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Redundancy Design Inbound and Outbound

Please have a look to attached diagram.


I have 2 parts A & B. Part A already exist and running. We are planning to add Part B as show in the diagram.


Part A consists of ASA 5540 and 2921 as Edge Router and Microsoft TMG as Web Proxy for internal users


All other traffic routed to ASA. ASA handles NAT and ACL's


Objective of adding Part B is to have Redundancy Inbound and Outbound. However, firstly I  want to focus on outbound redundancy then I will move to Inbound Part.


After adding Part B, TMG will have 3 NIC's. 2 NIC will be connected to ASA's and 1 to internal


For Web proxy fail over I will configure TMG ISP-R feature. But my concern is for other traffic


Therefore, please can someone help me what are best possible ways I can use for outbound failover.


Thanking in advance. I appreciate the help

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New Member

Redundancy Design Inbound and Outbound

Any help, please ?

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