Terms

Rule description is a human readable line of text intended to provide description of a rule and what packets it applies to.  

Rule identifier (or rule priority) is a numeric value within the range of 1 to 65535. The smaller is the priority value of a rule, the higher is its priority and the faster it will be applied when analyzing packets.

Network interface is a network adapter that receives the packets that are analyzed basing on a security rule.

Depending on Type the rule will either pass packets thru or block them.

Rule direction defines packets affected by the rule. Security rules can be applied to incoming packets only, outgoing packets only or both incoming and outgoing packets. 

According to protocol, the rule is applied to the packets with the same protocol only.

Source IP-address and port - control over packets with given source defined by security rules.

Destination IP-address and port - control over packets with given destination defined by security rules.

Note

•  The Port term applies to TCP and UDP network protocols only.