Stateful inspection works at Network Layer .

Many Thanks,

Chinmoy Roy

Yes it offers the staeful inspection.

Stateful packet inspection

Stateful Inspection.

A stateful inspection firewall uses a technique known as stateful packet filtering to keep track of communication channels. This is different when compared to basic firewalls. Once the packet and connection has been sent, a normal firewall will not remember the communication channel, whereas the stateful inspection firewall will. This also proves useful to protect connectionless communication protocols.

dynamic state tables