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DHCP not relaying for VPN client....

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DHCP not relaying for VPN client.... - 6.Apr.2012 9:25:11 PM   
gkochanowsky

 

Posts: 2
Joined: 6.Apr.2012
Status: offline
Greetings,

I am a ForeFront newbie but I have managed to install and almost configure a TMG 2010 two network firewall (internal, external) with VPN. I am able to VPN in all the supported protocols. However when the client lands on the internal network, other machines on the internal network are accessible and pingable using IP address however DNS doesn't appear to work (can't ping or access machines using FQDN even though it does work when done from machines on the internal network). The TMG is configured to use an internal DHCP server for IP addresses and I tried to configure DHCP Relay as described in [http://technet.microsoft.com/en-us/library/cc302605.aspx] but to no avail.

Does anyone know what I am missing or what configuration I may have that is keeping this from working. Any links that have verifiable effectiveness are greatly appreciated.

Gene
Post #: 1
RE: DHCP not relaying for VPN client.... - 12.Apr.2012 2:03:47 PM   
paulo.oliveira

 

Posts: 3472
Joined: 3.Jan.2008
From: Amazon, Brazil
Status: offline
Hi,

I donīt know about TMG (never tested), but on ISA if you follow this guide: http://www.isaserver.org/tutorials/2004dhcprelay.html
And add the below registry key, DHCP relay works great:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RAT\Stingray\Debug\
FWSRV]"FWS_PNP_IPHELPER_QUITE_PERIOD"=dword:000005dc

Note: after adding the registry key, you must restart firewall service.

Regards,
Paulo Oliveira.

_____________________________

Microsoft Premier Field Engineer (PFE)
Blog: http://poliveirasilva.wordpress.com/
Twitter: https://twitter.com/poliveirasilva

(in reply to gkochanowsky)
Post #: 2
RE: DHCP not relaying for VPN client.... - 19.Apr.2012 10:22:27 PM   
gkochanowsky

 

Posts: 2
Joined: 6.Apr.2012
Status: offline
Thanks paulo! That worked. The only thing is that ping appears to be slow (96ms). Perhaps that reflects the speed of my VPN connection.

(in reply to paulo.oliveira)
Post #: 3

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