3.28.2016

Cox High Speed Internet & Apple IPv6 issue [3/2016]

Cox High Speed Internet & Apple IPv6 issue [3/2016]


Several of my clients and friends have reported a disruption of service with their ISP and home network, with two things in common:

  1. ISP:Cox
  2. Router/Gateway: Apple AirPort Express, AirPort Extreme, or Time Capsule.
SYMPTOMS: The modem is online, and appears to be functioning normally by the ISP/CMTS, and packets can be see being sent to and from the modem by the headend. However, upon boot/restart/release & renew, the Apple device acquires, but fails to maintain a valid DHCP lease from the ISP. AirPort Utility,  reports as having no connectivity what so ever. I suspect a process is crashing, as clients see the wireless network disappear and re-appear.

CONTROL: If you bring a different non-Apple router into the mix, while spoofing the same MAC address of the Apple device's WAN, so as to not have to power-cycle the modem; the non-Apple router will function normally. This can be confirmed by simply disconnecting the modem from the Apple AirPort/Time Capsule and directly plugging it into a computer, then power cycling the modem. After a few minutes the computer connected will receive a valid IP; verifying that the modem is operational. *If you change connected equipment to a cable modem, always power cycle it as the modem will bond with and learn the first MAC address it sees.

RESOLUTION: Disabling 
IPv6 Sharing on the Apple device will mitigate the issue until Apple or the ISP can produce a proper resolution.

10.26.2013

"This copy of the Install OS X Mavericks application can't be verified" FIX

I ran into an issue where performing a clean install of OS X Mavericks produced an error "This copy of the Install OS X Mavericks application can't be verified". It may have been corrupted or tampered with during downloading."

I was performing the install from a USB stick, as well as performing the install on a machine that was not connected to the internet (wired or wireless). After recreating the USB installer, and getting the same results, I started to suspect that it was attempting to perform a check against the installer itself, so I wired it up; same thing. Then it hit me, it's checking against a certificate, date and time must be off.

Dropping into Terminal from the Mavericks installer (Utilities > Terminal) and running the date command showed that indeed the date and time were not current.

I simply ran the following command below to set it to today's date (Oct/26/2013 13:15)
date 102613152013

After the date is set, close terminal and proceed with install, this time successfully :). HTH

10.31.2009

NHR, Print Admin, and Local Admin scripts

A friend asked me to take over development and support of scripts that he wrote. They are:

Network Home Redirector
Local Admin
Print Admin

You can get them at http://tools.mconserv.net

8.25.2009

ARD 3 freezes on launch

If Apple Remote Desktop (ARD) continues to lock up when you open it, and it is looking at the Task History of the last performed task, you may need to simply delete the preference file containing the task history for "today". Here's how...

1. Close/Force Quit ARD.

2. Click on the Finder in the Dock. Then click the Go menu, and choose Home.
Navigate to and open the following path from your user home directory (keep in mind the ~/ denotes the current user's home path):

~/Library/Application Support/Remote Desktop/Task History/

3. Locate the plist that has today's (or the most recent/offending) date in it. It will follow this naming convention, YEAR-MONTH-DATE.plist.

For example: August 25, 2009 would be 2009-08-25.plist.

4. Locate and delete the file.

Now you should be able to open ARD. If you just so happen to be viewing another task upon opening ARD, other then today, then either delete the date when that task was ran. Or if your history is not required, simply delete all the plists in the path mentioned above.

Continuous lockup? Simply disable Task History in ARD
If this continues to occur, then you may want to simply disable Task History until Apple addresses this by:

1. Open Apple Remote Desktop.

2. Click on the Remote Desktop menu, and choose Preferences.

3. Click Tasks, and change Limit history shown in sidebar to the last 1 tasks. (see below). Check Limit task history to 1 days.

4. Close the window, then close and reopen Apple Remote Desktop.

6.18.2009

Google Calendar + iPhone OS3 = Win!

Here I will cover the simple steps to enable your iPhone to sync up to third party calendar services via CalDAV. I will showcase Google Calendar.

Creating a Google account
  1. Get yourself a Google account over at google.com, if you don't already have one.
Activating the Calendaring Service to your Google Profile
  1. Sign into your account, then access the My Account link in the top right.
  2. Under My Products click More.
  3. Click Calendar, under the Communicate, show & share section. Sign in if prompted.
  4. Fill out the information fields to create your calendar, and click Continue.
  5. At this point you should now have a Google Calendar!
Add Google Calendar to iPhone
From your iPhone/iPod Touch:
  1. Click Settings > Mail, Contacts, Calendars > Add Account... > Other > Add CalDAV Account
  2. Use the information provided, for the fields below. Replace USERNAME@gmail.com with your Google user account. IE johnsmith@gmail.com or jonsmith@apple.com.
Server: https://www.google.com/calendar/dav/USERNAME@gmail.com/user

*The iPhone/iPod Touch recognizes, and renames the server to be www.google.com, but the full path is used.

Username: your full user account IE johnsmith@gmail.com or jonsmith@apple.com.

Password:

Description: A description to label the Calendar on your iPhone. *By default the iPhone/iPod Touch labels it as Google.

3. Click Next.
4. Once the account is verified, click the Home button, and open the Calendar application.
5. Click Calendars button at the top left, scroll down and note your new Google CalDAV account you've just added and enjoy!

2.02.2009

Interactive Boards in the classroom

This news video showcases interactive boards in the classrooms of a school I supported, Ashland Park-Robbins. It was originally broadcast in January 2009, by KETV here in Omaha, but was picked up by all the major news networks.

I was responsible for the wiring of 45 Promethean Activeboards, as well as mounting, aligning, and wiring 45 LCD Projectors for use with the 78 inch ActiveBoards, Laptops, and pre-existing TV network. After I moved to TAC, Ashland Park-Robbins increased their number to 60 boards! I truly miss the staff and students of APR.