Date: Fri, 13 Aug 1999 09:03:23 +0100 From: Brian Somers <brian@FreeBSD.org.uk> To: "Andy V. Oleynik" <andyo@prime.net.ua> Cc: Brian Somers <brian@FreeBSD.org.uk>, freebsd-isp@FreeBSD.ORG Subject: Re: Problem with aliasing unregistered IPs on dialup server. Message-ID: <199908130803.JAA00498@keep.lan.Awfulhak.org> In-Reply-To: Your message of "Thu, 12 Aug 1999 23:09:54 %2B0300." <37B32A12.6369EC44@prime.net.ua>
next in thread | previous in thread | raw e-mail | index | archive | help
> Brian Somers wrote: > = > > > > > > Hi everybody, > > > > > > I'm trying to configure dialup ppp server to > > > > > > assign unregistered IP to dialup clients. > > > > > > Before begining this process clients was assigned > > > > > > real IPs per ttyd* basis. All the changes I made > > > > > > was entry for one of the clients in ppp.secret like this: > > > > > > testclient * 10.0.0.1 * > > > > > > to override "set iffaddr" statements in ppp.conf's profiles > > [.....] > > > > Sounds like your Internet gateway doesn't know how to route 10.0.0.1 > > to your ppp server. > > > = > No, it knows. I can ping from client ppp server and other hosts residin= g on > = > the same ethernet in the same subnet can too . Also I can reach 10.0.0.= 1 > client from ppp server > and these hosts. I understand that while ppp-server has direct route to= the > client and > other hosts on the ether have this ppp-server as defaultrouter they can= > reach client. > But hosts from outside this subnet, such as host that is defaultrouter = for > my ppp-server > doesnt know how to reach 10.0.0.0/24 hosts and they sends their repleys= to > their > defaultrouters - checked with tcpdump. And my question was why ppp does= nt > alias the > packets from unregistered networks. I think ppp have to works like nat= d in > this case. > I.e. every packet from unregistered have to be resent to destination by= ppp > with its own addr. > And answers have to be retransmitted to the client. Isnt it? What is th= e > reason of my failure? If you've got the following setup: ------- ------------- -------- 'net---| Box A |-- LAN --| Box B (ppp) |-----| Client | ------- ------------- -------- You need to run the aliasing software on the 'net side of Box A and = make sure that Box A knows how to route to Client via Box B (10/24) = so that it makes everything look like it comes from itself when it = transmits to the 'net and so that it knows what to do with the = replies when it gets them back. My suspicion was that Box A didn't know how to route to Client via = Box B. If Box A can talk directly to Client, and Box A runs either natd or = ppp -alias on it's 'net interface, there should be no problem. > -- > WBW Andy V. Oleynik (When U work in virtual office > prime.net.ua's U have good chance to obtain > system administrator virtual money =C3%o) > +380442448363 -- = Brian <brian@Awfulhak.org> <brian@FreeBSD.org> <http://www.Awfulhak.org> <brian@OpenBSD.org> Don't _EVER_ lose your sense of humour ! <brian@FreeBSD.org.uk> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199908130803.JAA00498>