Re: DNS and NetBIOS names not resolving over a PPTP VPN using RRAS

<Nonapeptide@xxxxxxxxx> wrote in message
news:c2fd66e1-4161-449b-b2c5-13172b3958e6@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Let me see if I understand the situation correctly. Supposedly,
whatever DNS and WINS wettings are on the VPN server will be inherited
by all VPN clients.

[Phil] No.

What if the VPN server has more than one network
card?

[Phil] Not relevant

Which interface will the information be inherited from?

[Phil] It is not "inherited". The client get its config from DHCP combined
with the DHCP Relay Agent.

connectoid is a CMAK creation. I'm quickly becoming less and less
enchanted with CMAK. Moving on... I created a new VPN connection the

[Phil] Never used CMAK, was never interested in it,..so I can't help you
with that.

Here's what puzzles me. I have a separate DHCP server on the remote
network. I set up RRAS with the relay agent turned on. My DHCP server
shows that the RRAS server likes to grab 9 DHCP leases at a time.

[Phil] Normal. You probably have 8 RRAS ports (probably 4 PPTP & 4 L2TP)
plus one for the RRAS "internal" interface which gives you 9.

IP address that is definitely NOT my VPN server.

[Phil] Not supposed to be

The IP address is acually one of the 9 that RRAS server too from DHCP.

[Phil] Supposed to be

the DHCP relay agent. I checked and noticed two interfaces in the
relay agent console; "Local Area Connection" and "Internal".

[Phil] Supposed to be that way. This is probably the Root of all your
trouble. I think for the DHCP Relay Agent to work correctly it needs to be
set to Local Area Connection because that is the interface that "faces" the
DHCP Server that the agent needs to do all of its "agent-ing" with. But I
could be wrong,...try that first, if it doesn't work set it to "internal".

second is a "PPP adapter RAS Server (Dial in) Interface" and it seems
to be using one of the 9 DHCP addresses that it got from the DHCP
server. Okay, so should that interface have DNS/WINS info put in it?

[Phil] No. Supposed to be *left alone*

Flustered, I turned off the DHCP relay agent,

[Phil] Turn it back on

made a static pool of
addresses and retried. Same symptoms. The PPP adapter uses the first
IP in the static pool, client machines grab up the rest and no DNS or
NetBIOS is resolving over the VPN. Argh.

[Phil] Get rid of the Pool

Should I install DNS and WINS on the VPN server?

[Phil] No. I believe the Root of your problem was the interface that the
DHCP Relay Agent was associated with. It is really fairly
simple,...correctly configure the DHCP Relay Agent,...and the Clients get
the same IP Config from the same DHCP Scope as all the other machines on the
same IP segment on the LAN,...that's it,..it's that simple,...so the more
complex your "solution", the less likely it is the correct solution.

The DHCP Relay Agent is not required the get an IP#,...you can get that
without the Agent. But you need the Agent to get DHCP Options (like WINS,
DNS, etc). Without the Agent all you get is the IP#.

--
Phillip Windell
www.wandtv.com

The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------


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Relevant Pages

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