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Re: UDP socket tests useless

From: Jan-Henrik Haukeland
Subject: Re: UDP socket tests useless
Date: 13 Aug 2002 12:44:19 +0200
User-agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Civil Service)

Nils Ohlmeier <address@hidden> writes:

> I just took a quick look into the code of nmap (to look for a
> possible better solution then your fix): sadely they make it in a
> complete other way.  If i understand correct nmap uses raw sockets
> to send out all packets/requests. 

>From what I could see from the nmap code (I didn't look very close) it
does in theory utilize the same test but build instead it's own low
level udp package with 0 data and sends this as a header package.
This is probably what I should do as well, since as you correctly
points out I'm actually sending 1 byte of data which most servers
would react to as a wrong protocol request. On the other hand most
servers should not have any problems with such a request.

> > Or if you would like to give it a try, please do, since I'm quite
> > bussy at the moment :)
> Not to busy to develop a quick fix. Respect.

Well, it wasn't a very nice fix. But that's what happen when your
busy.  I'll try to do it the right way when I get time. Anyway I hope
it solved your problem at least :)

Jan-Henrik Haukeland

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