The Application Layer Firewalls inspect traffic through the ________ layer(s) of the TCP/IP model and up to and including the ________ layer.
The Application Layer Firewalls inspect traffic through the ________ layer(s) of the TCP/IP model and up to and including the ________ layer.
Application Layer Firewalls inspect traffic from the upper layers of the TCP/IP model, encompassing the Application layer and potentially the layers immediately below it. The TCP/IP model consists of four layers: Application, Transport, Internet, and Network Access. The term 'upper layers' typically refers to the Application and Transport layers, which involve more complex protocols and data handling compared to the 'lower layers.' Therefore, 'upper' to 'Application' is the correct answer.
A is correct. The question is what layers it's working on and the answer is from the lower layers up to and including application layer(all layers). If you tink D is correct maybe you misunderstood the question? It's not asking if Application layer is upper level or lower level.
TCP/IP model has 4 layers (Top to bottom) unlike OSI 7 layers. Application Transport Internet Network access I think the current answer is worng. Any suggestions, guys?
The lower layer includes the internet layer. so upper layer inspection begins only after the packet filtering (src/dest/service/action) so the answer is correct.
A is Correct The concept of Application Firewall is very well explained in CCSA book page 26. "Application Layer Firewalls inspect traffic through the lower layers of the TCP/IP model and up to and including the Application layer. They are usually implemented through software running on a host or stand-alone network hardware and are used in conjunction with Packet Filtering"
Could you tell me where can i find the book. Tnx
A is correct, page 26 CCSA Guide
Agree should be D, Application is on Top of the stack
It is actually a direct quote from the Application Layer Firewall section in the courseware manual.