The history of firewalls is full of terms that label a type of firewall or describe a generation of firewalls. Some of these terms are evasive and even manage to contradict themselves; they may be the result of mixing the research definitions with marketing terminology.

Two key features in SonicOS Enhanced 5.8.1 regarding the mode of deployment of a SonicWALL firewall appliance are: Wire Mode and Tap Mode. The Wired Mode enables you to augment existing firewalls by inserting in a least-intrusive manner a NGFW while the TAP mode allows you to perform traffic inspection and analysis using an out-of-path model.

Using RDP without VPN exposes both RDP servers and clients to various attacks. SSL VPN can represent a simple and convenient way of securing RDP. In this article we have discussed: Why not expose directly to the Internet the RDP server and Why access the RDP server over VPN.