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one of my clients is behind an ISA server and he wants to connect to my vpn; once he connects, he gets back an error like 'Error (167) Unable to establish data tunnel (udp traffic is probably blocked)': what should I suggest to him in order to help to connect to my vpn?

What are protocol/ports used by vpn client?


[Updated on: Fri, 18 February 2005 17:37]


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open tcp/udp4090 and ur fine

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