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PTPP Passthrough

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muckermucker

muckermucker

IS-IT--Management
Apr 12, 2009
64
AU
Seen a few people lately with VPN issues behind a NAT. I always wondered why I can only make one PTPP connection from behind a NAT. I knew it had something to do with GRE but couldn't figure out why. Honestly, this took me ages to find but I finally found this PPTP Passthrough article which explains the behaviour. Thought I'd share it here!
 
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