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Default gateway address assignment for VPN clients

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Default gateway address assignment for VPN clients - 8.Jun.2010 1:41:11 AM   
SpeedMaster

 

Posts: 15
Joined: 12.Feb.2007
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Hi!
I'm trying to enable VPN access via PPTP, as long as it should work 'out of the box' - first time doing this. I enabled dynamic address assignment, but what's happening is that VPN clients do get the ip address, but when I run ipconfig on a client PC I get a default gateway equals their own client IP address. Seems to be sort of a loop.
I thought that their initial default gateway would be VPN server's IP address. Apparently it's not. I try to ping the domain controller from the vpn client. Ping is ok by IP address, but the name cannot be resolved. I tried to define a DNS server explicitly on TMG 2010, still no change.
Could please anyone make some suggestion?
Thanks,
Eugene
Post #: 1
RE: Default gateway address assignment for VPN clients - 8.Jun.2010 6:47:55 AM   
Jason Jones

 

Posts: 4663
Joined: 30.Jul.2002
From: United Kingdom
Status: offline
The default gateway setting is normal.

If you want to assign DNS servers (and other DHCP options) you can follow this:

http://technet.microsoft.com/en-us/library/cc302680.aspx

Cheers

JJ

_____________________________

Jason Jones | Forefront MVP | Silversands Ltd
My Blogs: http://blog.msedge.org.uk/ and http://blog.msfirewall.org.uk/

(in reply to SpeedMaster)
Post #: 2
RE: Default gateway address assignment for VPN clients - 20.Jun.2010 12:06:00 AM   
SpeedMaster

 

Posts: 15
Joined: 12.Feb.2007
Status: offline
Thanks for the reply, Jason.
I have enabled DHCP relay agent on TMG Server, following the article, but seems that I still cannot address the server by its name, only by IP address, from the VPN client. The server name is not resolved when I open remote desktop connection on VPN client. Any suggestions what I'm doing wrong?

(in reply to SpeedMaster)
Post #: 3
RE: Default gateway address assignment for VPN clients - 21.Jun.2010 4:55:26 AM   
Jason Jones

 

Posts: 4663
Joined: 30.Jul.2002
From: United Kingdom
Status: offline
What DNS server are the VPN clients getting?

Can you access servers using their FQDN (e.g. computer.internal-domain.com)?

Cheers

JJ

_____________________________

Jason Jones | Forefront MVP | Silversands Ltd
My Blogs: http://blog.msedge.org.uk/ and http://blog.msfirewall.org.uk/

(in reply to SpeedMaster)
Post #: 4
RE: Default gateway address assignment for VPN clients - 21.Jun.2010 6:56:06 AM   
SpeedMaster

 

Posts: 15
Joined: 12.Feb.2007
Status: offline
Oops! It seems that VPN clients do get the correct DNS server address. And I can connect to servers using their FQDN. But is there a way to get access without using the domain suffix? I.e. just type SERVERNAME, instead of SERVERNAME.DOMAIN.COM. My remote PC is not a member of that domain. It's a member of another domain with its own DNS server.

I'll explain why I'm asking. We have partners and we can access one of their servers on their VPN. After I establish VPN connection, I use only server name, without domain suffis to connect to it. I did not do any configurations on my DNS to search for servers on their domain, I just get access without using FQDN. The only difference I can see with ipconfig /all between my and their VPN is that when I connect to their network, I get a WINS server assigned. Might this be the answer? Unfortunately, I cannot talk to their sysadmin to find out how they did this.

(in reply to Jason Jones)
Post #: 5

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