I am currently looking into the Cisco ASA firewalls. Mainly the 5520-5540. The firewall has 4 - ethernet ports. None of them being labled internal or external. Do these devices give the ability to configure any of these ports as any internal/external/DMZ? I've been sufing thru the site trying to find info on all this and so far I've been unable to find expliation on the "ports" and their usage.
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