ASA basic rules

ASA basic rules

by Cyrus Lok on Wednesday, April 7, 2010 at 12:58pm
Traffic from a higher to a lower security level is permitted by default,
unless you have restricted traffic with an ACL. This is called an outbound
connection.

Traffic from a lower to a higher level is denied, by default, unless you explicitly
permit it by configuring access control lists (ACLs), and/or configure Cut-through Proxy (CTP) authentication, discussed in. This is called an inbound connection.

Traffic from the same security level to the same level is denied by default.

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