Chapter 22 Configuring Connection Settings

Feature History for Connection Settings

Table 22-1

Feature History for Connection Settings (continued)

 

 

 

 

 

 

Platform

 

Feature Name

 

Releases

Feature Information

 

 

 

Configurable timeout for PAT xlate

8.4(3)

When a PAT xlate times out (by default after 30 seconds),

 

 

 

and the ASA reuses the port for a new translation, some

 

 

 

upstream routers might reject the new connection because

 

 

 

the previous connection might still be open on the upstream

 

 

 

device. The PAT xlate timeout is now configurable, to a

 

 

 

value between 30 seconds and 5 minutes.

 

 

 

We modified the following screen: Configuration > Firewall

 

 

 

> Advanced > Global Timeouts.

 

 

 

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

 

 

 

Increased maximum connection limits for

9.0(1)

The maximum number of connections for service policy

service policy rules

 

rules was increased from 65535 to 2000000.

 

 

 

We modified the following screen: Configuration > Firewall

 

 

 

> Service Policy Rules > Connection Settings.

 

 

 

Decreased the half-closed timeout minimum

9.1(2)

The half-closed timeout minimum value for both the global

value to 30 seconds

 

timeout and connection timeout was lowered from 5

 

 

 

minutes to 30 seconds to provide better DoS protection.

 

 

 

We modified the following screens:

 

 

 

Configuration > Firewall > Service Policy Rules >

 

 

 

Connection Settings

 

 

 

Configuration > Firewall > Advanced > Global Timeouts.

 

 

 

 

Cisco ASA Series Firewall ASDM Configuration Guide

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Cisco Systems ASA 5505, ASA 5545-X, ASA 5555-X, ASA 5585-X, ASA 5580, ASA Services Module manual 22-12
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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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