From owner-freebsd-isp Sun Apr 28 20:18:15 1996 Return-Path: owner-isp Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id UAA15902 for isp-outgoing; Sun, 28 Apr 1996 20:18:15 -0700 (PDT) Received: from irbs.irbs.com (irbs.com [199.182.75.129]) by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id UAA15892 for ; Sun, 28 Apr 1996 20:18:08 -0700 (PDT) Received: (from jc@localhost) by irbs.irbs.com (8.7.5/8.6.6) id XAA16018; Sun, 28 Apr 1996 23:16:51 -0400 (EDT) From: John Capo Message-Id: <199604290316.XAA16018@irbs.irbs.com> Subject: Re: FreeBSD PPP for terminal server. To: luiz@mirage.nlink.com.br (Luiz de Barros) Date: Sun, 28 Apr 1996 23:16:51 -0400 (EDT) Cc: freebsd-isp@freebsd.org In-Reply-To: <199604290256.XAA21834@mirage.nlink.com.br> from Luiz de Barros at "Apr 28, 96 11:56:02 pm" X-Mailer: ELM [version 2.4ME+ PL11 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-isp@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Luiz de Barros writes: > I would like to use my freeBSD system as a ppp server for our dial-in > modems connected through a terminal server. The Terminal server would > telnet to freebsd , on which would give the login of the user and init > PPPd. Your terminal server does not do PPP? > Two problems arrised: > 1- How to ensure that only the terminal server will be able to login? > anybody coming from outside world would not be allowed to login. A couple of things come to mind. Use the access list facility in tcp-wrappers. Use the facilities provided by login.access that is part of login. Build a special telnetd that only accepts connections from your domain. In all cases you have to block IP spoofing at your border routers. You should be doing that anyway. > > 2- How to assign Dynamic IP addresses from a range of for example 33 to 49? > Tricky. I have seen some scripts floating around for this. You might check the FreeBSD mail archives. I would be very interested to know how this project comes out. John Capo jc@irbs.com IRBS Engineering FreeBSD Servers and Workstations (954) 792-9551 Unix/Internet Consulting - ISP Solutions