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June 2007 - Posts

Betterment of diagnostics for VPN connection issues in LH

Posted Wednesday, June 13, 2007 1:29 PM by rrasblog
To have a better diagnostics around VPN connection issues in LH, RRAS has introduced a functionality of tagging the VPN connection related events with what is called as "Correlation-ID" (CoID). The relevant event messages are prefixed with "CoID={128 Read More...
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Ports affecting the VPN connectivity

Posted Wednesday, June 13, 2007 12:05 PM by rrasblog
If you are running firewall infront of your RRAS server (i.e. between internet and RRAS) , then following are the relevant ports which needs to be opened on the firewall for VPN connectivity to be successful: a) PPTP tunnel based VPN uses TCP Port number Read More...
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Split Tunnelling using CMAK

Posted Monday, June 11, 2007 7:09 PM by rrasblog
When a VPN connection is established, by default, ‘Use default gateway on remote network’ checkbox is selected. When this checkbox is selected a new default route for the VPN Connection is added and the existing default route gets a higher metric. Result Read More...
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How "Automatic" Tunnel type works in VPN

Posted Thursday, June 07, 2007 12:58 PM by rrasblog
With the various previous blogs, we already know that SSTP (Secure Socket Tunneling Protocol) is a new VPN tunnel type which is added to the list of the already existing tunnel types, PPTP and L2TP. With this addition, there have been some changes in Read More...
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Accessing Network Shares Over a VPN Connection in Windows Vista

Posted Monday, June 04, 2007 5:28 PM by rrasblog
It is not possible to access network shares from a Windows Vista machine over a VPN connection if Net BIOS over TCP (NetBT) is disabled on one of the machines or port 139 is blocked. A fix for this problem is available from Microsoft Support. Customers Read More...
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SSTP: Secure Socket Tunneling Protocol - Cable Guy Article

Posted Sunday, June 03, 2007 12:33 PM by rrasblog
Want to know more about SSTP based VPN, the scenario it is trying to solve, how it works - have a look at this article published by Joseph Davies: http://www.microsoft.com/technet/technetmag/issues/2007/06/CableGuy/default.aspx Cheers, Samir Jain Lead Read More...
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How to prevent SSTP based VPN connections to be dialed out from my network

Posted Friday, June 01, 2007 2:40 PM by rrasblog
So we are back with a post on SSTP - the tunnelling protocol that can help you traverse through NATs and firewalls. SSTP is sure a great way to establish VPN connections in cases where PPTP and L2TP will not work due to the presence of NATs and firewalls. Read More...
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