May 20th, 2021
Week 9: Firewalls
Posted by
2101716773krishita in
Ethical Hacking & Penetration Testing
A firewall is a security measure used to protect ports that are unused and open by filtering them to hosts with permissions. Some firewalls provide stateful packet inspection, which means they check addresses and ports and look inside the IP and TCP or UDP header to verify that it is an acceptable packet. Firewalls are meant for protection and detection. Most scans that aren’t stealthy will be picked up by firewalls and be alerted to the hosts and admins.
