Sanity check

[efef]

The Activity Center in Windows reports anti-virus state & windows update states
For specific VPN connections it has added value if the Windows host is up2date before the client connects.
We need to discuss the details further.

[rozmansi]

The client should programmatically check, if:

• Automatic updates are enabled. Checking if the system is truly up-to-date would be too error prone.
• Anti-virus real-time scanning is enabled.

Both checks should be implemented querying built-in Windows Security centre.

Should any of the checks fail, client would refuse to connect to the "institute access", while still allowing "internet access".

A periodic check should be introduced to disconnect the client should security checks fail at later time.