Networking 8 Port Security Appliance Firewall
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ASA5555-K8 Cisco ASA 5555-X Network Security Appliance Refurbished

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Part Number#: ASA5555-K8
List Price was: $5076.92
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Short Description:
ASA5555-K8 Adaptive Security Appliance(ASA) 5555-X 8x Ports 10/100/1000Base-T 1x Expansion Slot Gigabit Ethernet Manageable 1U Rack-Mountable Network Security/Firewall Appliance | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Intrusion Detection and Prevention Features

The Cisco ASA 5555-X Network Security Appliance includes intrusion detection and prevention features to help protect networks from cyber threats. These features are designed to detect and prevent attacks in real-time by monitoring network traffic and applying security policies.

Here are some key features of the ASA 5555-X's intrusion detection and prevention capabilities:

  • Network-based intrusion detection and prevention (IDS/IPS): The ASA 5555-X can detect and prevent attacks by inspecting network traffic in real-time. It can be configured to block traffic from specific IP addresses or ports, and can use a variety of detection methods, including signature-based, protocol-based, and anomaly-based detection.
  • Threat intelligence integration: The ASA 5555-X can integrate with external threat intelligence sources to enhance its detection capabilities. This allows it to identify and block traffic from known malicious sources, and can help prevent zero-day attacks.
  • Customizable IPS policies: The ASA 5555-X allows administrators to create custom intrusion prevention policies tailored to their network's specific needs. This can include policies to block specific types of traffic, or to detect and alert on suspicious behavior.
  • Inline packet inspection: The ASA 5555-X can inspect packets in real-time and block traffic that violates security policies. This allows it to prevent attacks before they reach their targets.
  • Threat correlation and prioritization: The ASA 5555-X can correlate security events from different sources to identify advanced threats. It can also prioritize security events based on their severity and impact, allowing administrators to focus on the most critical threats first.

Web Filtering and Content Security Features

The Cisco ASA 5555-X Network Security Appliance provides a range of features designed to protect against web-based threats and enforce content filtering policies. These features include:

  • Web Security Essentials: This feature provides URL filtering, which allows administrators to block access to specific websites or website categories. It also includes anti-phishing protection, which can help prevent users from accessing fraudulent websites designed to steal sensitive information.
  • Web Security Premium: In addition to the features in Web Security Essentials, Web Security Premium includes advanced malware protection. This includes file reputation analysis, which can help identify and block files that are known to be malicious.
  • Cisco Cloud Web Security: This feature provides cloud-based web filtering and security capabilities, allowing administrators to enforce policies across multiple locations and devices. It also includes a range of additional features, such as content-aware data loss prevention, SSL decryption, and application visibility and control.
  • Application Visibility and Control: This feature allows administrators to monitor and control the use of specific applications and protocols, such as social media or peer-to-peer file sharing.
  • Intrusion Prevention System (IPS): The ASA 5555-X includes a built-in IPS that can help protect against a range of web-based threats, including malware and exploit attempts.
  • Advanced Malware Protection (AMP): This feature provides additional protection against malware by analyzing files for potential threats and blocking them if necessary. It also includes retrospective security, which can help detect and block threats that were not initially identified.

Troubleshooting Common Issues

The Cisco ASA 5555-X Network Security Appliance is a complex piece of hardware and software that can encounter various issues over time. Here are some common issues that can arise with the ASA 5555-X, along with troubleshooting steps to resolve them:

  • Connectivity Issues: If users are unable to connect to network resources or the internet through the ASA 5555-X, check the ASA interfaces, NAT configurations, and routing tables to ensure proper connectivity.
  • VPN Issues: If VPN users are unable to connect or are experiencing connection issues, check the VPN configuration settings, firewall rules, and authentication methods to ensure proper setup.
  • Firewall Rules Issues: If certain applications or services are not working properly, check the firewall rules to ensure that they are properly configured and not blocking the desired traffic.
  • IPS Issues: If the intrusion prevention system (IPS) is blocking legitimate traffic or not detecting known threats, check the IPS configuration settings, policy settings, and signature updates to ensure proper functionality.
  • NAT Issues: If network address translation (NAT) is not working properly, check the NAT rules and mappings to ensure that traffic is being properly translated between internal and external IP addresses.
  • High Availability Issues: If the ASA 5555-X is configured for high availability and redundancy, check the failover settings and configurations to ensure proper functionality.
  • Licensing Issues: If certain features or functionality are not working properly, check the licensing status of the ASA 5555-X to ensure that the appropriate licenses are installed and activated.
  • Performance Issues: If the ASA 5555-X is experiencing slow performance or is crashing, check system resource usage (CPU, memory, disk space) and adjust settings as necessary to optimize performance.
  • Firmware or Software Issues: If the ASA 5555-X is experiencing bugs or issues with the firmware or software, check for updates and patches from Cisco to address the issue.
  • Hardware Issues: If the ASA 5555-X is experiencing hardware issues such as component failures or power supply issues, contact Cisco technical support or a qualified network engineer to diagnose and replace the faulty hardware.

It is recommended to have a thorough understanding of the ASA 5555-X's hardware and software features and to follow best practices for deploying and configuring the appliance to minimize the risk of encountering these issues. Additionally, it is recommended to regularly update and maintain the ASA 5555-X's firmware and software to ensure optimal performance and security.

General Information

  • Brand Name: Cisco
  • Manufacturer: Cisco Systems, IncType: Networking
  • Manufacturer Part Number ASA5555-K8
  • Product Line: ASA
  • Product Series: 5500
  • Product Model: ASA 5555-X
  • Product Name: ASA 5555-X Network Security/Firewall Appliance
  • Product Type: Network Security/Firewall Appliance

Technical Information

  • Firewall Protection Supported Blended Threat Prevention
  • Firewall Protection Supported Intrusion Prevention
  • Firewall Protection Supported Anti-phishing
  • Firewall Protection Supported Denial of Service (DoS)
  • Firewall Protection Supported Brute Force Attack Mitigation
  • Firewall Protection Supported Threat Protection
  • Firewall Protection Supported Zero Day Event
  • Firewall Protection Supported Malware Protection
  • Firewall Protection Supported Worm Scanning
  • Firewall Protection Supported Spyware Protection
  • Firewall Protection Supported Distributed Denial of Service (DDoS)
  • Firewall Protection Supported Packet Flood Mitigation
  • Firewall Protection Supported Access Control
  • Firewall Protection Supported Traffic Anomaly Detection
  • Firewall Protection Supported Application Layer Filtering
  • Firewall Protection Supported Dead Peer Detection
  • Firewall Protection Supported AntiBot
  • Encryption Standard DES
  • Encryption Standard AES
  • Encryption Standard 3DES


  • Total Number of Ports: 8
  • USB: No
  • PoE (RJ-45) Port: No
  • Number of Network (RJ-45) Ports: 8

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

Management & Protocols

  • Manageable: Yes
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.

Here, you can check more available conditions of your desired product ASA5555-K8 at a competitive price. We are trying our best to meet your needs on the enterprise-level computer, server, data centre, and networking hardware. You are welcome to ask our live chat or get live representative support over the phone.


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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.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

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