07-18-2008, 02:59 PM
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 Re: Linux PPP Null Modem Connection
pavelv writes:
> rcvd [IPCP ConfReq id=0x2 ]
> sent [IPCP ConfAck id=0x2 ]
> rcvd [IPCP ConfAck id=0x2 ]
> Cannot determine ethernet address for proxy ARP
> local* IP address 192.168.1.1
> remote IP address 192.168.1.2
Those log messages look highly unlikely to me. They show the daemon
negotiating one set of addresses and then using a completely different
set.
How did you capture these logs and post them? Did you paste them
together from different files?
> After the connection was established I could ping 192.168.1.1. from
> the client
> and 192.168.1.2 from the server.
It sounds like the PPP link itself works.
> But was not able to ping any other
> address
> and could not go to the Internet from client.
That's because you have non-routable addresses. If you don't have
multiple routable IP addresses from your ISP, then you're going to
need to set up a NAT somewhere.
> Probably the message on server:
> Cannot determine ethernet address for proxy ARP
> which I have received might describe the problem?
No. That describes a relatively minor misconfiguration on the server
side. You specified "proxyarp" for the server configuration, but the
address of the client (192.168.1.2) is not in the same subnet as any
broadcast-type (Ethernet) interface that you have configured. There's
thus no way to do proxy ARP for that address.
If you want proxy ARP for 192.168.1.2 to work, you'll need to have an
appropriate 192.168.x.x network set up.
The reason you can't get to the Internet, though, is the lack of a
configured NAT.
--
James Carlson, Solaris Networking
Sun Microsystems / 35 Network Drive 71.232W Vox +1 781 442 2084
MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677
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