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

Configuring Network Object NAT

Step 6 In the Translated Addr. field, do one of the following:

•Type the same IP address that you used for the real address.

•Click the browse button, and choose a network object with a matching IP address definition from the Browse Translated Addr dialog box.

•Click the browse button, and create a new network object with a matching IP address definition from the Browse Translated Addr dialog box.

Step 7 (Optional) Click Advanced, and configure the following options in the Advanced NAT Settings dialog box.

•Disable Proxy ARP on egress interface—Disables proxy ARP for incoming packets to the mapped IP addresses. See the “Mapped Addresses and Routing” section on page 3-22for more information.

•(Routed mode; interface(s) specified) Lookup route table to locate egress interface—Determines the egress interface using a route lookup instead of using the interface specified in the NAT command. See the “Determining the Egress Interface” section on page 3-24for more information.

•(Required for Transparent Firewall Mode) Interface:

–Source Interface—Specifies the real interface where this NAT rule applies. By default, the rule applies to all interfaces.

–Destination Interface—Specifies the mapped interface where this NAT rule applies. By default, the rule applies to all interfaces.

Do not configure any other options on this dialog box. When you are finished, click OK. You return to the Add/Edit Network Object dialog box.

Step 8 Click OK, and then Apply.

Because static rules are bidirectional (allowing initiation to and from the real host), the NAT Rules table show two rows for each static rule, one for each direction.

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Cisco Systems ASA 5545-X, ASA 5505, ASA 5555-X, ASA 5585-X, ASA 5580 manual Configuring Network Object NAT ASA 8.3 and Later
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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.

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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.
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