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Cannot retrieve contributors at this time
Starting nmap V. 2.54BETA3 ( www.insecure.org/nmap/ )
Insufficient responses for TCP sequencing (3), OS detection may be less accurate
Insufficient responses for TCP sequencing (2), OS detection may be less accurate
Interesting ports on ip-216-23-50-173.adsl.one.net (216.23.50.173):
(The 2 ports scanned but not shown below are in state: closed)
Port State Service
23/tcp filtered telnet
25/tcp open smtp
80/tcp open http
TCP Sequence Prediction: Class=random positive increments
Difficulty=9250 (Worthy challenge)
Aggressive OS guesses: Windows 2000 RC1 through final release (97%), Windows Millenium Edition v4.90.3000 (97%), FreeBSD 3.2-STABLE (97%), MS Windows2000 Professional RC1/W2K Advance Server Beta3 (95%), Windows NT 5 Beta2 or Beta3 (93%), FreeBSD 2.2.1 - 4.1 (92%), Windows 2000 Professional, Build 2183 (RC3) (90%), Windows NT4 / Win95 / Win98 (90%)
No exact OS matches for host (If you know what OS is running on it, see http://www.insecure.org/cgi-bin/nmap-submit.cgi).
TCP/IP fingerprint:
T1(Resp=Y%DF=Y%W=402E%ACK=S++%Flags=AS%Ops=MNWNNT)
TSeq(Class=RI%gcd=1%SI=2422)
T2(Resp=Y%DF=N%W=0%ACK=S%Flags=AR%Ops=)
T1(Resp=Y%DF=Y%W=402E%ACK=S++%Flags=AS%Ops=MNWNNT)
T3(Resp=Y%DF=Y%W=402E%ACK=S++%Flags=AS%Ops=MNWNNT)
T2(Resp=Y%DF=N%W=0%ACK=S%Flags=AR%Ops=)
T4(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T3(Resp=Y%DF=Y%W=402E%ACK=S++%Flags=AS%Ops=MNWNNT)
T5(Resp=Y%DF=N%W=0%ACK=S++%Flags=AR%Ops=)
T4(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T6(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T5(Resp=Y%DF=N%W=0%ACK=S++%Flags=AR%Ops=)
T7(Resp=N)
T6(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
PU(Resp=Y%DF=N%TOS=0%IPLEN=38%RIPTL=148%RID=E%RIPCK=E%UCK=F%ULEN=134%DAT=E)
T7(Resp=N)
PU(Resp=Y%DF=N%TOS=0%IPLEN=38%RIPTL=148%RID=E%RIPCK=E%UCK=F%ULEN=134%DAT=E)
Nmap run completed -- 1 IP address (1 host up) scanned in 16 seconds