From owner-freebsd-questions Tue Nov 20 19: 1:18 2001 Delivered-To: freebsd-questions@freebsd.org Received: from mail1.toronto.istar.net (mail1.toronto.istar.net [209.89.75.17]) by hub.freebsd.org (Postfix) with ESMTP id 50DF437B405 for ; Tue, 20 Nov 2001 19:01:15 -0800 (PST) Received: from d226-39-102.home.cgocable.net ([24.226.39.102] helo=x1-6-00-50-ba-de-36-33.kico1.on.home.com) by mail1.toronto.istar.net with esmtp (Exim 2.02 #1) id 166NdW-0004EW-00; Tue, 20 Nov 2001 22:01:19 -0500 Received: from localhost (genisis@localhost) by x1-6-00-50-ba-de-36-33.kico1.on.home.com (8.11.6/8.11.6) with ESMTP id fAL37aQ35420; Tue, 20 Nov 2001 22:07:37 -0500 (EST) (envelope-from genisis@istar.ca) X-Authentication-Warning: x1-6-00-50-ba-de-36-33.kico1.on.home.com: genisis owned process doing -bs Date: Tue, 20 Nov 2001 22:07:15 -0500 (EST) From: Dru X-X-Sender: To: Thor Legvold Cc: Subject: Re: Networking questions In-Reply-To: Message-ID: <20011120220100.M35257-100000@x1-6-00-50-ba-de-36-33.kico1.on.home.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Tue, 20 Nov 2001, Thor Legvold wrote: > While trying to debug my VPN connection, I've come to the conclusion that my > networking knowledge is severely outdated and lacking in several areas > (which is fine, I like learning new stuff). I worked with SunOS, AIX and > NextStep about 10 years ago, did SLIP, but need info especially when it > come's to a lot of the "new" things (tunneling, pptp), but also in regards > to some of the old that I never really got involved in (nat, firewalls). > > I wonder if anyone knows some good links to get a basic overview of > networking concepts and practices. I know what TCP/IP, UDP and such are and > how they work in general, the OSI model etc etc, but I'm thinking of things > like: where does a VPN tunnel fit in a normal network setup - is it > parallell to the existing network(s), do exisiting hosts use aliases (so > each has a regular LAN IP and a VPN IP on the same interface) or what? Does > natd function on the outside, inside or from within a firewall? In a > gatewayed system, where do virtual adapters (tunnels and pptp/ppp) end up > relative to the existing internal LAN and external Internet/WAN? Trying to > get all of this in a clear conceptual framework in my head so I know where > to look to debug this problem I'm having with mpd-netgraph, and to better > understand my own network setup both now and in the future. > > My ISP turns off the NAT system for good tomorrow and allows only VPN > connections from then on (which I still haven't gotten to work), so it might > be a while before I'm able to reply to any messages, but I should manage to > be able to read responses from somewhere. > > Regards, Hi Thor, OK, if you like reading, lots of good basic and technical vpn stuff here to get you started: http://kubarb.phsx.ukans.edu/~tbird/vpn/vpn-general.html There's a tutorial on setting up a vpn over a ppp link on FreeBSD here: http://unix.za.net/gateway/documentation/networking/vpn/fbsd.html Another tutorial here, scarce but with excellent links: http://freebsd.cg.nu/ipsec.html HTH, Dru To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message