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I meant to say it had nothing to do with the VPN setup, which was fine. &nbsp;(I was also having POP3 mail server problems, also caused by the same thing.)
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I meant to say it had nothing to do with the VPN setup, which was fine.  (I was also having POP3 mail server problems, also caused by the same thing.)

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The listening-on-too-many ports broke my VPN, broke my POP3 mail server, and caused general flakiness all around. &nbsp;Including a bunch of 14198 no-socket errors in the event log which would freeze the whole server. &nbsp;Now everything is fixed.
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The listening-on-too-many ports broke my VPN, broke my POP3 mail server, and caused general flakiness all around.  Including a bunch of 14198 no-socket errors in the event log which would freeze the whole server.  Now everything is fixed.

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Running ISA 2004 with sp3 on server 2000, sp4.<br />
<br />
VPN was working fine.<br />
<br />
Suddenly, all outside clients get an &quot;error 651...modem error&quot; when trying to connect using the same connection string they were always using.<br />
<br />
I tried disabling/enabling VPN in ISA2004 and rebooting, but that did nothing.<br />
<br />
Any ideas would be GREATLY appreciated.<br />
<br />
Thanks.
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Running ISA 2004 with sp3 on server 2000, sp4.

VPN was working fine.

Suddenly, all outside clients get an "error 651...modem error" when trying to connect using the same connection string they were always using.

I tried disabling/enabling VPN in ISA2004 and rebooting, but that did nothing.

Any ideas would be GREATLY appreciated.

Thanks.

ISA 2004  VPN   error 651 client connect

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.