Cisco ASA5520-BUN-K9 5 Ports Security Appliance
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ASA5520-BUN-K9 Cisco ASA 5520 5 Ports Network Security Refurbished

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Part Number#: ASA5520-BUN-K9
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Short Description:
ASA5520-BUN-K9 ASA 5520 5 Ports 10/100Base-TX, 1000Base-T, 2x Expansion Slots Manageable Fast Ethernet Firewall Edition Network Security Appliance | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Cloud Network Security Appliances

The Cisco ASA 5520 (ASA5520-BUN-K9) is a network security appliance that provides advanced security features for mid-size enterprise networks. It has 5 Ethernet ports and can handle up to 1 Gbps of firewall throughput.

The appliance integrates multiple security functions, including firewall, VPN, and intrusion prevention, into a single device, simplifying network security. The ASA 5520 also includes features such as:

  • Stateful inspection firewall: inspects all inbound and outbound traffic, providing detailed protection against network attacks
  • VPN support: provides secure remote access for teleworkers and remote offices
  • Intrusion Prevention System (IPS): blocks threats in real-time, including malware, buffer overflows, and protocol exploits
  • Content security: helps protect against spam, viruses, and other malicious content
  • Advanced threat defense: integrates with other Cisco security technologies, such as the Cisco Threat Grid, to provide advanced threat detection and response capabilities

Virtual Private Network (VPN) Appliances

The Cisco ASA 5520 5 Ports Network Security Appliance (ASA5520-BUN-K9) is a security appliance that provides multiple security functions, including firewall, VPN, intrusion prevention, and malware protection. Among these functions, the Virtual Private Network (VPN) feature is particularly important in securing remote access to an organization's network.

A VPN appliance creates a secure and encrypted connection between remote devices and the organization's network. With VPN, remote users can access network resources as if they were physically present at the organization's site. This allows remote users to securely access sensitive data and collaborate with other team members as if they were working in the same physical location.

The Cisco ASA 5520 VPN appliance supports multiple VPN protocols, including IPsec, SSL, PPTP, and L2TP, providing organizations with flexible options to meet different security and performance requirements. The appliance also supports advanced VPN features such as site-to-site VPN, remote access VPN, and VPN failover, ensuring that VPN connectivity is always available even in the event of network failures.

In addition, the ASA 5520 VPN appliance integrates with other security functions, such as firewall and intrusion prevention, to provide a comprehensive security solution. This helps organizations to secure their network and protect sensitive data from unauthorized access and attacks.

Key Features of Network Security Appliances

The ASA5520-BUN-K9 Cisco ASA 5520 5 Ports Network Security Appliance is a high-end security appliance designed to provide comprehensive network security solutions. Here are the key features of this network security appliance:

  • Firewall: This appliance is equipped with a firewall that is capable of filtering incoming and outgoing network traffic based on predefined security policies. The firewall also includes stateful inspection, which tracks the state of network connections and filters traffic accordingly.
  • VPN: This appliance provides support for Virtual Private Network (VPN) solutions, including remote access VPN and site-to-site VPN. This allows secure remote access to the network from any location and secure communication between two sites.
  • Intrusion Prevention System (IPS): The ASA 5520 includes an IPS that can detect and prevent various types of network attacks, including malware, viruses, and other security threats. This feature provides an extra layer of protection to the network.
  • Content Security: This appliance includes features to protect against web-based security threats, such as web filtering, anti-spam, anti-virus, and anti-spyware. These features help protect against malicious content that can enter the network through the internet.
  • High Availability: The ASA 5520 includes high-availability features that ensure the continuous availability of network security services even in the event of a hardware failure. This includes redundancy for power supplies and hot-swappable components.
  • Management: The ASA 5520 provides a user-friendly graphical interface for configuring and managing network security services. This makes it easier for administrators to configure and manage security policies, monitor network traffic, and troubleshoot issues.

General Information about this Cisco ASA5520-BUN-K9

  • Manufacturer: Cisco
  • Model Number or SKU# ASA5520-BUN-K9
  • Product Series: 5500
  • Product Model: ASA 5520
  • Product Name: ASA 5520 VPN/Firewall
  • Product Type: Network Security/Firewall Appliance

Technical Information of Security Appliance

  • Virtualization-
  • 280000 x Concurrent Session
  • 750 x IPSec VPN Peer
  • 2 x Web VPN Peer
  • 750 x Web VPN Peer
  • 9000 x Concurrent Session
  • 20 x Security Context
  • 2 x Security Context

Interfaces/Ports for this 5 Ports Security Appliance

  • Total Number of Ports: 5
  • USB: Yes
  • Management Port: Yes

Network & Communication for Firewall Appliance

I/O Expansions

  • Number of Total Expansion Slots: 2
  • Expansion Slot Type: SSM
  • Number of SSM Slots: 1

Management & Protocols

  • Manageable: Yes
  • Memory
  • Standard Memory: 512 MB
  • Memory Technology: DRAM
  • Flash Memory: 64 MB
  • Memory Card Supported: CompactFlash (CF) Card

Dimensions & Weight

  • Height 1.8 inch
  • Width 17.5 inch
  • Depth 13.2 inch
  • Weight (Approximate) 20 Lbs


  • UL 60950, CSA C22.2 No. 60950, EN 60950 IEC 60950, AS/NZS60950

Electromagnetic Compatibility

  • (EMC) CE marking, FCC Part 15 Class B, AS/NZS CISPR22 Class B, VCCI Class B,
  • EN55022 Class B, CISPR22 Class B, EN61000-3-2, EN61000-3-3

Industry Certifications

  • FIPS 140-2 Level 2. In process: Common Criteria EAL4+ US DoD ApplicationLevel Firewall for Medium-Robustness Environments, and Common Criteria
  • EAL4 for IPsec/SSL VPN
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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30-days to 3 years warranty:

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

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