Firewalls Flashcards
What is a stateless firewall?
It is a packet filtering looking at Ip addresses and what port the communication is going through
What a stateful firewall?
It monitors packets, source and destination IP addresses, and ports used as well as the state of that connection. Helps prevent SYN flooding attack, and also called dynamic packeting filtering firewall
What is content/URL filtering in firewalls?
This firewall has a database of allowed websites (URL) and if it doesn’t allow images or content that are on some websites.
WHat is a NAT Gateway?
What this firewall does is inspect the packet loo for source IP address and store it in a database then change the source IP address to a private IP address
What are detection methods of network security?
Signature based (Database of known hashes/signatures), Heuristics based (set of specific patterns), Behavior based (set of actions that match a threats behvior, Anomaly based (requires a basline establishment, detects behavior against baseline.
