Cisco ASA5525-CU-K9 8 Ports Networking Security Appliance Firewall
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ASA5525-CU-K9 Cisco Network Security Appliance Refurbished

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Part Number#: ASA5525-CU-K9
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Short Description:
ASA5525-CU-K9 ASA 5500 Edition Bundle ASA 5525-X Firewall Appliance 8 Ports Gigabit Ethernet - 256 MB/s Firewall Throughput - 1 Total Expansion with SW, 14GE Data, 1GE Mgmt, 3DES/AES | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days
Monitoring Network Traffic

The ASA5525-CU-K9 is a firewall appliance manufactured by Cisco Systems, which is designed to provide security to networks by controlling incoming and outgoing traffic. In addition to acting as a firewall, the ASA5525-CU-K9 also has the ability to monitor network traffic, allowing administrators to gain insight into what is happening on their network.

There are several ways in which the ASA5525-CU-K9 can monitor network traffic:

  • Packet capture: The ASA5525-CU-K9 can capture packets passing through it and store them in a buffer for later analysis. This feature is useful for troubleshooting network issues or investigating security incidents.
  • NetFlow: The ASA5525-CU-K9 can export NetFlow records to a NetFlow collector, which provides information about the source and destination of network traffic, as well as the amount of data transferred.
  • Syslog: The ASA5525-CU-K9 can send syslog messages to a syslog server, which can be used for monitoring and alerting.
  • SNMP: The ASA5525-CU-K9 can be monitored using SNMP, which allows administrators to gather information about the device's performance and status.
Creating Customized Security Profiles

The Cisco ASA 5525-X Firewall Appliance is a high-performance security solution that provides advanced protection against network threats. One of its key features is the ability to create customized security profiles that can be tailored to meet the specific needs of your organization.

With the ASA5525-CU-K9 model, you can create multiple security profiles that can be assigned to different users, groups, or departments. Each profile can include a variety of security settings and policies that can be customized to match the unique needs of your organization.

For example, you may want to create a security profile for your finance department that includes more stringent security policies, such as tighter access controls and stricter password requirements. Alternatively, you may want to create a profile for your marketing department that allows more relaxed security settings, such as more open access to social media sites.

To create a custom security profile, you will need to access the ASA 5525-X's web-based management interface. From there, you can navigate to the "Security Profiles" section, where you can create new profiles, edit existing profiles, and assign profiles to users or groups.

Within each security profile, you can configure a wide range of security settings, including access controls, intrusion prevention rules, and content filtering policies. You can also specify which types of traffic are allowed or blocked, and create customized rules to handle specific types of traffic.

Ensure the Reliability and Performance

The Cisco ASA 5525-X Firewall Appliance is designed to provide reliable and high-performance network security services for medium to large-sized organizations. Here are some tips to ensure the reliability and performance of this device:

  • Keep the firmware up-to-date: Cisco regularly releases firmware updates for its devices to fix security vulnerabilities, add new features, and improve performance. Make sure to download and install the latest firmware version for your ASA 5525-X to ensure optimal performance and security.
  • Configure appropriate firewall policies: The ASA 5525-X firewall is designed to provide granular control over network traffic. Configure appropriate firewall policies based on your organization's security requirements to ensure that only authorized traffic is allowed to pass through the firewall.
  • Optimize network performance: The ASA 5525-X has a range of performance optimization features that can help improve network performance. For example, you can configure traffic shaping policies to prioritize certain types of traffic over others, or enable load balancing to distribute traffic across multiple servers.
  • Monitor system logs: The ASA 5525-X generates system logs that can help you identify security threats and network performance issues. Make sure to monitor these logs regularly and take appropriate action when necessary.
  • Implement redundancy: The ASA 5525-X supports high availability and failover configurations, which can help ensure that your network remains up and running even in the event of a hardware or software failure. Implementing redundancy is critical for ensuring the reliability of your network security infrastructure.
Product Features
  • Brand Name: Cisco
  • Manufacturer: Cisco Systems, Inc
  • Manufacturer Part Number: ASA5525-CU-K9
  • Product Line: ASA
  • Product Series: 5500
  • Product Model: ASA 5525-X
  • Product Name: ASA 5525-X Firewall Appliance
  • Product Type: Network Security/Firewall Appliance

Technical Information

  • Virtualization-
  • 750 x IPsec VPN Peers
  • 2 x Premium AnyConnect VPN Peers
  • 500000 x Concurrent Connections
  • 20000 x New Connections/Second
  • 200 x Virtual Interfaces (VLANs)
  • 2 x Security Contexts
  • Firewall Protection Antivirus
  • Firewall Protection Malware Protection
  • Firewall Protection Worm Scanning
  • Firewall Protection Anti-spyware
  • Firewall Protection Intrusion Prevention
  • Firewall Protection Remote Access Authentication
  • Firewall Protection Access Control
  • Firewall Protection Content Filtering
  • Firewall Protection Application Layer Filtering
  • Encryption Standard 3DES
  • Encryption Standard AES


  • Total Number of Ports: 8
  • USB: Yes

Network & Communication

  • Ethernet Technology: Gigabit Ethernet
  • Network Standard: 10/100/1000Base-T

Wireless Specifications

  • Wireless LAN: No
  • I/O Expansions:
  • Number of Total Expansion Slots: 1


  • Standard Memory: 8 GB
  • Flash Memory: 8 GB

Power Description

  • Input Voltage: 110 V AC
  • Input Voltage: 220 V AC
  • Power Source: Power Supply


  • Package Contents-
  • ASA 5525-X Firewall Appliance
  • 1 x AC Power Supply

Please contact us over the phone or ask for live chat/help if you have any questions about the estimated time of arrival for any "lead time required" item.

Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
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