notes to help me remember

Category Archives: Internet usage

Finding that MAC Address

Blocking devices by MAC address again in order to preserve sanity.  Some people, however, need access for their device.  A quick guide to finding those MAC addresses:

Original Kindle  (from technipages)

  1. From the Home screen, press Menu
  2. Select Settings
  3. The Wi-Fi MAC Address is located toward the bottom of the screen in the Device Info section

Kindle Fire (from Overton County Schools)

  1. From the home screen, tap on “Settings” in the top right corner
  2. Tap on “More”
  3. Tap on “Device” in the “Settings” Page
  4. MAC address is listed as “Wi Fi Mac Address”

iPad (from iPad to PC)

  1. Select the settings icon
  2. Tap “General” and then “About”
  3. The MAC address is listed as “Wi-Fi Address” (format xx:xx:xx:xx:xx:xx)

Windows (from

Windows 7 / Vista

  1. Click the Wireless Network Connection icon from within your system tray (near the clock).
  2. Select Network and Sharing Center.
  3. Select View status.
  4. Select Details.
  5. The MAC address is listed as Physical Address:

Windows XP/2000

  1. Click on Start and click on Network Connections on the right side of the menu
  2. Double-click on Local Area Connection (to find the MAC address of wired adapter) or Double-click on Wireless Adapter (to find the MAC address of the wireless adapter), or if you have a wireles connection icon in your system tray you can double-click on it!
  3. Click on the “Support” tab
  4. Click on “Details”
  5. The MAC address is the Physical Address (format is xx-xx-xx-xx-xx-xx)

Locating a Device by IP Address

IP address conflicts pop up here and there, sporadically.  Sloppiness borne of haste on our part, outside devices on our network, or the occasional access point that resets to its defaults.  These can all lead to IP address conflicts.  These are generally just an annoyance, and don’t result in any difficulties.  Tracking them down can be frustrating and not worth the effort.  But I recently got a little frustrated with a persistent conflict and decided to find a tool to help track it down.  I found a handy little utility called Zenmap (ver 5.51) that provides a handy GUI for Nmap.   Available from, this utility spits out useful information gleaned from the item connected to the network at the IP address you enter into the program.  It can show info about the type and name of the device that help identify what is causing an IP conflict on the network.  Helped me find the wireless access point that I had set up with a static IP and no reservation in DHCP (sloppiness, as I said).  Zenmap was kinda fun to use, and other than the single eye logo for the program, I am pleased with it.  (Not so much the logo, just not a favorite of mine.)

403 – Forbidden: Access is denied

It was a (very minor) surprise to see the access denied error when trying to run Microsoft updates on one of the student computers.  We keep the laptops “frozen”, so don’t usually see unit specific software errors.  Somehow, seems some MS certificates were listed in ‘untrusted publishers’.  Anyhow, deleted all certificates, good, bad, and ugly.  Seems to have solved the problem.  Off to wait for 75 updates now (134 MB).

But wait! Experienced this again, but the certificates did not have a role here.  I searched (403 forbidden windows update agent) and found this article, which instructed me to update the update agent (computers have gotten too complicated, I guess).  The article is on the Microsoft Answers site.  Here are the direct links for the 32 bit and 64 bit versions of the update agent.  Actually, Microsoft Support has a nice article  (949104)about determining whether or not you have the most recent version of update, with links to (presumably) the most recent versions.

Temp Internet Files

So, for whatever reason, I couldn’t see the Temporary Internet Files folder in the Local Settings folder in the user directory (blind, most likely, obviously it was there).  I was looking for the temp files from IE8 in order to get a time fix on inappropriate internet use.  Just a note – the folder may also be opened (for your viewing pleasure) by going to Internet Options (through IE8/tools or control panel), then Browsing history/Settings/View files.

Been a while – Internet Defender

“Internet Protection (not activated) This pops up when computer is turned on and won’t let me do anything.”  This was the request we got.  Turns out it is the “Internet Defender” virus (or some variety of it).  I am going to run Malwarebytes software, and take along Bleeping Computer’s rkill program, just in case.  Gotta hate these things – SEP didn’t seem to take any notice of the annoying window sitting there, asking the user to send money off to a distant black hole.  Really appreciate that the user knows it is a scam.  Anyhow, using some info at for starters.

Identifiying blocked sites

Downloaded and installed MS Network Monitor 3.4 to identify what web site was being blocked for, causing pages to not fully load (flash animations would not load, had a spinning pink donut).

Network monitor was able to show what traffic was going across Internet Explorer on my PC, then I could identify which site was blocked.

Network monitor download file was NM34_x86.exe, also has versions for Windows 7 and 64 bit.