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I have tried to set up a L2TP site to site VPM using a pre-shared key between my office (TMG 2010) and my home (ISA2006). 
 
I have followed this blog -&gt; <a href="http://www.isaserver.org/tutorials/Creating-VPN-ISA-Server-2006-Firewalls-Main-Branch-Office-Part1html.html" rel="ugc">http://www.isaserver.org/tutorials/Creating-VPN-ISA-Server-2006-Firewalls-Main-Branch-Office-Part1html.html</a>&nbsp; 
 
I cannot get either side to connect. The user account I am using is a Domain account: 
Here are my specs firewall specs: 
 
Office TMG2010 
External IP: 123.124.125.126 
Internal IP range: 192.168.1.0 ~ 192.168.1.255 
user: vpnmain 
domain: Office 
Authentication: L2TP 
pre-shared key: letmein 
 
Home ISA 2006 
External cluster VIP: 99.98.97.96 
NLB members range: 99.98.97.94 ~ 99.98.97.95 
Internal IP range: 192.168.254.0 ~ 192.168.254.255 
user: vpnmain 
domain: Home 
Authentication: L2TP 
pre-shared key: letmein 
 
What am I missing? 
 
 

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I have tried to set up a L2TP site to site VPM using a pre-shared key between my office (TMG 2010) and my home (ISA2006).

I have followed this blog -> http://www.isaserver.org/tutorials/Creating-VPN-ISA-Server-2006-Firewalls-Main-Branch-Office-Part1html.html 

I cannot get either side to connect. The user account I am using is a Domain account:
Here are my specs firewall specs:

Office TMG2010
External IP: 123.124.125.126
Internal IP range: 192.168.1.0 ~ 192.168.1.255
user: vpnmain
domain: Office
Authentication: L2TP 
pre-shared key: letmein

Home ISA 2006
External cluster VIP: 99.98.97.96
NLB members range: 99.98.97.94 ~ 99.98.97.95 
Internal IP range: 192.168.254.0 ~ 192.168.254.255
user: vpnmain
domain: Home
Authentication: L2TP 
pre-shared key: letmein

What am I missing?




ISA2006 to TMG site-to-site VPN L2TP not working

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.

Microsoft Forefront ISA Server

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.

Internet Protocol Security (IPsec) is a protocol suite for secure Internet Protocol (IP) communications by authenticating and encrypting each IP packet of a communication session. IPsec includes protocols for establishing mutual authentication between agents at the beginning of the session and negotiation of cryptographic keys to be used during the session. IPsec can be used in protecting data flows between a pair of hosts (host-to-host), between a pair of security gateways (network-to-network), or between a security gateway and a host (network-to-host). IPsec is an end-to-end security scheme operating in the Internet Layer of the Internet Protocol Suite.