Date: Fri, 31 Aug 2001 12:39:45 -0700 From: "Jon O ." <jono@microshaft.org> To: Not Going to Tell You <luckywolf19@hotmail.com> Cc: security@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG Subject: Re: Possible New Security Tool For FreeBSD, Need Your Help. Message-ID: <20010831123945.E42488@networkcommand.com> In-Reply-To: <F2216sKBEr8pkpLkTgb00001213@hotmail.com>; from luckywolf19@hotmail.com on Fri, Aug 31, 2001 at 07:33:51PM %2B0000 References: <F2216sKBEr8pkpLkTgb00001213@hotmail.com>
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I already have this ported to FreeBSD. It uses libpcap to watch for syn packets. The original is called cd00r.c and is available here: http://www.phenoelit.de/fr/tools.html My FreeBSD port is available if you send an email, I've got to dig it up... On 31-Aug-2001, Not Going to Tell You wrote: > Sorry for the blank e-mail. > > I have an idea, maybe you either know if it is already been done or you can > help me write this software: > > What if I would scan 5 ports in a defined order, within a define period of > time on my remote box. A program on the box would recognize these 5 port > scans as a "Key" from a remote user to open a port or to activate another > software. > > Why would this be good? > I could close all the ports on my box except those needed to provide a > service (i.e. port 80), however, how can I remote manage it? So then I would > have to open a sshd port also. But this leads to a potential security > problem when scanned by a hacker. So, what if I had a program that sent a > type of "Key" to the box and the box recognized that the key sequence order > was from me, then opened the sshd port. After I was finished with the sshd > session, I would run another program to close the port behind me? > > Any thoughts and help is welcomed. > > Lucky > > _________________________________________________________________ > Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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