This video will show you how to subnet using CIDR notation. If you're curious about how to determine networks, subnet masks, broadcast addresses and what makes a host range valid. A great video for anyone currently studying computer networking...more

ok so i have a couple of computers that have there rdp port open but they have a sonicwall so every time i try to crack the login passwords i get locked out and when i try to send a shell it gets denied can someone plz guide me in the right direction on cracking or getting a shell on the server please and thank...more

rdp sever with ports 3389 and i think 22 ssh port also all servers have a sonicwall denying me access and and not letting my shell go...more

Living in remote places can be difficult without internet access. I saw a post on wonderHowTo that touched on this topic but I was wondering if someone could post on how to get fast satellite internet and Tv...more

This tutorial will show you how to locate and connect to your home or office...more

This tutorial will show you how to map network drives for easy access to shared files and folders on networked Windows 7...more

This tutorial will show you how to access shared files and folders on wired and wireless networked Windows 7...more

This simple tutorial will show you how to turn off and also turn back on your wired and wireless network connections in Windows...more

This tutorial will show you how to network multiple wired and wireless computers running Windows 7. It will also show you how to add shared file folders and network printers that other users can access over your...more

This tutorial will show you how to forward ports in your TRENDnet router/access...more

This tutorial will show you how to easily forward ports in your Linksys router/access...more

This tutorial will show you how to modify the SSID and pass-phrase settings on a Linksys Wireless...more

This tutorial will demonstrate how to change the SSID and /or pass-phrase settings of a Netgear access...more

This tutorial will demonstrate to you how to change the SSID and or pass-phrase settings on a TRENDnet wireless...more

This tutorial will show you how to forward tcp/udp ports within a D-Link Router or access...more

This tutorial demonstrates how you change the SSID and also the encryption settings in a D-Link wireless access...more

This tutorial will show you how to forward tcp & udp ports in a Linksys...more

This tutorial will show you how to modify the ssid and pass-phrase settings of a Linksys...more

This tutorial will show you how to forward tcp & udp ports in a Netgear...more

This tutorial will walk you through changing the ssid or pass-phrase settings in a Netgear...more

This tutorial will show you how to assign a static ip address to an adapter in Windows...more

Techno Nerd Needs HelpSEE...more

Over the years, I have enjoyed playing with Asterisk. I have found Asterisk to be extremely powerful and fun to play with. There are several books and many scattered how to articles out there, but most are outdated and the information required to build Asterisk from beginning to end can be a bit daunting. I wanted to combine all the steps into a single article and share my experience with everyone. If I have left out any steps please let me know. How to Setup Your Very Own Asterisk Server I chose to build Asterisk from source on a CentOS 5.5 machine. I also have the optional Zapmicro TDM400 Analog Interface PCI card with 2 FXO and 2 FXS modules. My current setup includes one analog line via the zapmicro card and one line via GoogleVoice. In order to make everything work together, several packages that are not installed by default are required. This article focuses on building your Asterisk box from scratch, there are several pre-built distributions such as AsteriskNow and trixbox...more

The presence of the internet is wide spread as people are becoming aware of the latest technologies coming up in the market; this gives rise to a cut-throat-competition amongst the business houses to remain on the top position. The location of the company is irrelevant but, what matters is how the company does the business through on-line marketing. Through the medium of Ecommerce website the business organizations can do the business globally and expand their horizons worldwide. It is time-saving activity for them and they can easily hit their target audience and get productive results. Ecommerce is becoming a very wider term in this competitive world as people are coming closer with the internet. The companies should promote their products and services on-line to attract more customers and spread awareness of their existence in the market.The business owners or big business houses generally do a huge investment in setting up their business by, using latest technologies, training...more

Ecommerce is becoming essential for every sector may it be teaching profession, may it be business companies, may it be sole proprietors or say entrepreneurs. Ecommerce is an electronic mode of doing transactions. Basic requirement of such strategy is to provide Ecommerce solution to customers through the on-line marketing.The business owners can train their employees by providing them technical assistance for using the available resources. This strategy makes the employees self-sufficient to tackle the difficult situation and prove their efficiency.When the business owner plans to design an Ecommerce website for launching their on-line stores in various locations, they must know the market review.Customers are interested in surfing a website which, has 24/7 access with technical support. The website design should be modified and re-designed on a regular interval of time according to the market demand. Everyone is interested in one stop solution so, the flexibility option should be...more

