Windows server crashes referencing the Symantec Endpoint Protection (SEP) firewall driver, Teefer.sys. Prior the the crash, there is a reference in the Windows Event Viewer to a crash from the SEP process ccSvcHst.exe.
Network applications may also behave unexpectedly or crash.
Blue Screen of Death (BSOD) BugCheck 1E referencing Teefer.sys
Unexpected termination of ccSvcHst.exe during a combination of high network traffic and high CPU usage leading to memory corruption.