Date: Sun, 6 May 2001 10:46:28 +1200 From: "Juha Saarinen" <juha@saarinen.org> To: "Stephen Montgomery-Smith" <stephen@math.missouri.edu> Cc: "Lauri Laupmaa" <mauri@inspiral.net>, <stable@FreeBSD.ORG> Subject: RE: ISN number prediction ? Message-ID: <KPECIILENDDLPCNIMLOFGEKCCDAA.juha@saarinen.org> In-Reply-To: <3AF4821F.20BC4366@math.missouri.edu>
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:: I that was what it was, but it doesn't seem to be working now.
:: Maybe it needs to know what the OS is in order to figure this out.
:: When I run nmap I get
::
:: No exact OS matches for host .........
::
:: suggesting that nmap cannot figure out any more that it is FreeBSD
:: (probably because of the new TCP software in the kernel).
Same here (against a 4.2-STABLE box):
TCP Sequence Prediction: Class=random positive increments
Difficulty=38177 (Worthy challenge)
No 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:
TSeq(Class=RI%gcd=1%SI=7E12)
TSeq(Class=RI%gcd=1%SI=3CF6)
TSeq(Class=RI%gcd=1%SI=9521)
T1(Resp=Y%DF=Y%W=403D%ACK=S++%Flags=AS%Ops=MNWNNT)
T2(Resp=N)
T3(Resp=Y%DF=Y%W=403D%ACK=S++%Flags=AS%Ops=MNWNNT)
T4(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T5(Resp=Y%DF=N%W=0%ACK=S++%Flags=AR%Ops=)
T6(Resp=Y%DF=N%W=0%ACK=O%Flags=R%Ops=)
T7(Resp=Y%DF=N%W=0%ACK=S%Flags=AR%Ops=)
PU(Resp=Y%DF=N%TOS=0%IPLEN=38%RIPTL=148%RID=E%RIPCK=E%UCK=0%ULEN=134%DAT=E)
(NMAP 2.53)
-- Juha
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