When Wireless LANs Collide: How to Manage Multiple WLANs

Introduction Wireless networks are wonderful things – when they work! But many consumers find that even if they manage to get their WLAN (wireless LAN) working, keeping it up and running reliably with good performance is often frustrating and a struggle. Though flaky equipment and improper setup can sometimes be the cause, all too often the growing popularity of WLAN […]

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Dynamic Host Configuration Protocol (DHCP) Intro

Let’s imagine you’re a system administrator at a large company. You are implementing a new network of several hundred computers. All is fine and well until you realize: you have to manually input every single IP address, subnet mask, and gateway settings onto every single computer. You’re paid well, but maybe not that well. For those of us who don’t […]

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How to Subnet a Network

A properly designed subnet can do wonders for the security and performance of a network. The main idea in subnetting is to divide a network into smaller pieces, which we call subnets. Actually implementing a subnet is typically more difficult than simply using the default subnet mask of 255.255.255.0. This usually means that temporary or smaller networks do not need […]

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How To: Getting VPN to work through NAT firewalls

With the rising popularity of telecommuting and the increasing need to protect their electronic assets, companies large and small have been turning to Virtual Private Networking (VPN). The good news is that many savvy IT departments realize that many of their telecommuting employees share their broadband connections with consumer-grade routers. Those folks have made their lives easier by using “NAT […]

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