Question

Operating principles of firewall

Answer 1

Answer:

A firewall defines a single choke point that keeps unauthorized users out of the protected network, prohibits vulnerability and provides protection from spoofing and routing attacks. ii. A firewall provides a location for monitoring security-related events. Audits and alarms can be implemented on the firewall system.

Answer 2

Based on a defined set of security rules, a firewall can perform three actions:

Accept: allow the transmission of data packets.

Drop: block data packets with no reply.

Reject: Block data packets and send “unreachable error” to the source.