Networking

Test Wireless Security using WPA Cracker

by File in: Networking

Have you recently setup a wireless network for a small business or at home? For companies, making sure their wireless network is not hackable is very important, especially if sensitive data can be accessed. Unfortunately, testing the security and strength of a wireless network is not very easy. To do it properly, you need the […]

Fix “Logon Failure: The Target Account Name is Incorrect” Error

by File in: Networking

When trying to logon to the domain from a client PC, I recently got the following error message in Windows: Logon Failure: The target account name is incorrect. What was strange was that it was only occurring for one particular user account in Active Directory and not other accounts. When I tried a different account, […]

Should You Buy CAT6 cable?

by File in: Networking

Even though modern home networks are connected using wireless technology, there are cases when you will still need to use LAN cables.  When a wireless signal can’t reach a portion of a house or an office, cables might be your only option. You’ll encounter several cable type designators with names like CAT5, CAT5e, and CAT6. […]

How to Connect a Non-Wireless Ethernet Device to a Wireless Network

by File in: Networking

The trend with many consumer devices now have built in Wi-Fi connectivity. However, many network devices like printers offer only built-in Ethernet networking. A new breed of wireless devices, like the Acksys WLG-LINK shown below, enables you to connect any industrial equipment featuring a 10/100 Ethernet interface to a WiFi wireless network. As you can […]

Router vs Switch vs Hub

by File in: Networking

You may hear the terms router, switch and hub used interchangeably. They look alike on the outside, but they’re very different on the inside. Hubs are dumb devices that simply repeat everything they hear. When one computer sends a signal to the hub, the hub sends the identical signal back out to all of the […]

How to Change an Apache Server Listening Port

by File in: Networking

Last week I have encountered a server with its http port 80 already taken by another software.  The “culprit” was unsurprisingly another web server software, the IIS.  Because the IIS users are already accustomed to the default port, the Apache installation had no choice but to use a less popular port for http, in this […]

How to Release and Renew an IP Address

by File in: Networking

If you’re working in IT, there are a few things that you need to know no matter what. They are basically essential skills for any IT person. One of those skills is knowing how to renew and release IP addresses. You’ll need to do this a lot during your IT career and it’s really useful […]

Enable or Disable Windows Firewall from Command Prompt

by File in: Networking

There may come a time when you need to write a script or remotely connect to the terminal and run a command to enable or disable the Windows firewall. For most IT environments, using Group Policy is the easiest way to configure the Windows Firewall on client computers. It’s also the easiest way to add […]

Which WiFi Encryption is Best?

by File in: Networking

Encrypting your wireless network accomplishes two things: it helps keep out leeches (i.e your neighbours) who would otherwise use your WiFi for free Internet, and it helps prevent intruders from breaking into your system to snoop around your PC. Of course, most wireless routers have encryption turned off by default, so any choice you make […]

How to Change Your Network Card MAC Address

by File in: Networking

Just recently I visited a friend whose ISP used the MAC address of his LAN card to authenticate his connection.  Since we know that the MAC address is an important element of LAN and WAN identification, some ISPs use it for monitoring or authenticating their clients before they can gain access to the Internet.  Unforunately, […]