Chapter 9 Configuring Public Servers

Adding a Public Server that Enables Static NAT

Firewall Mode Guidelines

Supported in routed and transparent firewall mode.

Adding a Public Server that Enables Static NAT

To add a public server that enables static NAT and creates a fixed translation of a real address to a mapped address, perform the following steps:

Step 1 In the Configuration > Firewall > Public Servers pane, click Add to add a new server.

The Add Public Server dialog box appears.

Step 2 From the Private Interface drop-down menu, select the name of the private interface to which the real server is connected.

Step 3 In the Private IP address field, enter the real IP address of the server (IPv4 only).

Step 4 In the Private Service field, click Browse to display the Browse Service dialog box, choose the actual service that is exposed to the outside, and click OK.

Optionally, from the Browse Service dialog box you can click Add to create a new service or service group. Multiple services from various ports can be opened to the outside. For more information about service objects and service groups, see the “Configuring Service Objects and Service Groups” section on page 20-5in the general operations configuration guide.

Step 5 From the Public Interface drop-down menu, enter the interface through which users from the outside can access the real server.

Step 6 In the Public Address field, enter the mapped IP address of the server, which is the address that is seen by the outside user.

Step 7 (Optional) To enable static PAT, check the Specify if Public Service is different from private service check box .

Step 8 Click OK. The configuration appears in the main pane.

Step 9 Click Apply to generate static NAT and a corresponding access rule for the traffic flow and to save the configuration.

For information about static NAT, see the “Information About Static NAT” section on page 3-3.

Adding a Public Server that Enables Static NAT with PAT

To add a public server that lets you specify a real and mapped protocol (TCP or UDP) to a port, perform the following steps:

Step 1 Choose Configuration > Firewall > Public Servers, then click Add.

The Add Public Server dialog box appears.

Step 2 From the Private Interface drop-down menu, choose the name of the private interface to which the real server is connected.

Step 3 In the Private IP address field, enter the real IP address of the server (only IPv4 is supported).

Cisco ASA Series Firewall ASDM Configuration Guide

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Cisco Systems ASA 5580, ASA 5505, ASA 5545-X, ASA 5555-X, ASA 5585-X manual Adding a Public Server that Enables Static NAT
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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.
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