I would like to know regarding the firewall rules on ASA 5500 v 8.6 that if NAT is not configured (not required) and firewall is routing the traffic among different interfaces without doing NAT so firewall rules permiting traffic from high security level to lower security level would be required as well ?
If you dont have any interface ACLS configured with the "access-list" and "access-group" command then traffic should by default go through from higher "security-level" interface to the one with lower "security-level".
Generally its a good idea to configure an interface ACL from the start since using "security-level" values only doesnt really give you much flexibility in the long run.
Thanks for your response. So it doesn't matter if NAT is configured or not on the ASA (v 8.6) right ? Implicit permit rule will be applicable for traffic flow from high security to low security level ? without any dependency on NAT configuration?
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...