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User's question has been answered fairly.
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User's question has been answered fairly.

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What's the best method for prioritizing VOIP traffic on an ASA 5505 running IOS 8.2.5?
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What's the best method for prioritizing VOIP traffic on an ASA 5505 running IOS 8.2.5?

ASA 5505, IOS 8.2.5 -- how to prioritize VOIP traffic?

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.