? well, 
except for telnet,smtp and domain of course, and how what program runs 
what service in Solaris? like netstat -a -p in linux...
thanks for the help!

regards,
chris


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