I just tried to nmap my P800 and here's what I got.
(I ran nmap -O)
Interesting ports on m213-101-169-196.swipnet.se (my-ip-cut-out):
(The 1595 ports scanned but not shown below are in state: closed)
Port State Service
135/tcp filtered loc-srv
136/tcp filtered profile
137/tcp filtered netbios-ns
138/tcp filtered netbios-dgm
139/tcp filtered netbios-ssn
445/tcp filtered microsoft-ds
Too many fingerprints match this host for me to give an accurate OS guess
Nmap run completed -- 1 IP address (1 host up) scanned in 628 seconds
triton:/home/jl/dl/nmap-3.00$