Cisco ASA5555-CU-2AC-K9 8 Ports Networking Security Appliance Firewall
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ASA5555-CU-2AC-K9 Cisco ASA 5555-X Firewall Edition 8 Ports Refurbished

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Part Number#: ASA5555-CU-2AC-K9
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Short Description:
ASA5555-CU-2AC-K9 ASA 5555-X Firewall Edition Antivirus, Anti-spyware, Intrusion Prevention Access Control, Content Filtering, Application Layer Filtering 8 Ports Gigabit Ethernet USB 1 Manageable | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Configuring Advanced Encryption

The Cisco ASA 5555-X Firewall Edition is a high-performance, next-generation firewall appliance designed to provide advanced network security features to medium to large-sized organizations. The ASA5555-CU-2AC-K9 model is equipped with 8 Gigabit Ethernet ports, and it supports a variety of advanced security features, including advanced encryption.

Configuring advanced encryption on the Cisco ASA 5555-X Firewall Edition requires a few steps. Here are the steps to configure advanced encryption on the ASA5555-CU-2AC-K9 model:

  • Generate and Install SSL Certificate: To enable SSL encryption, you will need to generate and install an SSL certificate on the ASA. You can use a self-signed certificate or a certificate from a trusted Certificate Authority (CA).
  • Configure HTTPS: Once the SSL certificate is installed, you need to configure HTTPS on the ASA. HTTPS is used to encrypt HTTP traffic, and it is required for secure web-based access to the ASA.
  • Enable IKEv2: IKEv2 is a protocol used for VPN encryption. To enable IKEv2, you will need to create an IKEv2 policy and enable it on the ASA.
  • Configure IPSec: IPSec is used to encrypt traffic between two devices over a VPN. To configure IPSec, you will need to create an IPSec policy and enable it on the ASA.
  • Configure SSL VPN: SSL VPN is a type of VPN that uses SSL encryption to secure remote access to the network. To configure SSL VPN, you will need to create a connection profile and group policy, and enable SSL VPN on the ASA.
  • Configure TLS: TLS is a protocol used to encrypt email traffic. To configure TLS on the ASA, you will need to create a TLS policy and enable it on the ASA.
  • Configure DTLS: DTLS is a protocol used to encrypt UDP traffic. To configure DTLS on the ASA, you will need to create a DTLS policy and enable it on the ASA.

These are the basic steps to configure advanced encryption on the Cisco ASA 5555-X Firewall Edition. It is important to note that advanced encryption configurations can be complex and may require additional expertise in network security. It is recommended to seek assistance from a qualified network security professional to ensure proper implementation and configuration of advanced encryption features.

Mitigating Distributed Denial of Service (DDoS) Attacks

Distributed Denial of Service (DDoS) attacks are a type of cyber attack that aim to overwhelm a targeted network or server with a flood of traffic from multiple sources, making it inaccessible to legitimate users. Mitigating these attacks is critical for organizations to ensure their network infrastructure remains secure and available to users.

The ASA5555-CU-2AC-K9 Cisco ASA 5555-X Firewall Edition is a high-performance network security appliance that can be used to protect against DDoS attacks. Here are some of the ways this firewall can be used to mitigate DDoS attacks:

  • Traffic Filtering: The Cisco ASA 5555-X Firewall Edition can be configured to filter traffic based on a variety of criteria, including source IP address, destination IP address, protocol, and port number. By filtering out traffic from known DDoS attack sources, the firewall can help reduce the volume of traffic that reaches the target network or server.
  • Traffic Shaping: Traffic shaping can be used to prioritize certain types of traffic over others. By giving priority to legitimate traffic, the firewall can help ensure that critical services remain accessible during a DDoS attack.
  • Load Balancing: Load balancing can be used to distribute traffic across multiple servers, helping to prevent any single server from being overwhelmed by a DDoS attack.
  • SYN Flood Protection: One common type of DDoS attack is the SYN flood, which exploits vulnerabilities in the TCP/IP protocol. The Cisco ASA 5555-X Firewall Edition can be configured to protect against SYN floods by limiting the number of half-open TCP connections that are allowed.
  • Botnet Detection: Many DDoS attacks are carried out using botnets, which are networks of compromised computers that are controlled by a single attacker. The Cisco ASA 5555-X Firewall Edition can be configured to detect botnet activity and block traffic from known botnet sources.
  • Intrusion Prevention: The firewall can be configured to detect and block suspicious traffic that may indicate an attempted DDoS attack, such as a large number of packets from a single IP address.

Securing Remote Access

The Cisco ASA 5555-X Firewall Edition is a network security appliance designed to provide secure remote access to your network. This appliance has 8 ports and can handle up to 10 Gbps of firewall throughput, making it suitable for use in medium to large-sized organizations.

Remote access is a critical component of many organizations, as it allows employees to work from home or access company resources while on the go. However, remote access can also be a security risk if not properly secured. The Cisco ASA 5555-X Firewall Edition provides several features to help secure remote access to your network.

One of the key features of the Cisco ASA 5555-X Firewall Edition is its VPN capabilities. The appliance supports both site-to-site and remote access VPNs, allowing remote users to securely access your network over the internet. The appliance supports a variety of VPN protocols, including IPsec and SSL, providing flexibility for different types of remote access scenarios.

Another important feature of the Cisco ASA 5555-X Firewall Edition is its ability to perform deep packet inspection of network traffic. This allows the appliance to identify and block potential security threats before they can reach your network. The appliance also includes intrusion prevention and detection capabilities, further enhancing its ability to identify and prevent security threats.

To further enhance security, the Cisco ASA 5555-X Firewall Edition supports multi-factor authentication. This allows you to require users to provide additional authentication factors beyond just a password, such as a token or biometric authentication, before they can access your network.

General Information

  • Manufacturer: Cisco Systems, Inc
  • Manufacturer Part Number: ASA5555-CU-2AC-K9
  • Brand Name: Cisco
  • Product Line: ASA
  • Product Series: 5500
  • Product Model: ASA 5555-X
  • Product Name: ASA 5555-X Firewall Edition
  • Product Type: Network Security/Firewall Appliance

Technical Information

  • Virtualization-
  • 5000 x IPsec VPN Peers
  • 2 x Premium AnyConnect VPN Peers
  • 1000000 x Concurrent Connections
  • 50000 x New Connections/Second
  • 500 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
  • O Expansions
  • Number of Total Expansion Slots: 1


  • Standard Memory: 16 GB
  • Flash Memory: 8 GB

Power Description

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

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