Ecommerce is the most powerful tool for the business owners to develop their business through on-line marketing. Ecommerce can be viewed from prospective point of view for developing the business and creating a brand name for them. The transactions are done on-line so, products and services can be utilized from any part of the world through on-line marketing. This saves the company's time and they can perform better to keep a pace with the competitive market.Ecommerce has widened the possibilities for companies to establish their brand name globally through the on-line marketing. It helps the company to build a brand image through qualitative link building strategies. The main intension behind making the Ecommerce user friendly website is that, the business owner can easily market their products and services through the on-line marketing across the globe with minimum efforts. This can be helpful to them for retaining their clients for a long time. It all depends upon the companies...more

Advances in technology continue to make our lives easier and more convenient. If you want to send fax, for instance, you no longer need to own a fax machine. You can easily and quickly send fax directly from your computer in one of several methods, including via an Internet fax service provider or using Windows built-in Fax and Scan tools. Read on how to use an Internet fax service, one of the faster faxing methods, to send fax messages from your PC. Create an Online Fax Service AccountOnline fax service providers allow users to send faxes from their PC's. They act as intermediaries who handle and store your fax messages online. You don't need to have fax hardware or install any fax software to send fax from PC using online fax service. All you need is a computer with an Internet connection and an account with the service provider. You will use the online account to log in and check your fax messages anytime, anywhere there is an Internet connection. InstructionsVisit an online fax...more

Abstract The purpose is to highlight the most important topics related to setting up ESX/ESXi monitoring as well as applications hosted within managed virtual machines (a MySQL database is used in this tutorial). Tools used: VMware vSphere Hypervisor (ESXi): http://www.VMware.com/products/vsphere/esxi-and-esx MySQL: http://www.mysql.com/downloads Monitoring tool: http://www.veraxsystems.com/en/products/nmsAgenda: 1. Adding an ESX/ESXi server to the list of monitored devices within NMS. 2. Configuring availability sensors and performance counters for the server. 3. Configuration of monitoring of an application running in a virtual machine on the server (a MySQL database in this case). 4. Setting up sensors and counters for the application. 5. Setting up alarms and notification policies. Adding a VMware server to device inventory In order to add a VMware ESX/ESX server to Verax NMS device inventory perform the following steps: 1. Log in into the Verax NMS and select Home from the...more

Have you ever typed in URL in your browser and received a message 'WEBSITE BLOCKED' then this is the article for you.You don't need to go through many complicated steps like changing system settings to gain access to these sites ,you just need to download this simple tool. With the click of a button the blocking is removed for ever.It also features a quick backup feature in case you need to backup the original blocking configuration,Just click the button to create a backup. When you need to restore original configuration click on the restore button.Thus all original blocking configuration can be  restored. Download Unblocker 1.0 from http://www.filesonic.com/file/1260230761 This tool requires .Net Frame Work to be Installed on your system Download Unblocker v1.0 +.Net frame Work from this link http://www.filesonic.com/file/1286084354/Unblocker_1.0_+.NET_FrameWork Install .net framework if it is not installed on your system. Run Unblocker 1.0.No Installation is Required for unblocker....more

What is DansGuardian?Schools, offices and universities often tend to use a software like DansGuardian to prevent people from accessing certain websites - websites like Youtube, Facebook, Myspace, and so on. However, if you ever find yourself in a situation where you need to access a blocked website... it's possible! As a matter of fact, it's quite easy.  How to bypass?The way this is accomplished is my changing your IP (Internet Protocol) address so that DansGuardian doesn't recognize the computer being used as a computer in the organization, thereby allowing access to any site - even blocked ones. The easiest and quickest way to change your IP address is to use a proxy. Finding a proxyWhile proxies are easy to find, they do get blocked quite quickly by DansGuardian, so you need a way to get new, fresh proxies when you need them. One way to do this is to subscribe to certain newsletters that send fresh, new proxies to your email for free. One of the sites that offer this service...more

