Cisco ASA5505-SSL25-K9 Adaptive Security Appliance
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ASA5505-SSL25-K9 Cisco 11 Ports ASA 5505 Security Appliance New

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Part Number#: ASA5505-SSL25-K9
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Short Description:
ASA5505-SSL25-K9 ASA5505 11 Ports Adaptive Security Appliance - Secure Sockets Layer/Internet Protocol Security (SSL / IPsec) VPN Bundle - 25 SSL Users, 50 Firewall Users, 3 Advanced Encryption Standard/Data Encryption Standard (3DES/AES) | Made by Cisco | New Factory Sealed
Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

Understanding the ASA5505-SSL25-K9 Adaptive Security Appliance

In the realm of network security, the ASA5505-SSL25-K9 Adaptive Security Appliance stands as a stalwart guardian, offering a robust combination of features to safeguard digital assets. This comprehensive guide aims to elucidate the intricacies of this device, focusing on its key components, functionalities, and the bundle it comes with.

Unraveling the ASA5505-SSL25-K9 Adaptive Security Appliance

The ASA5505-SSL25-K9 is an Adaptive Security Appliance, designed to fortify network infrastructures against various cyber threats. It combines two potent security protocols – Secure Sockets Layer (SSL) and Internet Protocol Security (IPsec) – to ensure a layered defense mechanism.

Key Specifications


The appliance boasts 11 ports, facilitating diverse connectivity options for different network configurations. These ports play a pivotal role in managing incoming and outgoing traffic.

SSL VPN Bundle

The SSL VPN bundle is a distinctive feature of the ASA5505-SSL25-K9. It supports up to 25 SSL users, providing a secure and encrypted connection for remote access.

Firewall Users

With a capacity for 50 firewall users, the ASA5505-SSL25-K9 empowers administrators to regulate and monitor network traffic, allowing only authorized users and preventing unauthorized access.

Encryption Standards

The device supports two encryption standards – Advanced Encryption Standard (AES) and Data Encryption Standard (3DES). This ensures that data transmitted through the network is safeguarded with robust encryption algorithms.

SSL and IPsec: A Dynamic Duo

Secure Sockets Layer (SSL)

SSL is a cryptographic protocol that ensures secure communication over a computer network. It is widely used for creating a secure and encrypted connection between a user's web browser and a website.

Internet Protocol Security (IPsec)

IPsec, on the other hand, operates at the network layer, providing a suite of protocols for secure Internet Protocol (IP) communications. It enables the secure exchange of packets at the IP layer, adding an extra layer of protection to data in transit.

SSL VPN Bundle: Enabling Secure Remote Access

The SSL VPN bundle is a distinctive feature that sets the ASA5505-SSL25-K9 apart. Let's delve into the components and benefits of this bundle.

SSL Users

The appliance supports up to 25 SSL users, allowing a specified number of remote users to securely connect to the network. This is particularly crucial in the contemporary business landscape, where remote work is becoming increasingly prevalent.

Encrypted Communication

SSL VPNs encrypt the communication channel between the remote user and the network, ensuring that sensitive data remains confidential during transmission. This is imperative for industries dealing with confidential information, such as finance or healthcare.

Enhanced Security Policies

The SSL VPN bundle empowers administrators to implement and enforce stringent security policies for remote users. This includes authentication mechanisms, access controls, and monitoring capabilities to mitigate potential security risks.

Firewall Users: Guarding the Perimeter

The ASA5505-SSL25-K9 comes equipped with firewall capabilities, providing a robust defense at the network perimeter.

User Authentication

With support for 50 firewall users, the appliance enables administrators to enforce user authentication, ensuring that only authorized individuals gain access to the network. This is instrumental in preventing unauthorized access and potential security breaches.

Traffic Monitoring and Control

The firewall functionality allows for granular control over network traffic. Administrators can define rules and policies to regulate the flow of data, blocking malicious activities and unauthorized access attempts.

Encryption Standards: Fortifying Data Security

Advanced Encryption Standard (AES)

AES is a widely adopted encryption standard known for its strength and efficiency. The ASA5505-SSL25-K9's support for AES ensures that data in transit is protected by a robust encryption algorithm, safeguarding it from potential eavesdropping or tampering.

Data Encryption Standard (3DES)

3DES, although less commonly used than AES, is still a formidable encryption standard. The ASA5505-SSL25-K9's compatibility with 3DES provides flexibility in encryption options, catering to various security requirements.

