Date: Tue, 20 Nov 2001 22:07:15 -0500 (EST) From: Dru <genisis@istar.ca> To: Thor Legvold <tlegvold@hotmail.com> Cc: <freebsd-questions@FreeBSD.ORG> Subject: Re: Networking questions Message-ID: <20011120220100.M35257-100000@x1-6-00-50-ba-de-36-33.kico1.on.home.com> In-Reply-To: <F64YeD9INmIvijyoLTs0000f15c@hotmail.com>
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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 networking knowledge is severely outdated and lacking in several areas 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
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