Cisco Systems ASA 5500 manual Scenario Remote-Access VPN Configuration

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C H A P T E R 7

Scenario: Remote-Access VPN Configuration

A remote-access Virtual Private Network (VPN) enables you to provide secure access to off-site users. ASDM enables you to configure the adaptive security appliance to create secure connections, or tunnels, across the Internet.

Figure 7-1shows an adaptive security appliance configured to accept requests from and establish secure connections with VPN clients over the Internet.

Figure 7-1 Network Layout for Remote Access VPN Scenario

DNS Server 10.10.10.163

ASA security

appliance

Internal

Inside

Outside

Internet

network

10.10.10.0

 

 

 

 

 

 

WINS Server 10.10.10.133

VPN client

(user 1)

VPN client

(user 2)

VPN client

(user 3)

132209

 

 

Cisco ASA 5500 Series Adaptive Security Appliance Getting Started Guide

 

 

 

 

 

 

78-17372-01

 

 

7-1

 

 

 

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Contents Scenario Remote-Access VPN Configuration Implementing the Remote-Access Scenario 78-17372-01 Select VPN Clients Click the Remote Access VPN optionSpecify the VPN Tunnel Group Name and Authentication Method Specify a User Authentication Method Configure User Accounts optional Configure Address Pools Configure Client Attributes Configure the IKE Policy Configure IPSec Encryption and Authentication parameters Specify Address Translation Exception and Split Tunneling 78-17372-01 Verify the Remote-Access VPN Configuration What to Do Next Scenario Remote-Access VPN Configuration What to Do Next
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ASA 5500 specifications

Cisco Systems ASA 5500 is a robust security appliance designed to provide advanced network security and protection against both internal and external threats. Ideal for organizations of various sizes, the ASA 5500 series offers a wide range of features that combine firewall capabilities with intrusion prevention, VPN support, and application control, among others.

One of the key features of the ASA 5500 is its stateful firewall technology. This allows the device to monitor active connections and enforce security policies based on the state of the traffic. By maintaining the context of network sessions, the firewall can make informed decisions on whether to allow or deny traffic based on established rules.

In addition to traditional firewall functionalities, the ASA 5500 series integrates advanced intrusion prevention capabilities. By analyzing traffic patterns and identifying known threats, the IPS functionality helps organizations defend against a variety of malicious activities, such as DDoS attacks, malware, and unauthorized access attempts. The ASA 5500 continuously updates its threat intelligence through Cisco's global threat database, enhancing its ability to detect emerging threats in real-time.

Virtual Private Network (VPN) support is another significant aspect of the ASA 5500 series. The device offers secure, encrypted connections for remote users and branch offices, ensuring safe access to corporate resources over the Internet. It supports both IPsec and SSL VPN protocols, allowing organizations to choose the best option for their specific needs. This capability is crucial for businesses that require a secure environment for remote work.

The ASA 5500 series also features extensive application control and visibility tools. These tools enable organizations to manage and control the applications running on their network, ensuring that only authorized applications can communicate through the firewall. This level of control helps to mitigate risks associated with unauthorized applications, which can lead to data breaches or reduced productivity.

Moreover, the ASA 5500 is designed with high availability and scalability in mind. Its clustering support ensures that multiple units can work together to provide redundancy and load balancing, enhancing both performance and reliability. This characteristic is especially important for organizations looking to maintain continuous operation during traffic spikes or hardware failures.

In summary, Cisco Systems ASA 5500 is an all-in-one security solution that combines stateful firewall protection, intrusion prevention, VPN capabilities, and application control. With its robust feature set and focus on security, it is well-suited for organizations seeking to protect their networks from an ever-evolving landscape of cyber threats. Whether for small businesses or large enterprises, the ASA 5500 provides the necessary tools to create a secure networking environment.