COMPUTER NETWORKING

Detailed explanation-1: -A stateless firewall is the most basic kind-it’s basically a packet filter that operates on OSI layers 3 and 4. This is the most basic type of network perimeter firewall. Static packet filtering is a process that relies on the use of access control lists, or ACLs.

Detailed explanation-2: -Stateless Firewall Stateless firewalls are also a type of packet filtering firewall operating on Layer 3 and Layer 4 of the network’s OSI model. However, they aren’t equipped with in-depth packet inspection capabilities.

Detailed explanation-3: -A firewall generally works at layer 3 and 4 of the OSI model. Layer 3 is the Network Layer where IP works and Layer 4 is the Transport Layer, where TCP and UDP function. Many firewalls today have advanced up the OSI layers and can even understand Layer 7 – the Application Layer.

Detailed explanation-4: -Firewalls typically work on the network layer, the transport layer.

Detailed explanation-5: -A stateful firewall is a kind of firewall that keeps track and monitors the state of active network connections while analyzing incoming traffic and looking for potential traffic and data risks. This firewall is situated at Layers 3 and 4 of the Open Systems Interconnection (OSI) model.