Using TeamViewer The easiest way to access your computer remotely is using TeamViewer. Firstly, it is free for personal use. Secondly, you can connect to any computer, Mac, Windows, or Linux, using any other computer or your iPod touch or iPhone. Thirdly, it doesn't require playing with settings in your router. And finally, it uses AES 256bit encryption, the same security standard used by SSL sites. Heres how to set it up: Step 1. Download and install TeamViewer on your computer. Be sure to use the all-in-one version. You will also need to install it on your iPod/iPhone, or any remote computer you will be using to access your computer. Step 2. Open TeamViewer. Go into options/preferences, and under the general tab, in the startup box, put in a startup password. This is the password you will use to access your computer. On Windows, click the boxes labelled "start with Windows" and "minimize to tray." On Macs, go into system preferences -> accounts -> login items, and add...more

So, you've got a MacBook, an iPhone 4, an iPad 2... how do you keep track of everything? With Apple's new cloud computing service iCloud. iCloud allows you to store and share files and information between all of your iOS...more

iCloud is a very convenient service that allows you to share windows between two computers. To learn how to use iCloud, watch this video. With iCloud on your PC you can share information simply and efficiently between multiple workstations, or...more

This video explains the different kinds of zones you will come across in Microsoft Windows Server 2008 DNS. The video has practical step by step instructions to managing these zones, as well as understanding their different functions and uses, and covers...more

Get to know Microsoft Windows Server 2008 a little better by spending some quality time with this video. Learn about the start of authority tab in DNS, which includes a number of features, including serial numbers, time to live, responsible person, retry interval and...more

If you ever use NS lookup in Microsoft Windows Server 2008, you have to permit the machine running it to accept zone transfers. To do so, follow the instructions in this video. This video will show you how to use the name servers tab in DNS to allow machines to receive DNS...more

This video explains how to modify your DNS server to perform WINS lookups. Using Microsoft Windows Server 2008, you can perform WINS lookups across several networks which can resolve to a common resource. While Server 2008 cannot act as a WINS server, Server 2003...more

You may need to perform routine maintenance on your DNS server from time to time by clearing the cache. Servers keep records of the lookups they have performed, and when they become resolved records they can be cleared. Follow the instructions of this how to video to clear the DNS cache in Microsoft Windows Server...more

You can create many types of domain name service records in Microsoft Windows Server 2008. Glue records, CNAME records, mail exchanger and many other types of records are possible. Follow the instructions in this video to learn how to manually create DNS...more

A reverse lookup zone will allow you to translate IP addresses to fully qualified domain names (FQDN). This can be a tremendous help against phishing in large organization. Keep your network secure by creating a reverse lookup zone in Windows Server 2003 or...more

Want to be able to print wirelessly without having to buy a pricey network printer? Now you can! All you need to do is follow these simple, quick, steps. What you need: At least two computers running WindowsNormal non-network printerA networkOnce you have all of these things, you're ready to begin. Setting up the PrinterFirst, you need to connect your printer to the "host" computer using a USB cable. Install the printer driver if necessary. This computer must always be plugged in to the printer through the USB. Enable Printer Sharing on the "host" ComputerOn the host computer, go to: Control PanelNetwork & InternetNetwork & Sharing CenterOnce there, turn on "Printer Sharing" and turn off "Password Protected Sharing". Now make sure that the printer has the "Share this Printer" option checked. Go to: Control Panel.Hardware & Sound.Printers.Right-click the printer and select properties.Click the sharing tab.Make sure "Share this Printer" is checked.If not, click it. You...more

