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seen Feb 7 '13 at 5:26

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answered One way audio on SIP phone on one call direction.. where to look next?
Aug
9
answered Barring connections if VPN is down
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9
answered Intermittently failing PPTP VPN connections
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answered Multiple GRE NAT router
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answered Multiple VPN Connections, One IP?
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revised Basic subnetting question
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answered Server 2003/ NAT server 2003 IP mapping issue
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accepted How Does VPN Passthrough Actually Work?
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answered How Does VPN Passthrough Actually Work?
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25
comment How Does VPN Passthrough Actually Work?
thanks but this doesn't answer my question. As I said I know about NAT traversal and this is for IPsec which this explains. I want to know how it works with PPTP. All that tells me is to enable the helpers, what do they actually do? that is what I want to find out.