Date: Thu, 12 Feb 1998 16:53:24 +0200 (EET) From: Ruslan Ermilov <ru@ucb.crimea.ua> To: patrick@cre8tivegroup.com (Patrick Gardella) Cc: tlt@tltodd.com, freebsd-questions@FreeBSD.ORG Subject: Re: using ipfw to block icq Message-ID: <199802121453.QAA28601@relay.ucb.crimea.ua> In-Reply-To: <XFMail.980212092423.patrick@cre8tivegroup.com> from "Patrick Gardella" at "Feb 12, 98 09:24:23 am"
next in thread | previous in thread | raw e-mail | index | archive | help
Hi! You may use ICQ (and its user-to-user interaction) using natd program. Configure your ICQ client so it is "Behind the firewall" and assign each client a separate portrange (minimum 11 contiguous ports required). Then use natd to directly map this portrange to a proper client (see redirect_port command of natd for details on how it works). Once Patrick Gardella wrote: > I've got the opposite problem. Somewhere ICQ is being blocked for me, but > shouldn't be. > > ICQ sends it's stuff mainly on port 4000. But the app allows you to get around > firewalls and seems to be specifically designed for this. The typical user to > user stuff is supposed to take place between UDP ports 2000 and 4000, although > I've found it uses UDP 1190-1237 (Which is where I was blocked). Don't ask why! > > Patrick > > > On 11-Feb-98 Terry Todd wrote: > > > > Anybody know how to block ICQ traffic? I have ipfw set up and it does > > a fine job of blocking IRC traffic. Now there's new thing called ICQ > > that I'm not sure how to block. I am using my Freebsd system as a > > firewall between a network of windoze systems and the internet. ICQ > > is running on the windoze system. Anybody know how this works? > > > > Thanks, > > Terry Todd > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe questions" in the body of the message > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe questions" in the body of the message > -- Ruslan A. Ermilov System Administrator ru@ucb.crimea.ua United Commercial Bank +380-652-247647 Simferopol, Crimea 2426679 ICQ Network, UIN To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199802121453.QAA28601>