Contents

C H A P T E R 4

Configuring Network Object NAT (ASA 8.3 and Later) 4-1

 

Information About Network Object NAT

4-1

 

Licensing Requirements for Network Object NAT 4-2

 

Prerequisites for Network Object NAT

4-2

 

Guidelines and Limitations 4-2

 

 

Default Settings 4-3

 

 

Configuring Network Object NAT

4-4

 

 

 

Configuring Dynamic NAT or Dynamic PAT Using a PAT Pool

4-4

 

Configuring Dynamic PAT (Hide)

4-8

 

 

Configuring Static NAT or Static NAT-with-Port-Translation

4-11

 

Configuring Identity NAT

4-15

 

 

 

Configuring Per-Session PAT Rules

4-18

 

 

Monitoring Network Object NAT

4-19

 

 

 

Configuration Examples for Network Object NAT 4-20

 

 

Providing Access to an Inside Web Server (Static NAT) 4-21

 

 

NAT for Inside Hosts (Dynamic NAT) and NAT for an Outside Web Server (Static NAT) 4-23

 

Inside Load Balancer with Multiple Mapped Addresses (Static NAT, One-to-Many)4-28

 

Single Address for FTP, HTTP, and SMTP (Static NAT-with-Port-Translation)4-32

 

DNS Server on Mapped Interface, Web Server on Real Interface (Static NAT with DNS

 

Modification)

4-35

 

 

 

 

 

 

DNS Server and FTP Server on Mapped Interface, FTP Server is Translated (Static NAT with DNS

 

Modification)

4-38

 

 

 

 

 

 

IPv4 DNS Server and FTP Server on Mapped Interface, IPv6 Host on Real Interface (Static NAT64 with

 

DNS64 Modification)

4-40

 

 

 

 

Feature History for Network Object NAT 4-45

 

 

Configuring Twice NAT (ASA 8.3 and Later) 5-1

 

C H A P T E R 5

 

 

Information About Twice NAT

 

5-1

 

 

 

Licensing Requirements for Twice NAT

5-2

 

 

Prerequisites for Twice NAT

 

5-2

 

 

 

Guidelines and Limitations

5-2

 

 

 

 

Default Settings

5-4

 

 

 

 

 

 

Configuring Twice NAT 5-4

 

 

 

 

 

Configuring Dynamic NAT or Dynamic PAT Using a PAT Pool

5-4

 

Configuring Dynamic PAT (Hide)

5-12

 

 

Configuring Static NAT or Static NAT-with-Port-Translation

5-18

 

Configuring Identity NAT

5-24

 

 

 

Configuring Per-Session PAT Rules

5-29

 

Cisco ASA Series Firewall ASDM Configuration Guide

3

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Cisco Systems ASA Services Module, ASA 5505, ASA 5545-X, ASA 5555-X, ASA 5585-X Guidelines and Limitations Default Settings

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.