Services – Firewall and VPN engineering

gold man with locked laptop Firewalls and Virtual Private Networks (VPNs) are essential for allowing data to flow appropriately and securely between your offices and to your employees and customers. As a Cisco Select Partner and a Juniper Networks reseller, we have the experience and skilled engineers to specify, supply and configure a firewall and/or VPN that meets your business requirements while providing the security that allows you peace of mind. We can also provide:

Does your networking system require flexibility and mobility without compromising security?
Find out more about our SSL VPN Multipoint Secure Networks

VPNs – what you need to know

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This section will give you some more information about one of the most important features of your firewall – the capability to give you a secure connection using the public Internet. A Virtual Private Network transports confidential information across the open Internet in a secure manner. The connection is encrypted to prevent eavesdropping, and authenticated so that you can be sure the people you send data to really are who they say they are. There are two basic designs of VPN:

  • Site-to-site VPN – this will securely interconnect whole buildings/floors/departments to others in your company across your general Internet link. It will generally require an item of hardware at each end of the connection.
  • Dynamic VPN – this is normally used by teleworkers, sales staff, etc., who are off-site. They will usually be running a 'VPN client' – software installed on a laptop or desktop which connects them securely into hardware back in the office.

Both can use several different protocols:

  • IPsec: a suite of protocols which provide encryption, authentication and other security features. This offers sophistication, but utilisation as a dynamic VPN also requires a software client. This can be used for both site-to-site and dynamic VPNs.
  • PPTP: used by Microsoft Windows for dynamic VPNs into Windows servers – although L2TP or IPsec can also be used for this purpose.
  • SSL: (or to be more technically correct, TLS) is normally used for web browsers to access banking and other secure applications, but can also be used for full dynamic VPNs or site-to-site VPNs.

    Choosing L3n for your VPN needs

    Considering all these options and their potential configurations, setting up VPNs can be a complex task that even experienced system managers like to leave to the experts. Whether you need a small Cisco ASA 5505 Firewall, through to the Juniper SA2500 SSL concentrator or the larger Cisco ASA 5580 and Juniper ISG firewalls, we have the knowledge and experience to :
    • discuss your requirements and specify the right equipment for your organisation.
    • supply, install and configure the hardware.
    • train you and your staff on using the VPN.
    • put our 24/7 support in place to provide you with network peace of mind.