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7-7
Cisco ASA Series Firewall ASDM Configuration Guide
Chapter 7 Configuring Access Rules
Licensing Requirements for Access Rules
Access Rules for Returning Traffic
Because EtherTypes are connectionless, you need to apply the rule to both interfaces if you want traffic
to pass in both directions.
Allowing MPLS
If you allow MPLS, ensure that Label Distribution Protocol and Tag Distribution Protocol TCP
connections are established through the ASA by configuring both MPLS routers connected to the ASA
to use the IP address on the ASA interface as the router-id for LDP or TDP sessions. (LDP and TDP
allow MPLS routers to negotiate the labels (addresses) used to forward packets.)
On Cisco IOS routers, enter the appropriate command for your protocol, LDP or TDP. The interface is
the interface connected to the ASA.
ciscoasa(config)# mpls ldp router-id interface force
Or
ciscoasa(config)# tag-switching tdp router-id interface force
Licensing Requirements for Access Rules
Guidelines and Limitations
This section includes the guidelines and limitations for this feature.
Context Mode Guidelines
Supported in single and multiple context mode.
Firewall Mode Guidelines
Supported in routed and transparent firewall modes.
IPv6 Guidelines
Supports IPv6. (9.0 and later) The source and destination addresses can include any mix of IPv4 and IPv6
addresses. For pre-9.0 versions, you must create a separate IPv6 access rule.
Default Settings
See the “Implicit Permits” section on page 7-2.
Model License Requirement
All models Base License.