Difference between Stateless Firewall and Stateful Firewall
|Treats each packet in isolation and does not relates to connection state
|Stateful firewalls maintain context about active sessions and use “state information” to speed packet processing
|Based on information in packet headers
|Based on flows
|Memory and CPU intensive
|Header info, IP address, port no etc.
|State information, pattern matching etc.
Related- Router IOS Firewall vs Firewall