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Site-To-Site L2TP VPN Issue

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Site-To-Site L2TP VPN Issue - 10.Mar.2011 6:27:12 AM   


Posts: 1
Joined: 10.Mar.2011
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dear All
i need a help with my VPN connection between main office and branch office. we have 3 branch offices and all connected to the main office by ISA site-to-site vpn.
the issue is 2 of these connections keep dropping and when you try to connect manually you recive the following error
"A Demand Dial connection to the remote interface SINoffice on port VPN2-102 was successfully initiated but failed to complete successfully because of the following error: The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer."

the issue is also this connection some times connected without any issues and also i have one branch office connecting without any issues.

so i dont know is it a configuration issue or network issue.

thanks for help
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