Re: NMAP : Different interpretation of "filtered" ports depending on -sS or -sT options. Bug ?

[Richard Moore <rich () westpoint ltd uk>]

Martin Mačok wrote:
> Actually, the connect() scan could have problems in telling the
> difference between filtered and closed ports because when ICMP DU/PU
> is received then connect() returns ECONNREFUSED (just like when RST is
> received).

That may be platform dependent, certainly on linux protocol unreachable
etc. are handled fine by connect() and have their own errnos (which
nmap uses correctly).

Cheers

Rich.
--
Richard Moore, Principle Software Engineer,
Westpoint Ltd,
Albion Wharf, 19 Albion Street, Manchester, M1 5LN, England
Tel: +44 161 237 1028
Fax: +44 161 237 1031

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