Re: L2TP remote access VPN disconnecting; PPTP stays connected

From: PJ (pj_at_freemail.lt)
Date: 01/21/05 

Date: Fri, 21 Jan 2005 13:44:50 +0200

Hi,

Have the same problems with ISA 2004 and L2TP/PPTP. May be You found a
solution?

Pavel.

"Bill Stewart" <llib.trawets@yrautromhcnerf.moc> wrote in message
news:uzXjD419EHA.3128@TK2MSFTNGP11.phx.gbl...
> Server side is Windows Server 2003, ISA Server 2004, remote client VPN
> enabled using both PPTP and L2TP/IPSec with a pre-shared key.
>
> Client side is Windows XP SP1 with 818043 NAT-T update installed.
>
> Problem: When I connect with PPTP, the VPN stays connected. I can also
> connect fine with L2TP, but the connection drops unexpectedly after 3-30
> minutes (approx).
>
> I ran RASDIAG from the XP SP2 toolkit, and noticed these lines in the
> RASDIAG.TXT log file:
>
> [3268] 19:28:14:053: SetIoCompletionPortCommon: posting last event for
> port 1
> [1984] 19:33:42:525: WorkerThread: Disconnect event signaled on port:
> VPN4-1
> [1984] 19:33:42:525: OVEVT_DEV_STATECHANGE. pOverlapped = 0x158420
> [1984] 19:33:42:525: d:\nt\net\rras\ras\rasman\rasman\worker.c, 1936:
> Disconnecting port 1, connection 0x1692b8, reason 1
> [1984] 19:33:42:525: Disconnecting Port 0xVPN4-1, reason 1
>
> I have also enabled oakley logging:
>
> 1-08: 19:33:42:655:e6c ISAKMP Header: (V1.0), len = 108
> 1-08: 19:33:42:655:e6c I-COOKIE e3f0202609ff9230
> 1-08: 19:33:42:655:e6c R-COOKIE 00a61d99538a9426
> 1-08: 19:33:42:655:e6c exchange: ISAKMP Informational Exchange
> 1-08: 19:33:42:655:e6c flags: 1 ( encrypted )
> 1-08: 19:33:42:655:e6c next payload: HASH
> 1-08: 19:33:42:655:e6c message ID: d187ade8
> 1-08: 19:33:42:655:e6c processing HASH (Notify/Delete)
> 1-08: 19:34:22:232:e6c ClearFragList
> 1-08: 19:37:22:251:bec Peer List Entry 000A3160
> 1-08: 19:41:07:275:dec Peer List Entry 000A3160
> 1-08: 19:41:07:275:dec Release Encap state
> 1-08: 19:41:07:275:dec Remove PeerListEntry
>
> I am not manually disconnecting this connection. This behavior does not
> occur when I connect with PPTP.
>
> Anyone have any ideas?
>
> Thanks!
>
> --
> Bill Stewart

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