Hot Computer Networking Posts

How To: Use salty hashes to keep passwords secure

In this tutorial, we learn how to use salty hashes to keep passwords secure. A hash is stored in a database that is hashed with an algorithm, so not everyone can see exactly what your password is. When you type your password into a website, it doesn't actually register as words, it registers as a hash. This keeps your passwords secure so not everyone can see them. Salting is when you use random pits and attaching them to your regular hashes so not every password is the same. The salt is what ...

How To: Crack a WPA (and some WPA2s) with BackTrack in Linux

In this video we learn how to crack WPA using Back Track. The first step is the boot into Back Track using a VMware Virtual Machine Image. Next you need to open a shell console. In the console you will type "airmon-ng" and press enter. This does a check to find the wireless guard interface name. Next, type "airodump-ng wlan0" and press enter. This will tell it what wireless card to use and scan for wireless networks. You are looking for the one that comes up WPA. Copy the MAC address then typ...

How To: Clear the ARP cache

In this tutorial, we learn how to clear the ARP cache. First, go the command prompt on your computer and type in "C:/>netsh interface ip delete arpcache Ok". Press 'enter' on your keyboard and then it should be cleared out. If you want to view your ARP cache, type in the command "C:/>arp -a". If this fails, then you will need to use Microsoft Windows to repair the network connection. If this doesn't work, talk to the person that manages your connection. If successful, this will help make your...

How To: Remotely administer a Netgear wireless router

If you want the ability to change router settings remotely, then you'll have to change some settings. This clip will show you how it's done. It's easy! So easy, that this video tutorial can present a complete, step-by-step overview of the process in about three and a half minutes. For more information, including detailed, step-by-step instructions, watch this video guide.

How To: Find your open ports in order to close them

In this how to video, you will learn how to keep your Windows operating system secure by look for and closing open ports. First, you will need to run the program called Net State. Once this is open, type in netstat -a. This will list main connections. Next, type in netstat -an. This will give you the numbers of ports that are open. Some may be used for file sharing and anti-virus programs. If you want it completely secured, you should only have one running. This video shows you how easy it is...

How To: Open ports in a Windows firewall

In this video tutorial, viewers learn how to open ports in Windows firewall. Begin by clicking on the Start menu, go to Control Panel and select Windows Firewall. In the Windows Firewall window, click on the Exceptions tab. Here, users are able to add, edit or delete exceptional ports. To add ports, click on Add Ports. Now name the port, input the port number, select the port type and then click on OK when finished. This video will benefit those viewers who use a Windows computer, and would l...

How To: Detect all computers connected to your wi-fi network

In this tutorial, we learn how to detect all computers connected to your Wi-Fi network. To begin, go to the website, http://msdn.microsoft.com/en-gb/netframework/aa569263.aspx. Once you are on this site, download and install the program. Once it's installed, open the program and then look for the MAC address. Once you find this, go back to the website and enter this into the MAC address line. After you do this, you will be able to see what computers are listed on your network. If you see any ...

How To: Change the default Windows Remote Desktop port

In this Computers & Programming video tutorial you will learn how to change the default Windows Remote Desktop port. It is actually a registry hack. You can check the IP address of our machine by typing ipconfig into the cmd prompt. For hacking into a machine, you should have created a user for the machine and allowed remote desktop to that user. Open up the remote desktop and type in the IP address and it will ask for a login. To hack the registry, click start and type in ‘regedit’ . now go ...

How To: Enable the Windows firewall and Windows Defender

Check out this computer software tutorial from Dummies.com. This tutorial is made for PCs. Increasing a PC's Windows Vista security is easily done by turning on the Windows firewall and Windows Defender. There's no need to download the firewall or Defender. Protection against spyware and other security risks increases upon enabling these free, built-in Windows solutions. Enable the Windows firewall and Windows Defender.

How To: Use iCal Server

Mac OS X server includes a calendar server for users and groups to coordinate events, schedule meetings, reserve resources and use time more effectively. To get started using iCal Server on your own Mac OS X Server, watch this video tutorial.

How To: Set up a Linksys WR54g or WRT54g2 wireless router

This video tutorial is in the Computers & Programming category which will show you how to set up a Linksys WR54g or WRT54g2 wireless router. First you connect to your Linksys router. Then go to http://192.168.1.1 and type in "admin' as your password in to log in window and click "log in'. then go to the "wireless' tab and enter your wireless network name. In the wireless channel select '11 2.462GHz' and click save. Next go to "wireless security' and type in the wireless network key. This is t...

How To: Make an email server on your home computer

Learn how to make an e-mail server on your home computer to host your own web page and webmail service by following the steps outlined in this video tutorial. You will need a web server, an e-mail server, and a webmail interface. For the server, the most common program is WampServer, which you will need to download. Run through the installation process and grant the program access to your fire. Click on the new icon on your desktop and click Put Online and then Start All Services. This will g...

How To: Bypass RealVNC authentication

VNC stands for Virtual Network Computing. It is remote control software which allows you to view and fully interact with one computer desktop (the "VNC server") using a simple program (the "VNC viewer") on another computer desktop anywhere on the Internet. The two computers don't even have to be the same type, so for example you can use VNC to view a Windows Vista desktop at the office on a Linux or Mac computer at home. For ultimate simplicity, there is even a Java viewer, so that any deskto...

How To: Use the Hacker Defender rootkit or HackDef

Hacker Defender is one of the most widely deployed rootkits in the world. It is a user-mode rootkit that modifies several Windows and Native API functions, which allows it to hide information (files, processes, etc.) from other applications. In addition, Hacker Defender implements a backdoor and port redirector that operates through TCP ports opened by existing services. This means it is not possible to find the hidden backdoor through traditional means, like launching a remote port scan agai...

How To: Port scan with Nmap

Nmap ("Network Mapper") is a free and open source (license) utility for network exploration or security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime. Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and OS versions) they a...

How To: Set up an Airport Extreme for outside computer access

This simple video tutorial explains how to use Airport Utility to configure your Airport Extreme so you can access your Apple computer remotely for file and screen sharing. It explains how to setup DHCP IP reservations and port forwarding using Manual Setup option of the Airport Utility. Considering that the tutorial becomes a little bit technical during the second part, this tutorial is aimed at users who already have at least some knowledge and/or experience setting up a network. Absolute b...

How To: Use SmartConnect with the F5 BIG-IP Edge Client

Watch how the F5 Networks BIG-IP Edge Client solution gets you connected automatically when you boot/start up your computer along with seeing the browser based version of the F5 BIG-IP Edge Gateway. Whether you're new to F5 Networks' popular network appliance or are a seasoned network administrator just looking to better acquaint yourself with BIG-IP, you're sure to benefit from this free video software tutorial. For more information, including detailed instructions, take a look.