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08.04.2008 at 03:04PM PDT, ID: 23620645
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8.8

Reinstalled ISA 2004 Server Now VPN Clients cannot connect.

Asked by bbrunning in MS Forefront-ISA, SBS Small Business Server, Microsoft Server

Tags: , , ,

I had to reinstalled ISA 2004 on an SBS2k3 server. I then imported a backup of the ISA's configuration to get it back up and running. Now the VPN clients cannot access the server. I've already run the CEICW to make sure SBS correctly noticed the ISA server again. I also ran the Configure remote access wizard in server management. After that I started RRAS back up but I just keep getting client computers to sit on verifying username and password. Then they get error 721 on the client. On the server's Event viewer I get the following:

Source: RemoteAccess
Event ID: 20073
The following error occurred in the Point to Point Protocol module on port: VPN4-4, UserName: <Unauthenticated User>. There are no authentication protocols available for use.

Source: Rasman
Event ID 20209
A connection between the VPN server and the VPN client 72.189.58.130 has been established, but the VPN connection cannot be completed. The most common cause for this is that a firewall or router between the VPN server and the VPN client is not configured to allow Generic Routing Encapsulation (GRE) packets (protocol 47). Verify that the firewalls and routers between your VPN server and the Internet allow GRE packets. Make sure the firewalls and routers on the user's network are also configured to allow GRE packets. If the problem persists, have the user contact the Internet service provider (ISP) to determine whether the ISP might be blocking GRE packets.Start Free Trial
[+][-]08.04.2008 at 04:37PM PDT, ID: 22157122

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[+][-]08.04.2008 at 04:49PM PDT, ID: 22157170

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[+][-]08.04.2008 at 07:14PM PDT, ID: 22157620

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[+][-]08.04.2008 at 07:51PM PDT, ID: 22157770

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[+][-]08.05.2008 at 11:07AM PDT, ID: 22163420

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[+][-]08.05.2008 at 12:01PM PDT, ID: 22163926

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[+][-]08.05.2008 at 11:41PM PDT, ID: 22167626

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[+][-]08.05.2008 at 11:42PM PDT, ID: 22167630

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[+][-]08.06.2008 at 06:01AM PDT, ID: 22169642

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About this solution

Zones: MS Forefront-ISA, SBS Small Business Server, Microsoft Server
Tags: ISA, VPN, ISA VPN Error, SBS 2003
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Solution Provided By: TechSoEasy
Participating Experts: 1
Solution Grade: A
 
 
 
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20081112-EE-VQP-44 / EE_QW_EXPERT_20070906