What are 2 types or forms of suppression on a FirePower policy (or FTD)?

Source-based suppression in Cisco Firepower policies allows administrators to suppress intrusion events or alerts originating from specific source IP addresses or networks, which is useful for ignoring traffic from trusted internal scanning tools or known safe hosts.

Port-based suppression is not a distinct primary type of suppression but can be a condition within a rule or source-based suppression.

Rule-based suppression allows an administrator to disable or suppress specific intrusion rules globally or under certain conditions, helping to reduce false positives for particular environments without completely disabling the rule.

Protocol-based suppression is not a distinct primary type of suppression but can be a condition within a rule or source-based suppression.

Application-based suppression is not a distinct primary type of suppression but can be a condition within a rule or source-based suppression.