(answer to ping-problem)

Forum: Linux IP NAT Forum
Re: Can NAT do this? (Ennio Porro)
Re: Probably but a little more info may be needed (Bill Harris)
Re: problem with ipnatadm compiling under 2.0.33 (Roberto Favaro)
Re: ipnatadm Binary for glibc-2 (Michael Hasenstein)
Re: I can use your binary but still cannot compile! (Joseph Kwok)
Keywords: compiling ipnatadm, proxy arp, routing
Date: Mon, 04 May 1998 17:45:10 GMT
From: Michael Hasenstein <hasenstein@yahoo.com>

> # ipnatadm -O -i -b -S 1.1.1.1/32 -M 134.109.192.223/32 > > NAT router cannot ping to 134.109.192.223. Is it a limitation > or I am missing some routing information within the NAT router? > But other host can connect to the NAT address by simply adding > a host routing entry without adding any routing information within > the NAT router! It will work if everything is setup properly. Yes, you do need a route for that NAT IP. Routing is done before the address translation happens, so the routing code will use 134.109.192.223. That's how it should be, see the document. Other hosts can connect because their packets will be translated as soon as they arrive so internally the kernel uses 1.1.1.1. If you ping 1.1.1.1 it will work from the router. You should consult the document for operating principles of that NAT code. I hope I didn't get messed up myself and that my explanations are correct, didn't use NAT for some time ;-)