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ASA5520-UC-BUN-K8 Cisco ASA 5520 Adaptive Security Appliance | Refurbished

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ASA5520-UC-BUN-K8 ASA 5520 Adaptive Security Appliance UC Security Edition 450 Megabits Per Second (Mbps) Network Security/Firewall Appliance | Made by Cisco | Refurbished

1 in stock

SKU: ASA5520-UC-BUN-K8 Category: Firewall

Description

Best practices for Optimizing Performance

The Cisco ASA 5520 Adaptive Security Appliance (ASA5520-UC-BUN-K8) is a high-performance security appliance designed for medium to large organizations. It offers a wide range of security features and is capable of handling high traffic loads. Here are some best practices for optimizing performance of the ASA5520-UC-BUN-K8:

Upgrade Firmware: Keeping the firmware up-to-date is important to ensure that the appliance is running smoothly and efficiently. Check the Cisco website for any available firmware updates and install them as needed.
Disable Unnecessary Features: The ASA5520-UC-BUN-K8 offers a wide range of security features, but not all of them may be necessary for your organization. Disable any features that are not being used to improve performance.
Optimize Access Lists: Access lists can impact the performance of the ASA5520-UC-BUN-K8. Optimize access lists by minimizing the number of rules and using object groups to simplify configuration.
Configure QoS: Quality of Service (QoS) can be used to prioritize network traffic and improve the performance of critical applications. Configure QoS policies to ensure that critical traffic is given priority.
Use Traffic Policing and Shaping: Traffic policing and shaping can be used to limit the amount of bandwidth used by specific applications or users. Use these features to ensure that bandwidth is available for critical applications.
Monitor Performance: Monitor the performance of the ASA5520-UC-BUN-K8 using tools such as SNMP, syslog, and NetFlow. Identify any bottlenecks or performance issues and take appropriate action.
Upgrade Hardware: If the performance of the ASA5520-UC-BUN-K8 is still not sufficient, consider upgrading the hardware to a more powerful model.

Deployment and Configuration Options

The Cisco ASA 5520 Adaptive Security Appliance is a firewall device designed for medium to large enterprises, providing a range of deployment and configuration options. Here are some of the deployment and configuration options available for the ASA 5520:

Firewall Deployment: The ASA 5520 can be deployed as a firewall, providing perimeter security to protect your network from external threats. It supports up to 450 Mbps of firewall throughput, making it ideal for medium to large enterprises.
VPN Deployment: The ASA 5520 can be deployed as a VPN concentrator, providing secure remote access and site-to-site connectivity for your organization. It supports up to 750 Mbps of VPN throughput, making it ideal for organizations with a large number of remote users.
Intrusion Prevention System (IPS) Deployment: The ASA 5520 can be deployed as an IPS, providing advanced threat protection against malware, viruses, and other types of malicious traffic. It supports up to 450 Mbps of IPS throughput.
Unified Communications (UC) Deployment: The ASA 5520 can be deployed as a UC security gateway, providing secure access for voice and video communications. The UC bundle also includes licenses for Cisco Unified Communications Manager and Cisco Unity Connection.
High Availability (HA) Deployment: The ASA 5520 can be deployed in a high availability configuration, providing redundancy and failover capabilities for mission-critical applications. It supports both active/active and active/standby failover configurations.
Virtualization Deployment: The ASA 5520 can be deployed in virtualized environments, providing security for virtual machines and virtual networks. It supports VMware ESX and ESXi, as well as Citrix XenServer.
Configuration Options: The ASA 5520 can be configured through a web-based interface, command line interface (CLI), or through the Cisco Adaptive Security Device Manager (ASDM) graphical user interface (GUI). It also supports multiple context mode, which allows you to partition the device into multiple virtual firewalls.

Troubleshooting Common Issues

The Cisco ASA 5520-UC-BUN-K8 is an adaptive security appliance that provides advanced security features for medium to large-sized organizations. Here are some common issues that may arise when using this device and how to troubleshoot them:

Connectivity Issues: If you are experiencing connectivity issues with the ASA 5520, check the physical connections to ensure that all cables are properly connected. You should also check the network settings to ensure that they are configured correctly.
Firewall Rules Not Working: If firewall rules are not working as expected, check the configuration to ensure that the rules are configured correctly. Also, check the logs to see if any events are being blocked by the firewall.
VPN Connection Issues: If you are having issues with VPN connectivity, check the VPN configuration to ensure that it is set up correctly. You should also check the logs to see if there are any errors related to the VPN connection.
High CPU Utilization: If you notice that the CPU utilization on the ASA 5520 is high, check the system processes to see if there are any processes that are consuming a lot of CPU resources. You may need to adjust the configuration or upgrade the hardware to resolve this issue.
License Issues: If you are experiencing license issues, check the licensing status to ensure that the licenses are valid and that they are configured correctly. You may need to contact Cisco support to resolve any licensing issues.
Firmware Upgrades: If you are upgrading the firmware on the ASA 5520, be sure to follow the upgrade instructions carefully. If the upgrade process is interrupted, it can cause the device to become unstable or even fail to boot.

Product Features