In terms of internet, faster = better. We all want faster internet, but how exactly do you get a fast wireless connection? Believe it or not, the answer is quite simple. Here are 4 things that may be slowing down your connection.Interference from Other DevicesInterference from other devices can really slow down your connection. It can make even the fastest connection sluggish.  For example, if your router and wireless home phone both operate at the same frequency, such as 2.4Ghz, then the two devices will interfere with each other whenever they're used at the same time. So when your phone starts ringing, your internet may become very slow. To fix this problem, replace any electronic devices that use the same frequency as your router with ones that use a different frequency. Signal StrengthThis one is pretty straight forward. The farther you are from the router, the weaker the signal will be. Likewise, the closer you are to the router, the stronger the signal; The stronger the...more

Birthday ecard is a traditional method of celebrating birthday. They are always the symbol of love and treasure of memory. Birthdays are never complete until you've given the one a warm hug or say “happy birthday” to him or her. Birthday ecards are specially designed to send birthday blessings, they are pretty and easy to make. So action at once, make a birthday ecard for the one who are await for his or her birthday. Search a kind of software to help you make ecard easily and effective. Picture collage maker pro is OK. You can download the free trail version and have a try first. Choose TemplateClick on template pane in the left window. Choose greeting card category within the template type. The templates available are shown. Choose the one you like and double click it or drag it to the editing area, thus it is applied. Select Background Click on background pane, you can choose the background by sorting the category in the background type. Double click it or drag it to have it...more

A custom application directory partition is a method of dividing your DNS servers for replication, and allows replication to occur between domain controllers. This video shows you the process of setting up your own using Windows Server 2008, though it will also work for the 2003 version as...more

So you know how to use a proxy server, but do you know how to set up a proxy chain? Proxy chains can be used to hide your tracks on the web. This video shows you how to use CGI and Tor to set up your own proxy...more

Long story short, there is literally no way to have no fingerprint on the internet because you do not have control once you leave the internal network and do not have any idea as to what is going on once you leave the internal network, such as logging and sniffing and such. This is the reason for the title of this article. “Here be Dragons” was a medieval practice of putting that text in blank areas of maps that were not explored. It’s my opinion this should be used in the cloud (internet) as well because a user literally has no idea what’s being done with their data or much (if any) control over it once it’s out there. The point of this writing is not to beat into your head the importance of not being an idiot when it comes to general internet privacy. Honestly, I have enough problems and don’t really care about yours personally - however when faced with the sheer number of all of the collective "yous" out there as a whole I obviously care enough to take time out of my schedule to...more

This video will teach you how to hack a WEP wifi network on a Mac. You'll need to follow the link, grab the prog and follow the steps. It's not too hard, so give it a try. Remember, stealing is...more

Does your network begin to crawl right around the time your sinister-looking next-door neighbors get home from work? Do you harbor suspicions that one or more of them may be stealing your Wi-Fi? It's easy to find out. And equally easy to give freeloaders the boot. In the guide below, we'll show you how to secure your wireless connection in three easy steps. Log into your wireless routerEnter your Wi-Fi router's local IP address into your web browser and, when prompted, log in. TipsDon't know your login information? Try downloading AnswersThatWork's List of Default Router Passwords and Default Router IP Addresses. Find and check the list of attached devicesOnce logged into your router, do your best to locate the list of connected devices. On a Netgear router, for instance, you'll find Attached Devices under Maintenance in the left frame. Find the link? Click on it. You'll now be presented with a list of all the wireless devices on your network. You'll have access to IP addresses,...more

Step one: To change your password:1.    From the Yahoo! Home page, click on your user name in the upper right.(You will need to be signed in already) 2.    From the drop down select Account Info3.    You will be asked to sign in again to enter your Account Info page. 4.    Click Change your password5.    You will be taken to a page that will look like the one below.1.    Enter your current password. 2.    Enter and confirm your new password. 3.    Click Save. You will see a confirmation page when you have successfully changed your password. 4.    Click Continue. Your Yahoo! password always applies to your entire Yahoo! account. This means that it is valid not only for Yahoo! Mail but also for Yahoo!'s other personalized services like :·    Yahoo! Messenger ·    Yahoo! Chat ·    My Yahoo! ·    Yahoo! Finance Note: If you are having difficulty logging into your account or believe your account may have been compromised please request a new password For additional information about secure...more

