Function of stateful inspection configured on firewalls

The function of stateful inspection configured on firewalls is as follows:
Using stateful inspection, a firewall checks the validity of the link status of packets and discards the packets with invalid link status. Stateful inspection takes effect on both common packets and inner packets (decapsulated VPN packets).
When the firewall is the only egress of a network, all packets are forwarded through the firewall. In this case, both incoming and outgoing packets pass through the firewall. You can enable stateful inspection on the firewall to secure services.

Scroll to top