Use Cases and Applications

Small to Medium Enterprises (SMEs)

The ASA5505-SSL25-K9 is well-suited for SMEs seeking an integrated security solution. Its compact size, coupled with its versatile features, makes it an ideal choice for businesses with limited space and resources.

Remote Workforce Security

As the workforce becomes increasingly mobile, the SSL VPN bundle becomes a critical component for organizations ensuring secure remote access. The ability to support 25 SSL users makes the ASA5505-SSL25-K9 an attractive option for businesses with a growing remote workforce.

Branch Office Security

For organizations with multiple branches, the ASA5505-SSL25-K9 can be deployed at branch offices to establish secure connections back to the main network. This ensures a consistent level of security across the entire organization.


The Cisco ASA 5505 SSL/IPsec VPN Adaptive Security Appliance (ASA5505-SSL25-K9) is designed to provide high performance and reliability for small to medium-sized businesses and enterprise branches.


  • It is capable of handling up to 300 Mbps of firewall throughput and up to 25 SSL VPN and IPsec VPN peers and 2 SSL VPN and IPsec VPN tunnels simultaneously.
  • It supports hardware-accelerated VPN encryption for high-performance VPN connections.
  • It supports Cisco FlexVPN for simplified VPN configuration and deployment, which helps to reduce the complexity of VPN deployment and management.


  • It has an integrated 4-port Fast Ethernet switch and supports 10/100/1000 Ethernet interfaces.
  • It supports redundancy and failover capabilities to ensure high availability.
  • It supports Cisco Identity Services Engine (ISE) for network access control and policy enforcement which helps in protecting the network from malicious actors and unauthorized access.
  • The device is managed through the Cisco Adaptive Security Device Manager (ASDM) or the command-line interface (CLI) which provide a comprehensive set of tools for monitoring, troubleshooting, and managing the device.

Remote Management Protocol

The Cisco ASA 5505 SSL/IPsec VPN Adaptive Security Appliance (ASA5505-SSL25-K9) can be managed remotely using several protocols and tools.

  • Cisco Adaptive Security Device Manager (ASDM):
    • It is a web-based management tool that allows you to configure, monitor, and troubleshoot the device.
    • It provides an intuitive graphical user interface (GUI) and a comprehensive set of wizards and templates for configuring the device.
  • Command-Line Interface (CLI):
    • It is a text-based interface that allows you to configure and manage the device using a set of commands.
    • It provides a powerful and flexible way to manage the device and automate tasks.
  • SNMP:
    • Simple Network Management Protocol (SNMP) is a standard protocol for managing devices on a network.
    • It allows you to monitor the device's performance and status, and receive alerts when certain conditions occur.
  • SSH:
    • Secure Shell (SSH) is a secure and encrypted protocol for remote management and access to the device.
    • It allows you to manage the device remotely using a secure and encrypted connection.

Key Information about the ASA5505-SSL25-K9 11 Ports Firewall Appliance

  • Brand Name: Cisco
  • Product Series: 5500
  • Product Model: ASA 5505
  • Product Name: ASA 5505 SSL / IPsec VPN Adaptive Security Appliance
  • Product Type: Network Security/Firewall Appliance

Technical Information of Cisco Network Security Appliance

  • Virtualization-
  • 25 x IPSec VPN Peer
  • 25 x SSL VPN Peer
  • 10,000 x Concurrent Session
  • 3,000 x Concurrent SSL VPN Session
  • 50 x Users on the LAN

Interfaces and Ports of 5500 Cisco Appliance

  • Total Number of Ports: 11
  • USB: Yes
  • Management Port: Yes

I/O Expansions

  • Number of Total Expansion Slots: 1

Management & Protocols

  • Manageable: Yes
  • Standard Memory: 256 MB
  • Flash Memory: 64 MB

In general, the ASA5505-SSL25-K9 Adaptive Security Appliance stands as a versatile and potent solution for organizations seeking to bolster their network security. From its SSL VPN bundle to robust firewall capabilities and support for industry-standard encryption, this appliance is a comprehensive answer to the evolving challenges of cybersecurity. As businesses navigate the complexities of a digital landscape, the ASA5505-SSL25-K9 offers a steadfast ally in fortifying the digital frontier.

Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days

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