Virtual Local Area Networks (VLANs) are used to provide logical segmentation in a network. Sometimes they are used for security isolation, other times they are used to just break things up so the network don’t get too overwhelming from a management perspective. Many use cases exist. VLAN capability is a feature of business-class switches, and […]
Read MorePart of the Ekahau Certified Survey Engineer (ECSE) course involved just playing around with the application and testing different AP characteristics. The basic map was a football field for ease of measurement and examining antenna patterns. Some people played around with creating walls and making designs, so I thought I’d give it a shot. Enjoy! […]
Read MoreNote: This was prepared as part of the Ekahau Certified Survey Engineer (ECSE) training class, in effort to explain wireless channel access in ordinary language. Not sure if I succeeded, but hey I tried. Have you ever used a walkie-talkie? You know, the little handheld radios where you push the button to talk and release […]
Read MoreWhile preparing for a presentation on wireless basics recently, I came across a couple interesting ways of describing channels in a practical way. Wireless channels are distinct ranges of frequencies that operate in a target frequency band. In the unlicensed 2.4 GHz band, there are 14 separate channels to choose from, but typically we know […]
Read MoreWireless can be something many organizations just set and forget. Indeed, sometimes it is hard to bridge the divide between what works at home and what is needed in a business. Even if a proper sized system is installed, mistakes can happen. For better or worse, wireless protocols have been developed with backward compatibility in […]
Read MoreThe Domain Name System (DNS) is used to translate human-readable website names (google.com) to the IP addresses (216.58.192.228) used to route data packets to the proper destinations. Typical business networks also have DNS servers internally to handle access to resources using hostnames or aliases. The DNS server is an extremely important component to a stable […]
Read MoreDynamic Host Configuration Protocol (DHCP) is used to provide connection settings for computers and equipment. Most often this is used to enable basic network access by providing IP address, subnet mask, default gateway, DNS servers, and domain name. A plethora of other options exist as well, typically referenced by number, and are used for specific […]
Read MoreVery common scenario – Branch office with no local server uses site-to-site VPN to a corporate server infrastructure. Many things are commonly controlled centrally in the data center and rely on a stable VPN connection: Domain Controllers for authentication Domain Controllers for DNS Centralized DHCP Wireless LAN Controller for AP management File servers Line of […]
Read MoreThis article will be about my path to CWNA, and hopefully a stepping stone for what lies beyond. However, I also include some study tips that worked for me along the way. If you are working toward CWNA, please let me know if you find this helpful! Beginning About a year ago, I set out […]
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