COMPUTER NETWORKING

Detailed explanation-1: -Type 1: Packet-Filtering Firewalls As the most “basic” and oldest type of firewall architecture, packet-filtering firewalls create a checkpoint at a traffic router or switch.

Detailed explanation-2: -Which of the following does a router use to determine where packets are forwarded to? Routers use a routing table to determine where network packets are forwarded to. Router access control lists (ACLs) can be configured to increase security and limit traffic, much like a firewall but on the router level.

Detailed explanation-3: -Static Packet Filter The static packet filtering firewall operates only at the network layer (layer 3) of the OSI model and does not differentiate between application protocols. This type of firewall decides whether to accept or deny individual packets, based on examining fields in the packet’s IP and protocol headers.

Detailed explanation-4: -Application Firewall This type of firewall intercepts packets traveling to or from an application and blocks malicious requests based on the specific application information. It disassembles a packet and analyzes its content, including payload, for inconsistencies, invalid or malicious commands.