This feature is not available in 8.51 or

Chapter 4 Configuring Network Object NAT (ASA 8.3 and Later)

Feature History for Network Object NAT

Table 4-1	Feature History for Network Object NAT (continued)

		Platform
Feature Name		Releases	Feature Information

PAT pool and round robin address assignment		8.4(2)/8.5(1)	You can now specify a pool of PAT addresses instead of a
			single address. You can also optionally enable round-robin
			assignment of PAT addresses instead of first using all ports
			on a PAT address before using the next address in the pool.
			These features help prevent a large number of connections
			from a single PAT address from appearing to be part of a
			DoS attack and makes configuration of large numbers of
			PAT addresses easy.
			We modified the following screens: Configuration >
			Firewall > NAT Rules > Add/Edit Network Object.

Round robin PAT pool allocation uses the same		8.4(3)	When using a PAT pool with round robin allocation, if a host
IP address for existing hosts			has an existing connection, then subsequent connections
			from that host will use the same PAT IP address if ports are
			available.
			We did not modify any screens.
			This feature is not available in 8.5(1) or 8.6(1).

Flat range of PAT ports for a PAT pool		8.4(3)	If available, the real source port number is used for the
			mapped port. However, if the real port is not available, by
			default the mapped ports are chosen from the same range of
			ports as the real port number: 0 to 511, 512 to 1023, and
			1024 to 65535. Therefore, ports below 1024 have only a
			small PAT pool.
			If you have a lot of traffic that uses the lower port ranges,
			when using a PAT pool, you can now specify a flat range of
			ports to be used instead of the three unequal-sized tiers:
			either 1024 to 65535, or 1 to 65535.
			We modified the following screens: Configuration >
			Firewall > NAT Rules > Add/Edit Network Object.
			This feature is not available in 8.5(1) or 8.6(1).

Extended PAT for a PAT pool		8.4(3)	Each PAT IP address allows up to 65535 ports. If 65535
			ports do not provide enough translations, you can now
			enable extended PAT for a PAT pool. Extended PAT uses
			65535 ports per service, as opposed to per IP address, by
			including the destination address and port in the translation
			information.
			We modified the following screens: Configuration >
			Firewall > NAT Rules > Add/Edit Network Object.
			This feature is not available in 8.5(1) or 8.6(1).

Cisco ASA Series Firewall ASDM Configuration Guide

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ASA Services Module, ASA 5555-X, ASA 5545-X, ASA 5585-X, ASA 5580 specifications

Cisco Systems has long been a leader in the field of network security, and its Adaptive Security Appliance (ASA) series is a testament to this expertise. Within the ASA lineup, models such as the ASA 5505, ASA 5580, ASA 5585-X, ASA 5545-X, and ASA 5555-X stand out for their unique features, capabilities, and technological advancements.

The Cisco ASA 5505 is designed for small businesses or branch offices. It provides essential security features such as firewall protection, flexible VPN capabilities, and intrusion prevention. The ASA 5505 supports a user-friendly interface, allowing for straightforward management. Its built-in threat detection and prevention tools provide a layered defense, and with scalability in mind, it can accommodate various expansion options as organizational needs grow.

Moving up the line, the ASA 5580 delivers greater throughput and advanced security features. This model is suited for medium to large enterprises that require robust protection against increasingly sophisticated threats. Its multi-core architecture allows it to manage high volumes of traffic seamlessly while maintaining excellent performance levels. The ASA 5580 also supports application-layer security and customizable access policies, making it highly adaptable to diverse security environments.

The ASA 5585-X further enhances Cisco's security offerings with advanced malware protection and extensive security intelligence capabilities. It incorporates next-generation firewall features, including context-aware security, and supports advanced threat detection technologies. This model is ideal for large enterprises or data centers that prioritize security while ensuring uninterrupted network performance and availability.

For enterprises requiring a balance of performance and security, the ASA 5545-X presents a compelling option. This model features scalable performance metrics, high availability, and integrated advanced threat protection. Coupled with advanced endpoint protection and detailed monitoring capabilities, the ASA 5545-X enables organizations to manage their security posture effectively.

Lastly, the ASA 5555-X blends cutting-edge technologies with strong security infrastructures. It boasts high throughput and the ability to execute deep packet inspections. Its sophisticated architecture supports threat intelligence feeds that provide real-time security updates, making it a powerful tool against modern threats.

Each of these Cisco ASA models brings specific advantages to varied environments. Their integrative capabilities enable businesses to enhance their security postures while benefiting from seamless scalability and management. As cybersecurity threats evolve, these advanced appliances play a vital role in protecting valuable digital assets.

Cisco Systems ASA 5505, ASA 5545-X, ASA 5555-X, ASA 5585-X This feature is not available in 8.51 or

Models: ASA Services Module ASA 5555-X ASA 5545-X ASA 5585-X ASA 5580 ASA 5505

Platform

This feature is not available in 8.5(1) or 8.6(1).

Cisco ASA Series Firewall ASDM Configuration Guide

ASA Services Module, ASA 5555-X, ASA 5545-X, ASA 5585-X, ASA 5580 specifications