Date: Mon, 14 Feb 2000 13:50:31 -0500 From: "Crist J. Clark" <cjc@cc942873-a.ewndsr1.nj.home.com> To: Duke Normandin <01031149@3web.net> Cc: cjclark@home.com, freebsd-questions@FreeBSD.org Subject: Re: Routed and public IPs Message-ID: <20000214135031.B40574@cc942873-a.ewndsr1.nj.home.com> In-Reply-To: <00e601bf7712$2f090460$f19ec5d1@webserver>; from 01031149@3web.net on Mon, Feb 14, 2000 at 10:35:19AM -0700 References: <00e601bf7712$2f090460$f19ec5d1@webserver>
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On Mon, Feb 14, 2000 at 10:35:19AM -0700, Duke Normandin wrote: > Although I'm not involved in this thread, directly or indirectly, > I want to thank you for such a great reply. I can't believe you > and Ruslan et al -- I'm green with envy. I've saved this thread > for future reference, however would you mind defining for me (in > laymen's terms) the concept of bridge(4)ing? Something like: > "bridging is using a box to bridge a gap between (public & private > IPs??) or ?? ". I don't want your info to go to waste on this > newbie, so I thought I'd ask. Tia... A bridge is a network device that operates at layer two of the IP stack, the link layer. Hubs and switches are the other most common devices that work at layer two. A bridge does not know anything about IP addresses, and most often, it simply forwards _all_ packets it receives on one interface to the other. However, it is possible to run a filter on the bridge, as was the whole point of the thread you are following. I personally have only used a simple bridge that passes all packets. Some users want two computers (running different OSes) in their offices. There is only one RJ-45 connection coming into the room. Rather than give them each a hub, one computer gets an extra NIC and bridges for the other. As far as the second computer is concerned, its on the same LAN. -- Crist J. Clark cjclark@home.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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