Hi there,
I am having some trouble with a PPTP VPN service set up in ISA Server 2006 EE.
Directly from the external interface of the ISA the client can connect, but from the Internet they cannot, and they see a 721 error (remote computer did not respond) after the user enters credentials and the verifying username and password dialog box shows up, In logging, in ISA Server Management, there are PPTP protocols being logged, the trend being: 0x0_Error_success, 0x0_Error_Success and then 0x80074e24 FWX_E_Connection_Killed, 0x80074e24 FWX_E_Connection_Killed.
Can anyone help me? I am assured the external firewall allows protocols 1723 PPTP, HTTP, HTTPS at least.
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