COMPUTER THREATS SECURITY
WHAT IS A FIREWALL IN NETWORK SECURITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Packet filter firewall
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Stateful firewall
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Circuit Level Gateway
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Application Level Gateway
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Detailed explanation-1: -Application gateway firewalls operate at the application layer (Layer 7) of the OSI model. They filter access based on application definitions. Application definitions can include not only port numbers but also specific application information like acceptable HTTP verbs.
Detailed explanation-2: -The services and functions of an application layer gateway are delivered by F5 Advanced Web Application Firewall (Advanced WAF).
Detailed explanation-3: -Circuit-level firewalls conceal the details of the protected network from the external traffic, which is helpful for interdicting access to impostors. Circuit-level gateways are relatively inexpensive and have the advantage of hiding information about the private network they protect.