bt ~ # nmap -O 192.168.2.100

Starting Nmap 4.20 ( http://insecure.org ) at 2007-10-05 16:47 GMT
Interesting ports on 192.168.2.100:
Not shown: 1691 filtered ports
PORT     STATE  SERVICE
21/tcp   open   ftp
139/tcp  open   netbios-ssn
445/tcp  open   microsoft-ds
4662/tcp closed edonkey
5800/tcp open   vnc-http
5900/tcp open   vnc
MAC Address: 00:11:09:87:B7:96 (Micro-Star International)
Device type: general purpose|web proxy
Running (JUST GUESSING) : Microsoft Windows NT/2K/XP|2003/.NET (88%), Blue Coat SGOS (86%), IBM AIX 4.X (86%)
Aggressive OS guesses: Microsoft Windows XP SP2 (88%), Microsoft Windows 2003 Server or XP SP2 (87%), Microsoft Windows XP Pro SP2 (87%), BlueCoat SG4 (86%), IBM AIX 4.3.2.0-4.3.3.0 on an IBM RS/* (86%), Microsoft Windows XP Home Edition (English) SP2 (86%)
No exact OS matches for host (test conditions non-ideal).
Network Distance: 1 hop

OS detection performed. Please report any incorrect results at http://insecure.org/nmap/submit/ .
Nmap finished: 1 IP address (1 host up) scanned in 49.760 seconds
bt ~ # nmap -O 192.168.2.109

Starting Nmap 4.20 ( http://insecure.org ) at 2007-10-05 16:48 GMT
caught SIGINT signal, cleaning up
bt ~ # nmap -O 192.168.2.2

Starting Nmap 4.20 ( http://insecure.org ) at 2007-10-05 16:55 GMT
Interesting ports on 192.168.2.2:
Not shown: 1694 closed ports
PORT   STATE SERVICE
23/tcp open  telnet
53/tcp open  domain
80/tcp open  http
MAC Address: 00:14:BF:72:E4:74 (Cisco-Linksys)
Device type: WAP|general purpose
Running: Linux 2.4.X
OS details: Linksys Linux 2.4.30 (X86), or Linksys WRT54G WAP running DD-WRT Linux kernel 2.4.34-pre2
Uptime: 0.368 days (since Fri Oct  5 08:05:09 2007)
Network Distance: 1 hop

OS detection performed. Please report any incorrect results at http://insecure.org/nmap/submit/ .
Nmap finished: 1 IP address (1 host up) scanned in 17.263 seconds
bt ~ # ping 192.168.2.109
PING 192.168.2.109 (192.168.2.109) 56(84) bytes of data.