Import Kodak VideoClick the "Add File" button, browse your PC hard discs and add the Kodak video files you want to convert to the program. Select the format to convert  Doremisoft Kodak Video Converter allows you to convert Kodak video into almost all popular formats. Open the Profile list as shown in the below figure, and you will see all the formats available to convert Kodak videos. Then you can just select the format you prefer. For example, if you want to convert Kodak video to HD WMV, you can just select HD WMV from "HD Video" -> "HD WMV Video". Start to convert Kodak videoWhen you are finished with the above steps, click the Start button (the big yellow button on the lower right) to start the conversion. You can choose to "Open output folder when conversion is finished" and "Shut down your computer when the conversion is finished" on the conversion window. TipsYou can check the "Apply to all" option on the lower part of the screen to apply the selected format to all...more

In this tutorial, we learn how to upgrade the firmware on a Linksys router. First, you will need to know what you already have, go to 192.168.1.1 on your browser to find this. Next, search for the name of your router that you got from the site. From here, click on the downloads on the page. Then, you will pick the model number for it. Download this on your computer and it will run through the download process. When done, go back to the router website to make sure it was upgraded and then you're finished,...more

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 computer run faster and programs be more efficient,...more

In this video tutorial, we learn how about the basics of setting up a simple wired network. It's easy. So easy, in fact, that this home-computing how-to from the folks at CNET can present a complete overview of the process in just over two minutes. For more information, including a complete demonstration detailed, step-by-step instructions, take a...more

In this clip, you'll learn how to breathe new life into an old router from its factory-default firmware to a custom third-party firmware like Tomato. For a complete demonstration of the process and detailed, step-by-step instructions, watch this handy home-computing how-to from the folks at...more

In this tutorial, you'll learn about the cables required for setting up a small home or office network. Fortunately, cable selection is an easy process and this video presents a complete guide. For more information, including a full demonstration and detailed, step-by-step instructions, watch this helpful home-computing...more

In this clip, you'll learn methods for troubleshooting and resolving the most commonly encountered WiFi wireless network problems. It's an easy process and this video presents a complete guide. For more information, including a full demonstration and detailed, step-by-step instructions, watch this helpful home-computing...more

In this tutorial, you'll learn a few standard methods for resolving less common and more complicated wireless network problems. It's an easy process and this video presents a complete guide. For more information, including a full demonstration and detailed, step-by-step instructions, watch this helpful home-computing...more

In this clip, you'll learn a trick for upcycling your old hard drives into a RAID server. It's an easy process and this video presents a complete guide. For more information, including a full demonstration and detailed, step-by-step instructions, watch this helpful home-computing...more

In this clip, you'll learn how to transfer files to and from Microsoft Windows, Apple Mac OS X & Linux desktop or laptop computers. For more information, including a complete demonstration, and detailed, step-by-step instructions, as well as to get started using this trick yourself, take a...more

In this clip, you'll learn how to use VNC to remotely control an Apple desktop or laptop computer over the web. For more information, including a complete demonstration, and detailed, step-by-step instructions, as well as to get started using this trick yourself, take a...more

In this clip, you'll learn how to turn your laptop PC into a WiFi hotspot. For more information, including a complete demonstration and detailed, step-by-step instructions, and to get started turning your own laptop into a wireless hotspot (or hot spot), watch this handy home-computing how-to from the folks at CNET...more

In this clip, you'll learn how to set up a simple wireless network in a home or office. For more information, including a complete demonstration and detailed, step-by-step instructions, and to get started making phone calls over your own Internet connection, watch this handy home-computing how-to from the folks at CNET...more

In this clip, you'll learn how to get started using HyTrust. It's easy! So easy, in fact, that this helpful how-to can present a complete overview of the process in just over five minutes. For more information, including detailed, step-by-step instructions, take a...more

In this clip, you'll learn how to get started using Secure Computing's Secure Web Protection proxy service. It's easy! So easy, in fact, that this helpful how-to can present a complete overview of the app in just over five minutes. For more information, including detailed, step-by-step instructions, take a...more

