Cisco Firewall

Basic use of ACLs

What are Access Control Lists and why to use them?An access control list is a rule, or can be comprised of one or more rules, that are applied to an interface allowing hosts to communicate to other hosts by filtering traffic using specific protocols such as tcp, udp, icmp or Read more…

By Joe Conklin, ago
Cisco Firewall

Zone-Based Firewall

What are Zone-Based Firewalls and how to use them?Zone-Based Firewalls (ZBF) is a firewall methodology of placing interfaces into zone and defining traffic definitions to allow traffic to pass or drop. In the past firewalls were comprised of access-list that would define both source and destination as well as having Read more…

By Joe Conklin, ago