Cisco ASA Firewall Rules , Firewall Rules

All you know about Cisco ASA Firewall Rules: from Clear Concepts Networks:

-By default, Cisco ASA Firewall is a Layer 3 Device With Full Routing Capabilities.
-Not like a router, the Firewall does not allow all traffic to traverse thru it.
-Traffic flow thru the firewall is controlled by security levels of the interfaces.
-Traffic from a high security level interfaces is allowed to flow to a lower security level interface by default.
you could block the traffic by using an Access Control list (ACL).
-Traffic from a "Lower Security Level interface" is not allowed to flow to a "Higher Security level interface"
by default. you could allow the traffic by using an ACL.
-Traffic from the same Security Level is Completely blocked by default. Even an ACL will not help.
-You do have the ability to use the " Same-Security-traffic permit inter-interface command to allow all traffic between two
interface with the same security level. once this is done, all the traffic is allowed by default.
you could control it by using ACL.....

[saahmadahmad]

Good content and useful information keep up the good post.. Clear Concept Networks