Saturday, November 27, 2010

Frustrated with Microsoft Forefront TMG (Threat Management Gateway)

FOREFRONT TMG Service keeps shutting down every 2 to 3 minutes and takes around a minute to start again...

The following are the traces found on the event log...


The Firewall service stopped because an application filter module C:\Program Files\Microsoft Forefront Threat Management Gateway\wspsrv.exe generated an exception code C0000005 in address 000000013F4CBADC when function CompleteAsyncIO was called. To resolve this error, remove recently installed application filters and restart the service.

Faulting application name: wspsrv.exe, version: 7.0.9027.410, time stamp: 0x4cb45915
Faulting module name: wspsrv.exe, version: 7.0.9027.410, time stamp: 0x4cb45915
Exception code: 0xc0000005
Fault offset: 0x00000000000dbadc
Faulting process id: 0x6f0
Faulting application start time: 0x01cb8e1579fe65f9
Faulting application path: C:\Program Files\Microsoft Forefront Threat Management Gateway\wspsrv.exe
Faulting module path: C:\Program Files\Microsoft Forefront Threat Management Gateway\wspsrv.exe
Report Id: d7c45149-fa08-11df-967f-
0022b0e5afcd

The Microsoft Forefront TMG Firewall service terminated unexpectedly. It has done this 25 time(s).

Schannel : The following fatal alert was received: 48.

Yeah,so I've not yet been able to figure out the actual cause although I've tried the following stuff..

  1. Disabled logging
  2. Disabled URL Filtering
  3. Installed SP1 for TMG
  4. Installed Update 2 which comes with a few hotfixes
  5. Checked the proxy chain...only the default chain is left
  6. Changed the web proxy port
Inspite of all this,no results yet....Still figuring it out...
 
Update: I think I’ve Found the solution…it was due to multiple services in the firewall using the SSL port. I disabled SSTP and it worked.
But,I’m not satisfied with it yet. I wish I could run multiple apps on port no 443…whoever invented ports should’ve thought better…. Smile

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Godwin Sam Josh is a Microsoft Professional working on almost all Microsoft Technologies.He currently runs his own company called GloriaTech (http://gloriatech.com). He is mainly into providing Mobile and Web solutions using Microsoft Technologies.Godwin also provides training and speaks at various conferences.