# nmap (V. 2.54BETA22) scan initiated Tue Apr 24 12:32:01 2001. Warning: OS detection will be MUCH less reliable because we did not find at least 1 open and 1 closed TCP port 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 (202.186.13.248): (The 1540 ports scanned but not shown below are in state: filtered) Port State Service 80/tcp open http 443/tcp open https No exact OS matches for host (test conditions non-ideal). TCP/IP fingerprint: SInfo(V=2.54BETA22%P=i386-unknown-freebsd4.0%D=4/24%Time=3AE5ACAA%O=80%C=-1) T1(Resp=Y%DF=Y%W=2017%ACK=S++%Flags=AS%Ops=M) TSeq(Class=TD%gcd=1%SI=1%IPID=BI%TS=U) T2(Resp=N) T1(Resp=Y%DF=Y%W=2017%ACK=S++%Flags=AS%Ops=M) T3(Resp=N) T2(Resp=N) T4(Resp=N) T3(Resp=N) T5(Resp=N) T4(Resp=N) T6(Resp=N) T5(Resp=N) T7(Resp=N) T6(Resp=N) PU(Resp=N) T7(Resp=N) PU(Resp=N) # Nmap run completed at Tue Apr 24 12:41:14 2001 -- 1 IP address (1 host up) scanned in 553 seconds