The Burton Tech Journal

Networking

Display Known Wireless Network Passphrases

by on Apr.03, 2019, under Windows 10, Windows 7, Wireless Networking - 802.11 WiFi

Display known Wireless network passphrases in Windows 7, 8, and 10 by:

Run > CMD.EXE

Enter the command:

netsh wlan show profiles

Then determine the PROFILE name and type:

netsh wlan show profile name=profilename key=clear

Where PROFILENAME matches what you determined earlier

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Netgear Nighthawk AC1900 Wi-Fi USB Adapter

by on Jan.16, 2019, under Hardware, Wireless Networking - 802.11 WiFi

We’ve deployed a few of these Netgear Nighthawk AC1900 Wi-Fi USB Adapter (A7000-10000S) (on Amazon http://amzn.to/2T5UBrm) in areas with high radio density where we didn’t want the clients to have to deal with Alpha drivers. The adapter comes with a 3 foot USB cable that allowed for optimal place and we saw excellent throughput.

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New Orbi Installation

by on Nov.26, 2018, under Hardware, Wireless Networking - 802.11 WiFi

I did another installation with a slightly different model of Orbi. This time I used an Orbi AC2200 RBR20 Router (available on Amazon – http://amzn.to/2KBm7cQ) and a Orbi AC3000 RBS50 satellite (also available on Amazon – http://amzn.to/2TMlWzN. This configuration also utilized a wired backhaul network but this time the backhaul worked perfectly. It appears the latest firmware may have resolved any issues that were occurring the month prior.

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Orbi Wireless System

by on Oct.25, 2018, under Hardware, Wireless Networking - 802.11 WiFi

The Orbi system has been featured at numerous retailers from Costco to Amazon, and the expansion units are widely available. Although it would be find for most small business installations, the product is mostly marketed towards the home user. Installation can be done directly on the unit like a traditional wireless router, but Netgear also offers a mobile app to facilitate installation.

I recently installed an Orbi AC3000 RBK50 (available on Amazon – http://amzn.to/2P71pDv) router and satellite as well as an addition two Orbi AC3000 RBS50 satellites (also available on Amazon – http://amzn.to/2xZOexF). The router installed without any issues and it was able to be setup as a pure access point (transparent bridge). All units were wired into a switched network with a single subnet.

The satellites did present some minor issues accepting the backhaul configuration. After trying the latest firmware, as well as some older firmwares, nothing worked. I found that connecting the satellites to the router directly with a cable, then configuring the satellites to use a static IP address and moving the satellite to their final location on the network worked. Using the scan function subsequently results in the backhaul dropping, so I recommend not making any changes once the units are disconnected from the router.

After the Orbi’s were setup, performance was good. This installation site did not allow for radios to penetrate the walls well yet roaming between the various access points worked well. I would consider owning these units myself.

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Ubiquiti AirFiber PoE

by on May.04, 2018, under Hardware, Wireless Networking - 802.11 WiFi

Ubiquiti’s AirFiber is a great product for point-to-point wireless bridges. We’ve set up these units to connect buildings that have line of site and tunnel all internet and voip traffic over the connection. Unfortunately the devices require a 50V PoE injector which occasionally fails. Luckily they are easy to source on Amazon – http://amzn.to/2rll3BP.

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Wireless Mesh Networks for small businesses

by on May.01, 2018, under Hardware, Wireless Networking - 802.11 WiFi

Mesh network devices are beginning to become more popular in the home and small businesses. While I prefer Unifi devices for most small business installations, Netgear and other manufactures have easy to use apps for home users. You can see a variety of these devices on sale at Amazon http://amzn.to/2HJXx7v.

These devices work best if you have a wired back-haul network using a log CAT6 cable (like these on Amazon http://amzn.to/2Euw4sW) to coordinate the hardware, but they can be used as wireless bridges for hard to reach locations. It will be interesting to see this technology mature over the next few years.

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Set Domain Controller to update time with the US NTP Pool

by on Dec.01, 2014, under Microsoft Operating Systems, Microsoft Windows Networking

Run > cmd.exe:

w32tm /config /update /manualpeerlist:"0.us.pool.ntp.org,0x8 1.us.pool.ntp.org,0x8 2.us.pool.ntp.org,0x8 3.us.pool.ntp.org,0x8" /syncfromflags:MANUAL

Then restart the Windows Time Service
net stop w32time
net start w32time

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Non-Routable (Private) IP Addresses

by on Nov.29, 2008, under Networking, Security

RFC 1597 provides for a group of Internet Networks that will never be assigned. The private addresses will also not be routable through the Internet, preventing communication with networks on other subnets. The implementation of the Private IP address scope makes it the proper choice for use on company Intranets and for home/SOHO networks. These IP addresses have been specifically selected to use when it isn’t necessary or desired for computers on the Internet to connect to IPv4 based deviced on your network.

With use of a proxy server, firewall, or router, users and devices with non-routable IP addresses are allowed to access the Internet through a single IP address provided by their service provider. The devices achieve this through the process of Network Address Translation (NAT), allowing the nonroutable addresses to communicate with Internet-based, routable, Public IP addresses.

Reserved IP addresses for Private Networks are the following:

10.0.0.0 – 10.255.255.255
172.16.0.0 – 172.31.255.255
192.168.0.0 – 192.168.255.255

A complete and current list of all IP Address Allocations can be found at the Internet Assigned Numbers Authority’s (IANA) website: http://www.iana.org/numbers/

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Cannot Disconnect or Re-Map a Network Drive

by on Sep.17, 2008, under Microsoft Windows Networking, Microsoft Windows XP, Windows Vista

Occassionally a workstation will show a mapped network drive as “Disconnected” in Windows Explorer.  Double-clicking on the drive does not resume the connection and attempting to unmap the drive will give an error that “The network connection does not exist”.

Additionally you may see your login scripts not mapping other drives.

To correct the problem, download the User Profile Hive Cleanup Service from the Microsoft Downloads site and read the installation/usage instructions:

http://www.microsoft.com/downloads/details.aspx?familyid=1b286e6d-8912-4e18-b570-42470e2f3582&displaylang=en

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