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08.04.2008 at 07:11PM PDT, ID: 23620981
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8.5

SBS 2003 VPN Connection Disconnects After 3 Minutes!

Asked by Flyboy44 in Virtual Private Networking (VPN), SBS Small Business Server, Networking Hardware Firewalls

Tags: , , , , ,

We have a Dell Poweredge 2650 with Small Business Server 2003 Premium installed on it behind a Sonicwall Tele2 network security appliance. Routing and Remote access is configured as well as ISA 2000 on the Poweredge. When I connect to the VPN service on SBS 2003 via my Sonicwall, the connection works perfectly for about 3 minutes and then it disconnects. This occurs when using the VPN (remote desktop) and when I just let the connection sit idle. Here is the connection log from the Sonicwall VPN client:

20:50:56.968 Interface added: 10.0.1.102/255.0.0.0 on VPN "WAN Miniport (PPTP)".
20:51:01.296 My Connections\GroupVPN 10.0.1.0 - RECEIVED<<< ISAKMP OAK INFO *(HASH, NOTIFY:KEEPALIVE_REQUEST)
20:51:01.296 My Connections\GroupVPN 10.0.1.0 - SENDING>>>> ISAKMP OAK INFO *(HASH, NOTIFY:KEEPALIVE_ACK)
20:51:46.828 My Connections\GroupVPN 10.0.1.0 - SENDING>>>> ISAKMP OAK INFO *(HASH, NOTIFY:KEEPALIVE_REQUEST)
20:52:01.156 My Connections\GroupVPN 10.0.1.0 - RECEIVED<<< ISAKMP OAK INFO *(HASH, NOTIFY:KEEPALIVE_REQUEST)
20:52:01.156 My Connections\GroupVPN 10.0.1.0 - SENDING>>>> ISAKMP OAK INFO *(HASH, NOTIFY:KEEPALIVE_ACK)
20:52:46.843 My Connections\GroupVPN 10.0.1.0 - SENDING>>>> ISAKMP OAK INFO *(HASH, NOTIFY:KEEPALIVE_REQUEST)
20:53:01.140 My Connections\GroupVPN 10.0.1.0 - RECEIVED<<< ISAKMP OAK INFO *(HASH, NOTIFY:KEEPALIVE_REQUEST)
20:53:01.156 My Connections\GroupVPN 10.0.1.0 - SENDING>>>> ISAKMP OAK INFO *(HASH, NOTIFY:KEEPALIVE_ACK)
20:53:46.843 My Connections\GroupVPN 10.0.1.0 - SENDING>>>> ISAKMP OAK INFO *(HASH, NOTIFY:KEEPALIVE_REQUEST)
20:54:01.156 My Connections\GroupVPN 10.0.1.0 - RECEIVED<<< ISAKMP OAK INFO *(HASH, DEL)
20:54:01.156 My Connections\GroupVPN 10.0.1.0 - Deleting IPSec SA (OUTBOUND SPI = 2E46A72F INBOUND SPI = FDAABBFF)
20:54:01.156 My Connections\GroupVPN 10.0.1.0 - RECEIVED<<< ISAKMP OAK INFO *(HASH, DEL)
20:54:01.156 My Connections\GroupVPN 10.0.1.0 - Deleting IKE SA (IP ADDR=10.0.1.6)
20:54:01.156    MY COOKIE 2d 74 b6 a1 2e 52 94 a
20:54:01.156    HIS COOKIE 4f 2 69 2f 21 44 c8 91
20:54:39.281  
20:54:39.281 My Connections\GroupVPN 10.0.1.0 - Initiating IKE Phase 1 (IP ADDR=10.0.1.6)
20:54:39.312 My Connections\GroupVPN 10.0.1.0 - SENDING>>>> ISAKMP OAK AG (SA, KE, NON, ID, VID, VID, VID, VID)
20:55:02.781 Interface lost: 10.255.100.221
20:55:02.781 Interface lost: 10.0.1.102

This is happening on all our remote clients, all running Windows XP SP2. We have tried this from multiple remote locations and it still happens. Server's ISP is Cbeyond. The connection to the internet for the server is setup like this:

Server -- Sonicwall --- Cbeyond Cisco IAD2400 ---- Internet

VPN Connection Sequence is like this:

Client -- Cbeyond VPN --- SBS 2003 VPN ---- Server

From what I have read on this site and others, people have tried altering the MTU values to fix this. We followed the directions of many of the message boards but none of them fixed anything. The event viewer on SBS 2003 doesn't show anything related to the VPN having an error. We are perplexed as to what this could be.

Anyone have any ideas, your help will be greatly appreciated.Start Free Trial
[+][-]08.04.2008 at 07:23PM PDT, ID: 22157651

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[+][-]08.04.2008 at 09:17PM PDT, ID: 22158110

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[+][-]08.05.2008 at 06:38AM PDT, ID: 22160713

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[+][-]08.05.2008 at 06:57AM PDT, ID: 22160905

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[+][-]08.05.2008 at 07:19AM PDT, ID: 22161125

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[+][-]08.05.2008 at 07:27AM PDT, ID: 22161220

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[+][-]08.05.2008 at 07:38AM PDT, ID: 22161339

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[+][-]08.05.2008 at 07:43AM PDT, ID: 22161386

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[+][-]08.05.2008 at 07:49AM PDT, ID: 22161451

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[+][-]08.05.2008 at 08:21AM PDT, ID: 22161813

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About this solution

Zones: Virtual Private Networking (VPN), SBS Small Business Server, Networking Hardware Firewalls
Tags: Microsoft, Small Business Server 2003, Installed Behind a Sonicwall Tele2, ISA Server 2000 installed., SonicWall, Tele2, Firmware Version 6.3
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Solution Provided By: RobWill
Participating Experts: 2
Solution Grade: A
 
 
[+][-]08.05.2008 at 09:59AM PDT, ID: 22162821

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[+][-]08.05.2008 at 12:41PM PDT, ID: 22164363

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[+][-]08.05.2008 at 02:59PM PDT, ID: 22165555

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[+][-]08.05.2008 at 03:02PM PDT, ID: 22165565

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[+][-]08.05.2008 at 05:15PM PDT, ID: 22166214

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