In this clip, you'll learn how to get started using SkyRecon's Stormshield. It's easy! So easy, in fact, that this helpful how-to can present a complete overview of the app in just over four minutes. For more information, including detailed, step-by-step instructions, take a...more

In this clip, you'll learn how to get started using Symantec's Endpoint Protection Small Business Edition on your Microsoft Windows PC. It's easy! So easy, in fact, that this helpful how-to can present a complete overview of the app in just over four minutes. For more information, including detailed, step-by-step instructions, take a...more

In this clip, you'll learn how to get started using Dell Kace appliances to manage your desktop system images. It's easy! So easy, in fact, that this helpful how-to can present a complete overview of the app in just over five minutes. For more information, including detailed, step-by-step instructions, take a...more

In this clip, you'll learn how to get navigate and use the basic features and functions of the Symantec Altiris Client Management Suite. It's easy! So easy, in fact, that this helpful how-to can present a complete overview of the app in just over three minutes. For more information, including detailed, step-by-step instructions, take a...more

Want to test the security of your WEP WiFi wireless network? In this clip, you'll learn how to use the Backtrack Linux distro and the Aircrack-ng WiFi security app to crack a WEP key. The process is simple. For more information, including step-by-step instructions, and to get started testing the security of your own WiFi networks, watch this hacker's...more

In this clip, you'll learn how to use the BackTrack Linux distro and the Aircrack-ng WiFi security app to hack a WEP network. The process is simple. For more information, including step-by-step instructions, and to get started testing the security of your own WiFi networks, watch this hacker's...more

Learn how to use the Backtrack Linux distro and the Aircrack-ng WiFi security app to crack a WEP key. The process is simple. For more information, including step-by-step instructions, and to get started testing the security of your own WiFi networks, watch this hacker's...more

In this clip, you'll learn how to use the Backtrack Linux distro and the Aircrack-ng WiFi security app to crack a 64-bit WEP key. The process is simple. For more information, including step-by-step instructions, and to get started testing the security of your own WiFi networks, watch this hacker's...more

In this clip, you'll learn how to crack a WEP or WPA key on a GNU/Linux computer with GRIM WEPA. The process is simple. For more information, including step-by-step instructions, and to get started testing the security of your own WiFi networks, watch this hacker's...more

In this clip, you'll learn how to use the Backtrack 3 Linux distro and Aircrack-ng WiFi security app to crack the password to a WEP-protected wireless network. The process is simple. For more information, including step-by-step instructions, and to get started testing the security of your own WiFi networks, watch this hacker's...more

In this clip, you'll learn how to use the Backtrack Linux distro and the Aircrack-ng WiFi security app to crack a WEP key. The process is simple. For more information, including step-by-step instructions, and to get started testing the security of your own WiFi networks, watch this hacker's...more

Interested in finding out just how secure your WEP-protected wireless network is? Let this video be your guide. It's a simple process and this home-networking how-to will teach you everything you'll need to know. For specifics, including detailed, step-by-step instructions, and to get started cracking WEP networks with BackTrack yourself, watch this helpful video...more

Need some help figuring out the ins and outs of LAN networks? They're easy enough to understand. And this brief video tutorial from the folks at Butterscotch will teach you everything you need to know. For more information, and to learn more about LAN networks yourself, watch this helpful video...more

Need a hand figuring out how to set up a wired home LAN network? It's easy. And this brief video tutorial from the folks at Butterscotch will teach you everything you need to know. For more information, including detailed, step-by-step instructions, and to get started managing your own web pages with Google Sites, take a...more

Interested in setting up a WiFi network in your home or office? This brief video tutorial from the folks at Butterscotch will teach you everything you need to know. For more information, including detailed, step-by-step instructions, and to get started configuring your own wireless network, take a...more

Interested in setting up a network over your power line? This brief video tutorial from the folks at Butterscotch will teach you everything you need to know. For more information, including detailed, step-by-step instructions, and to get started setting up your own home network, take a...more

