Date: Wed, 27 Jun 2007 09:45:37 -0700 From: Julian Elischer <julian@elischer.org> To: Alexander Motin <mav@freebsd.org> Cc: freebsd-net@freebsd.org, Ovi <ovi@unixservers.us>, mpd-users@lists.sourceforge.net Subject: Re: Mpd-4.2 released. Message-ID: <46829431.8020500@elischer.org> In-Reply-To: <46825347.1030206@freebsd.org> References: <468135BF.8010407@freebsd.org> <20070626214936.GC79335@zone3000.net> <4681A062.9040009@freebsd.org> <468245F8.1090709@unixservers.us> <46825347.1030206@freebsd.org>
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Alexander Motin wrote: > > Even if pppoe have some DoS weaknesses it also have some protection > mechanisms against it. It's a pity but ng_pppoe originally implements > protocol in a way which does not allow this protection to be effectively > used. ng_pppoe can always be rewritten :-) > > As I have told 4.2 release contains overload protection which should > also help against DoS attacks. I am not sure it will be able to handle > 100Mbit/s flood of PADI requests from broken switch, but should avoid > mpd freeze in such case. > >> When having many users, it is useful to have high availability, so it >> would be nice and useful to setup multiple pppoe servers . I've tried >> that, using a router, connected >> to 2 pppoe servers, and at every pppoe connection, a route was added to >> the router and when user disconnected, the route was deleted from >> router. This is still a buggy implementation, we had problems messing >> up routing table. > > Having several PPPoE servers in one segment is a normal solution > protocol. It is not so efficient now as it could be due to ng_pppoe > implementation problem I have told, but it still should increase > performance and stability. > > What is about routing problems, you just should find good dynamic > routing solution. I have successfully working network with hundred PPPoE > servers and many thousands of users with routing successfully managed by > quagga bgp. > >
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