There is a known issue with SISIPSNetFilter.sys in the 5.2.9 MP2 release of the SCSP agent (driver version 5.2.9.5)

This issue may cause systems running the 5.2.9.5 version of SISIPSNetFilter.sys to unexpectedly reboot.

To check the version of SISIPSNetfilter.sys that is loaded and running, go to:
     Start –> Computer –> Properties
     In the System Window, go to Device Manager
     Enable View – Show hidden devices menu
     Browse to Non-Plug and Play Drivers
     Go to SISIPSNetfilter- Properties – Driver – Driver Details
     Note the File Version

Upgrade to the SCSP 5.2.9 MP3 agent or later (SISIPSNetFilter.sys 5.2.9.6 or higher)

Applies To

All versions of Windows running the SCSP 5.2.9 MP2 agent