Firewall Wizards: Re: source port specific port scan

From: Jose Nazario <jose_at_biocserver.BIOC.cwru.edu>
Date: Mon, 15 Oct 2001 11:32:54 -0400 (EDT)

On Fri, 12 Oct 2001, Rich Wilson wrote:

> Does anyone know of a port scanner that allows you to specify the
> source port?

i almost forgot about hping2 and nemesis. nemesis doesn't listen, though,
but in combination with tcpdump (process the dump with perl or awk, for
example) you can construct a simple port scanner. hping2 will listen for
the response. ipsend can also be used.

small shell or perl wrappers around these should make what you want to do
easy.

hope that helps.

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jose nazario jose_at_cwru.edu
PGP: 89 B0 81 DA 5B FD 7E 00 99 C3 B2 CD 48 A0 07 80
PGP key ID 0xFD37F4E5 (pgp.mit.edu)

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Received on Oct 16 2001