The daily logs would be a good place to start, but by default they aren't very verbose.
To troubleshoot SSH Login issues, you should turn on the Shell Module Tweak on the engine, and re-scan.
[HKEY_LOCAL_MACHINE]\SOFTWARE\Foundstone\Foundscan\Tweaks] (for 32-bit host) or
[HKEY_LOCAL_MACHINE]\SOFTWARE\Wow6432Node\Foundstone\Foundscan\Tweaks] (for 64-bit host)
** if the key "Tweaks" doesn't exist, create it. **
Create a new DWORD value called "LogShell" value 'ff'
Re-scan, and examine the logs for any specific errors. If you're still having trouble, then you should open a Service Request.
I hope that helps!