For many years, security monitoring relied on gathering data from layer 4 of the OSI model through such data types as NetFlow. Because layer 4 data dealt with the transport layer, it isn't the most ...

Listen carefully. The top level of the OSI Reference Model and the IETF protocol stack is the application layer. The application layer, however, doesn’t do applications. It provides services such as ...

The latest Internet defense technology – deep packet inspection firewalls – is being touted as the best line of defense against worms that can sneak past earlier technology to wreak havoc in corporate ...

A hot new trend in firewalls is the application-layer firewall, sometimes called an application shield. Although the attack sequences we used in this roundup could be described as “application layer” ...

Im running WinXP, and every once and awhile "Application Layer Gateway Service" will try to connect to the internet. My firewall then stops this. What I want to know is what this is, and why it is ...

There’s a whole group of vendors looking to ease the installation of IP VPNs by supporting application layer technology. Companies such as Neoteris, NetSilica and Netilla Networks (the author of this ...

As we have said many times before, threat actors are always looking for ways to improve on their attack strategies. This nefarious behavior is clearly seen in the ways attackers are utilizing ...

Whether it’s wired or wireless, most data communications today happens by way of packets of information travelling over one or more networks. But before these networks can work together, though, they ...