Firewall and Proxy Server

Software known as a firewall prevents unauthorized users from accessing or leaving a private network. All data packets pass through the firewall, which determines their permission to enter or exit the network. All traffic must traverse the firewall, and only permitted traffic can pass through it. Firewall and Proxy Server, the system sits between two networks, enforcing an access control policy between them. It operates on the network layer of the Open Systems Interconnection (OSI) paradigm to encrypt the data before sending it.