OS X

High Sierra Root Vulnerability Macs Under CNS-OIT Management

If you own a Mac, you have probably heard by now that Apple introduced a serious bug into High Sierra by which anybody could log into a Mac using 'root' as the username and no password, and get full access to the system.

If your Mac is under CNS-OIT management, then a workaround has been applied: a root password has been set on your machine. Additionally, owners of managed machines will receive an email reminding them to apply as soon as possible the security patch that fixes the root vulnerability.

As always, if you have questions or need help, please don'

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High Sierra Root Vulnerability: Known Issue Migrating From 10.13.0 to 10.13.1

If you own a Mac, you have probably heard by now that Apple introduced a serious bug into High Sierra by which anybody could log into a Mac using 'root' as the username and no password, and get full access to the system. You may have also heard that Apple released a patch to fix this vulnerability. But have you heard that the bug 'silently' reappears on systems that are subsequently upgraded from 10.13.0 to 10.13.1?

If you apply the security patch to

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Undo your Mistakes!

Sometimes we make mistakes.  Fortunately, sometimes we can undo our mistakes.   Undo is a command or option in many computer or phone programs that undoes the last change made,  reverting the data or program to its state before the change was made.

The opposite of undo is redo. The redo command undoes the last undo. Both undo and redo are available in almost all computer software today.

Below are some ways to undo some of your technology mistakes.

General Undo Functionality

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Free PDF Editors

PDF has become one of the most common file types, one that’s popular among businesses attempting to go "green" or "paperless", as well as popular for sharing documents on web sites.  Part of their popularity is that they, in theory,  cost nothing to produce and assure that documents will appear the same to anyone, anytime; anywhere. PDFs can also be interactive or contain forms, if desired; and they can be partially or completely edited by peers. As more people switch to using PDFs, the desire or need to easily create and edit them also grows; thus, having access to the best

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Free Options to Photoshop

Adobe Photoshop has long been one of the premier image-editing computer programs available. If you're a graphic designer, professional photographer, or illustrator, this is probably what you use.  But it isn't cheap, it doesn't run on all operating systems; and it probably includes more functionality than is needed for most hobbyists, scientists, or students, adding to its complexity. Fortunately, there are free options to Photoshop, including some that are easy to use.  Below, we review three of the most popular applications we've used. (We should mention that web-based

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Cleaning Your Personally-Managed Linux System Using BleachBit

Utilities exist to help you find and clean your system of old and unused files. This allows you to free up disk space.  In this article we will look at installing and running on personally-managed Linux systems a utility that's free and available not only for many Linux distributions, but also Windows and Mac OSX.

Before we begin, it is important to keep in mind that running utilities that delete files with elevated privileges can break a system. One must always exercise care when doing so. Always keep in mind when running BleachBit that its file deletions are

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How to Monitor Network Traffic On an OS X Mac

nettop is a command-line program that displays updated information about network traffic. In this article we will cover how to run nettop, how to read its output, and how to format that output.

This article is intended for the Mac user who wants to learn more about which applications are accessing the network, what state the network traffic is in, and the amount of consumed resources. The reader can be at a beginning or intermediate level of computer knowledge and skills. The article covers the command-line program nettop

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How to Set a Static IP on a Mac OS X Machine

Step-by-step guide

Here’s a little primer on static Internet Protocol (IP) Addresses. Computers usually have the ability to grab a Dynamic Host Configuration Protocol (DHCP) address by default. Most networks are set to give out these dynamic IP addresses to any device that gets on the network and says, “I’m here! Give me an IP address so that I can use Google!”

The trouble with DHCP addresses is that they are dynamic. When a DHCP “lease” runs out, the computer or device may grab another available DHCP IP address.

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How to Track a Lost or Stolen iPhone, iPad, or Mac Laptop

"Find my iPhone" is the tool from Apple to help you keep track of your Apple iPhone, iPad, and Mac devices.

"Find my iPhone" can show you a map of where your device is, play a noise on the device to help you locate it, and even allow you to remotely lock the device in the event that it may have gotten into the wrong hands.

Instructions on setting up your device for "Find My iPhone" can be found at http://support.apple.com/kb/ph2697

Written by Eric Rostetter, Senior System Administrator

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