Cisco Firewall

Configuring Dynamic Multipoint VPN and Zone Based Firewall

DMVPN provides the capability for creating a dynamic-mesh VPN network without having to pre-configure (static) all possible tunnel end-point peers, including IPsec (Internet Protocol Security) and ISAKMP (Internet Security Association and Key Management Protocol) peers. DMVPN is initially configured to build out a hub-and-spoke network by statically configuring the hubs Read more…

By Joe Conklin, ago
Cisco Firewall

Basic use of ACLs

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 other protocols and even port numbers or specific IP Read more…

By Joe Conklin, ago
Cisco Firewall

Zone-Based Firewall

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 the option to specify a port. This type Read more…

By Joe Conklin, ago