ASA - Security levels, Difference between 8.3 pre and post, Transparent and Routed mode firewall, VPN, Stateful and stateless failover. Commands related to vpn

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The question covers various topics related to ASA firewall, including security levels, differences between pre and post 8.3 versions, transparent and routed mode, VPN, stateful and stateless failover, and VPN commands.

ASA firewall has security levels assigned to interfaces to control traffic flow
The 8.3 version of ASA introduced significant changes in NAT configuration
Transparent mode firewall operates at Layer 2 and doesn't modify IP addresses
Routed mode firewall operates at Layer 3 and performs routing functions
VPN (Virtual Private Network) allows secure communication over public networks
Stateful failover replicates connection state information between primary and secondary firewalls
Stateless failover only replicates configuration information between firewalls
VPN commands include 'crypto map', 'crypto isakmp', 'crypto ipsec transform-set', etc.

ASA - Security levels, Difference between 8.3 pre and post, Transparent and Routed mode firewall, VPN, Stateful and stateless failover. Commands related to vpn

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