What is Stateful TCP/UDP inspection in Jetico?

Hello.
What kind of packets will fit these default rules in Jetico v1?:

Code:

Optimal Protecion -=> System Internet Zone -=> Accept Stateful UDP Inspection
Optimal Protecion -=> System Internet Zone -=> Accept Stateful TCP Inspection

I thought that stateful inspection is a way of firewall engine work.

 

Hello P4z, Welcome to Wilders,

These are the SPI rules. The firewalls that have SPI do have these rules, but they cannot be seen. In jetico all rules can be seen/edited, even the SPI.

 

What are the SPI rules then? What type of packet it matches?

 

These are the Stateful Packet Inspection rules.

Some info

 

It means that if i set this rule as rejecting Jetico will act as nonstateful firewall?

 

No, if you set that rule as "reject" it will block the returning packet.

 

Oh now i see. Thank you