From the course: Firewall Administration Essential Training
Join today to access over 24,900 courses taught by industry experts.
Application firewall and next-generation firewall (NGFW)
From the course: Firewall Administration Essential Training
Application firewall and next-generation firewall (NGFW)
- [Instructor] The next type of firewall that we need to discuss is the application firewall. As the name implies, application layer firewalls work at the application layer or that is the Layer 7 of the OSI model. So what exactly do they do? Application firewalls follow application-specific rules and policies so as to determine which traffic will be allowed to pass. It conducts deep packet inspection and incoming traffic, checking the packet's contents and headers. It does this source to ensure that only valid data exists at the application level before allowing the traffic to pass through. For example, application firewalls can check the traffic on applications like HTTP for connecting to the web or the internet, protecting the network against application level attacks such as SQL injection, cross site scripting and command injection. This type of application firewall is known as Web Application Firewalls or WAFs. There's also database firewalls which protects databases and email…
Practice while you learn with exercise files
Download the files the instructor uses to teach the course. Follow along and learn by watching, listening and practicing.
Download courses and learn on the go
Watch courses on your mobile device without an internet connection. Download courses using your iOS or Android LinkedIn Learning app.