root@gate:~# nmap -sT -O xxx.xxx.xxx.xxx
Starting Nmap 5.00 (
http://nmap.org ) at 2014-12-12 10:14 EET
Interesting ports on xxxx.xxxxxx.xxx.xx (xxx.xxx.xxx.xxx):
Not shown: 991 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp filtered smtp
53/tcp open domain
80/tcp open http
111/tcp open rpcbind
443/tcp open https
2049/tcp open nfs
4899/tcp open radmin
No exact OS matches for host (If you know what OS is running on it, see
http://nmap.org/submit/ ).
TCP/IP fingerprint:
OS:SCAN(V=5.00%D=12/12%OT=21%CT=1%CU=35263%PV=N%DS=1%G=Y%TM=548AA3ED%P=i686
OS:-pc-linux-gnu)SEQ(SP=CC%GCD=1%ISR=CF%TI=Z%CI=Z%II=I%TS=7)OPS(O1=M5ACST11
OS:NW7%O2=M5ACST11NW7%O3=M5ACNNT11NW7%O4=M5ACST11NW7%O5=M5ACST11NW7%O6=M5AC
OS:ST11)WIN(W1=1680%W2=1680%W3=1680%W4=1680%W5=1680%W6=1680)ECN(R=Y%DF=Y%T=
OS:40%W=16B0%O=M5ACNNSNW7%CC=Y%Q=)T1(R=Y%DF=Y%T=40%S=O%A=S+%F=AS%RD=0%Q=)T2
OS:(R=N)T3(R=Y%DF=Y%T=40%W=1680%S=O%A=S+%F=AS%O=M5ACST11NW7%RD=0%Q=)T4(R=Y%
OS:DF=Y%T=40%W=0%S=A%A=Z%F=R%O=%RD=0%Q=)T5(R=Y%DF=Y%T=40%W=0%S=Z%A=S+%F=AR%
OS:O=%RD=0%Q=)T6(R=Y%DF=Y%T=40%W=0%S=A%A=Z%F=R%O=%RD=0%Q=)T7(R=Y%DF=Y%T=40%
OS:W=0%S=Z%A=S+%F=AR%O=%RD=0%Q=)U1(R=Y%DF=N%T=40%IPL=164%UN=0%RIPL=G%RID=G%
OS:RIPCK=G%RUCK=G%RUD=G)IE(R=Y%DFI=N%T=40%CD=S)
Network Distance: 1 hop
OS detection performed. Please report any incorrect results at
http://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 11.47 seconds
root@gate:~#