Hi all, when people say firewalls can check down to application level, does this mean by port number or by type of application, as I thought port numbers are generally related to an application, in this case wont an access list do the same job ?
An application layer firewall will usually look much deeper into the packet than a simple access list will. For example a properly configured application layer firewall may filter out traffic masqurading as legitimate traffic by use of a well known port. Back channel traffic can essentially be 'tunneled' over port 80 if your access list allows it. I can set up ssh to use port 80 to connect if the server is set up for it. A good application firewall should detect that ssh is not a valid application for port 80 and drop it.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
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