Dear experts,
Im behind of ISA 2006 gateway. When I dial to VPN server from my windows XP workstation over PPTP I got user name password verification dialog box and then error 619 port used to this connection was closed. PPTP out bound is open, and which ports do I need to open to connect to VPN. And how to check GRE is enable on ISA 2006.
Thanks,
Pushpe
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