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What is Transparent mode on Cisco ASA Firewalls

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What is Transparent mode on Cisco ASA Firewalls

Postby admin » Sun Jul 08, 2012 9:48 am

Transparent mode is very popular in data centers. They are not layer 3 visible by the devices on either side of it, or the devices going through it. It's a bump on the wire.

Why to use Transparent mode?

- Routing protocols can pass through it
- Layer three redundancy protocols like HSRP can pass through it
- Multicast and non-IP protocols can pass through it
- You don't want to change IP addressing in your network
- You don't want to change your Layer 3 design

Why not to use Transparent mode?

- When you want the firewall to be the default gateway
- Packet Tracer does not work in Transparent mode, this troubleshooting tool is only available in routed mode
- Your network design allows for the firewalls to be in the Layer 3 design


I prefer Routed Mode because of the ability to use Packet Tracer, what do you prefer?

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