Nmap Development: Re: Windows Nmap Port 0 problem

[kx <kxmail () gmail com>]

Looks like we just need to implement error handling similar to the -g option

> nmap -sT -g0 192.168.1.1
WARNING: a source port of zero may not work on all systems.
WARNING:  -g is incompatible with the default connect() scan (-sT).
Use a raw scan such as -sS if you want to set the source port.

On 4/2/07, kx <kxmail () gmail com> wrote:
> Looks like our use of port 0 with connect ist verboten on Windows. I
> would think we could use --send-eth to force Windows to use raw
> ethernet so we could build our own headers, but it doesn't seem to
> work. Honestly, I don't know the code well enough yet to know if nmap
> has its own TCP connect stack, but it would be nice.
>
> I am not sure of good patch yet, I will sleep on it.
>
> Cheers,
>       kx
>
> From the MSDN: http://msdn2.microsoft.com/en-us/library/ms740668.aspx
>
> WSAEADDRNOTAVAIL
> 10049
>
> Cannot assign requested address.
>    The requested address is not valid in its context. This normally
> results from an attempt to bind to an address that is not valid for
> the local computer. This can also result from connect, sendto,
> WSAConnect, WSAJoinLeaf, or WSASendTo when the remote address or port
> is not valid for a remote computer (for example, address or port 0).
>
> On 4/2/07, David Matousek <david () matousec com> wrote:
> > Hi,
> >
> > running "nmap -P0 -p0 -sT 1.2.3.4" on Windows machines (tested on 2000 and 2003 with Nmap 4.11
> > and 2000 with Nmap 4.21ALPHA4) causes some strange reports like
> >
> > "Strange read error from 1.2.3.4 (10049 - 'Unknown error'): No such file or directory"
> >
> > 1.2.3.4 can be any IP or hostname
> >
> > If any other port is used instead of 0, it works fine, if P0 is not specified, it appears only if
> > the machine is alive, if -sT is not specified, it works fine.
> >
> > Regards,
> >
> > --
> > David Matousek
> >
> > Founder and Chief Representative of Matousec - Transparent security
> > http://www.matousec.com/
> >
> > _______________________________________________
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> > http://cgi.insecure.org/mailman/listinfo/nmap-dev
> > Archived at http://SecLists.Org
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