Barracuda Networks SP4 Manuel d'utilisateur télécharger pdf (Page 42)

42 Release and Migration Notes - What´s New with Barracuda NG Network Access Client 2.0 SP6?

connections will either be allowed or denied.

Registry Setting to Prevent OPSWAT Initialization

A configuration flag was added to the registry that prevents the OPSWAT engine from being initialized.

OpswatPreAllocation within HKEY_CURRENT_USER\Software\Phion\phionvpn\settings\ can be set to 1

(default value) in order to save system performance if OPSWAT functions are not needed.

Decreased Default MTU Size

Within the default Virtual Adapter settings, the maximum transmission unit (MTU) size was decreased

to 1390 in order to reduce IP packet fragmentation.

Nagle’s Algorithm Enabled for VPN Sockets

Nagle’s algorithm is now enabled for VPN sockets per default.

Therefore,

HKEY_CURRENT_USER\Software\Phion\phionvpn\settings\[DWORD]nodelay is set to 0. Set this

value to

1 to disable Nagle’s algorithm.

This feature is compliant to the guidelines found at

http://windows.microsoft.com/en-US/windows7/Understanding-security-and-safer-computing.

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Barracuda Networks SP4 Manuel d'utilisateur Page 42