Tips

  • VPNs: Fundamentals and basics

    VPNs are discussed in this introductory tip on the fundamentals of virtual private networks.

  • Content Delivery Networking

    Doug Downer gives an overview of Content Delivery Network (CDN) technology and its components, which bring together the functionality of file access, caching, multimedia delivery and application pr...

  • Securing FTP on the Internet

    Some companies neglect to secure FTP clients with a solutions such as Secure FTP (SFTP) and a Secure Shell (SSH2) Server. This article explains how to configure and operate an SFTP client (SecureFX...

  • Pen testing your VPN

    Your VPN is a vital gateway into your network for your company's road warriors, telecommuters and other remote users. Unfortunately, it's also a gateway for the less-than-scrupulous predators prowl...

  • Creating a Windows VPN server

    This tip lays out the components needed for creating and troubleshooting a Windows VPN server.

  • Troubleshooting your Windows-based VPN

    This tip discusses some common reasons why a remote user might have trouble establishing a Windows VPN connection and what you can do to fix any problems.

  • Understanding data reduction and its effect on WAN appl

    For enterprises that require several different types of applications to be accelerated across the WAN, data reduction is an extremely valuable and cost effective tool, which merits serious consider...

  • Clientless VPN: Artful misnomer, useful technology

    They may not be completely clientless, but clientless VPNs can provide secure, user-friendly and largely affordable solutions to enable remote access over the Internet.

  • Differentiating WAN optimization and WAFS

    Storage expert Marc Staimer explains the differences between the often confused WAN optimization and WAFS.

  • Understanding network traffic flow analysis

    Network traffic flow is often compared to highway traffic flow. In this tip, Lindi Horton shows parallels between those two worlds and explains why traffic flow analysis is such an essential piece ...

  • VPN clients for mobile devices

    As more and more business users need the ability to access data and voice services anywhere, any time, with a single client device, their companies have to tackle both technological and security is...

  • WAN optimization speeds up branch office applications

    Have you ever noticed that there just never seems to be enough WAN bandwidth? These application acceleration techniques can help.

  • VPN troubleshooting 102

    There are a few likely suspects you'll want to round up when your VPN gives you trouble. Robbie Harrell posts their "mug shots" and helps track them down in this tip.

  • Remote-access VPN troubleshooting 101

    Should you find yourself suddenly given the task of supporting your company's remote-access VPN, Robbie Harrell recommends a systematic approach to learning the ropes.

  • VPNs with dynamic IP

    It can be a challenging problem to connect two sites across the Internet when both of them have a dynamic IP address. Tom Lancaster explores three different methods of tackling the problem in this ...

  • Scripting FTP using the .netrc file

    Calling FTP from a script can be difficult; a quick and dirty way to do this is using the .netrc file.

  • Virtual private network trends

    Robbie Harrell looks at some trends that will be shaping the VPN in 2006, including the explosion of SSL to support Web-based security.

  • IPsec VPN flaw could yield new round of attacks

    Attackers could exploit a vulnerability in a security protocol widely used in VPNs to cause a denial of service or buffer overflows, or to launch malicious code.

  • VRFs and routing

    Doug Downer continues his series about VPN routing and forwarding instances focused on the task of configuring and verifying a VRF scenario with a requirement for separate customers on a shared dev...

  • Multi-protocol gotchas

    A network containing more than one routing protocol can experience routing loops or black-holed traffic when similar routes collide. Tom Lancaster provides advice for troubleshooting your multi-pro...