As the number of devices in your network expands, you may find yourself running out of IP addresses available to your DHCP server. This can particularly be a problem with all the new kinds of devices commonly being added to networks, such as smart phones and tablets.
When a system is compromised, there are a number of best practices for investigating the breach properly. But what if you don't know the system has been compromised? For every Target story, there may be many other businesses with stolen data or other security breaches, but they just don't know it. One way to avoid being one of them is to comprehensively audit your systems.
Drive encryption can help prevent sensitive data in laptops from being stolen. However, if a user forgets his or her password for a computer whose drive is encrypted with a tool such as BitLocker, the prospects for recovering files are much worse than otherwise. Without drive encryption, there are many hacks to recover files without a password, such as booting from an Ubuntu disk. But if the drive is encrypted, you won't be able to see much once you get in.
While Windows automatically saves wireless security keys for you, you may sometimes want to check what the security key is. This can be helpful if you need the password in order to connect another device to the same wireless network. Using the command line to do this is particularly helpful, since it works the same way in most Windows versions, including both Windows 7 and Windows 8. Just run cmd.exe as administrator and enter the following command (replacing in the actual SSID name of the network):
The rewards for a great, successful upgrade migration are many. Work can get done more efficiently. Communication between colleagues is enhanced. Data and documents enjoy a greater level of security. And there’s so much.
We've all done it before. You forget to save a workbook, you accidentally save it when you should have saved it as a different name, or maybe you lose work because of that rare power outage. Whatever the case, there's no need to panic. With Excel 2010, you can quickly and easily recover older (unsaved) versions of your workbook.
If your system has frozen, you might find that you need to shut down Windows as quickly as possible. Although you can accomplish this task simply by pressing the power button on the computer, there’s a way for you to shut down the computer that's less harmful to the operating system.
Prevent or control use of USB flash drives (Windows)
Tiny flash memory drives that fit on a keychain (sometimes called thumb drives) are inexpensive and convenient for transferring files between computers that aren't on the same network--but they can also present a security risk for your organization. They can be used to bring viruses and unauthorized software in, or to smuggle sensitive information out. Luckily, there are software products, such as GFI's Portable Storage Control (PSC) , that let you control the use of these devices on your network.
If your system has frozen, you might find that you need to shut down Windows as quickly as possible. Although you can accomplish this task simply by pressing the power button on the computer, there’s a way for you to shut down the computer that's less harmful to the operating system. To do it:
1. Press [Ctrl][Alt][Delete] to display the Windows Security dialog box.
2. Hold down the [Ctrl] key and click the Shut Down button.
3. Click OK to confirm that you want to perform an emergency shutdown of the computer.
Be aware that when you perform an emergency shutdown, Windows doesn’t prompt you to save any open documents. To avoid losing your work, make sure that you save anything you’re currently working on (if possible) before performing an emergency shutdown.