With regard to firewall technology, what is stateful packet inspection?

With regard to firewall technology, what is stateful packet inspection?

• Incoming packets must be legitimate responses from internal requests.
• The incoming packet must have been initiated from a trusted source.
• The incoming packet must be in an active state before being admitted to the network.
• Only secure traffic (SSH, HTTPS, and FTPS) is permitted through the firewall.

Explanation: With stateful packet inspection (SPI), only legitimate responses from internal requests are permitted through the firewall.

Exam with this question: CCNA 1 ITNv6 Chapter 11: Check Your Understanding