Write the types of firewalls Only names Explain these briefly-00664
This subjective question is related to the book/course
vu cs403 Database Management Systems.
It can also be found in
vu cs403 Mid Term Solved Past Paper No. 6.
Packet filter firewall
It uses a set of rules to determine whether outgoing or incoming data packets are allowed to pass through the firewall.
Circuit level firewall
It is quite similar to the packet filter firewall. It also works on the basis of a set of rules for filtering packets but operates at the transport layer of the OSI Model so has greater functionality.
Application gateway firewall
It operates at application layer of the OSI Model. It uses strong user authentication to verify identity of a host attempting to connect to the network using application layer protocols such us FTP. In contrast to packet filter firewall, it filters the requests rather than packets entering/leaving the network. It can block any outgoing HTTP or FTP requests.