Check with your ISP about alternatives to the Internet. The speed of your Internet connection is the most important variable in your download speed. If you have dial-up Internet access, consider upgrading to a Digital Subscriber Line (DSL) or cable connection. Even if you already have cable, your ISP could have faster cable service available. Understand a fast connection. Connection speed is measured by the amount of data that can be transmitted per second, usually kilobits per second (Kbps) or megabits per second (Mbps). There are 1024 Kilobytes in a megabit. Most dial-up connections are 56 Kbps, while the cable can be as fast as 20 Mbps. When you contact your ISP, they should be able to tell you how fast their connections. But still dont forget that a KB is less than an MB. Close all open programs you need to download. This will free up your computer's resources to better manage data transfer. If possible, have the computer retrieve the files you need while you are away from your...more

Here are some quick steps that you can take in order to attempt to detect the location of a network fault. This example shows us a simple network configuration. We have a headquarters with a server farm. This is also where the network management system is located on the network. We also have two remote sites. Each site has users, and it is connected through an MPLS virtual private network: In this situation, let’s say that a syslog message comes into you main router at headquarters, identifying an internet issue. It tells you that the connection to “Site A” is down. Your NMS is showing green for that connection.  What should you do? Think critically. Where is this data being pulled from? It is possible that your remote site is actually fine. Should you trust a syslog message? Or should you collect polling data into your NMS? Using your NMS, poll “Site A” to see if the router or switch is down.In this instance, the router and switch is down: You must now determine whether or...more

Getting NetFlow data into your network performance management system is something every network engineer working with Cisco equipment should consider. But perhaps you don’t know enough about NetFlow? If that is the case, you can find more about Cisco’s NetFlow technology and how to properly use it to monitor your system and its bandwidth. For those of you familiar with NetFlow, who want to turn it on in your Cisco devices, here are some steps you can take. The number one question you should ask is if you have SNMP access to your router. In the case that you do, you can easily set up NetFlow using a free tool that can configure everything you need quickly. Now, if you don’t have SNMP set up on your devices, you will need to configure them using the command line: Open a command prompt and telnet into your router. Login to the device. 2. Go into privilege mode by typing in enable. This allows you to make configuration changes. 3.      Type in conf t to give...more

WMI is a great way to monitor any windows based application or server. You can use all sorts of performance counters to make sure that your servers are running smoothly and it’s pretty easy to use. Today, you’ll learn how to get set up quickly with a free tool called WMI Monitor. Run the executable for WMI Monitor. When you do this for the first time, you will be shown a wizard. After the main wizard screen, hit next. At this point you should put in the specific name or IP address of the server that you want to monitor. Also, you will need to enter authentication credentials for the server in question. WMI Monitor is now going to ask you what you want to analyze. It comes with a pre-packaged set of monitors.  You can also visit thwack to access user-created application monitors, or customize your own by browsing WMI counters. For the purposes of this tutorial, let’s go ahead and make our own.This option will bring you into the WMI browser. Use the filter option at the ...more

How likely is a situation where the entire internet is down? It could happen, but it is pretty unlikely when you start getting users who are telling you that there is a problem with the internet. You don’t have to tell users this, but their complaints about internet connectivity issues -- whether it is slow or simply not working -- is really a matter of perception. When problems like this occur, just remember these steps: 1. Check Your Core Router You need to take a look at all of the connections that are needed to interface your network with the internet. That includes core routers, gateway devices and firewalls. One of the great ways that you can stay on top of this is by creating your own custom workspace to monitor these devices within your network management tools. 2. Use Your Performance Monitor to Track Mission Critical Websites Ideally, you should be able to track some of the websites that are most frequently visited by your users. By putting these websites onto your...more

When you watch things on YouTube, you might not think about the fact that this could affect network performance. Did you know that one video that is only a few minutes can be as large as three hundred megabytes? One thing that is hard to notice about streaming video is the size of the files you’re viewing on video sites. This is especially true from a user’s perspective. That’s why you can see latency problems as well as jitter issues when a lot of people start looking at online video. So how can you prevent network traffic bottlenecks when that next action movie trailer or funny video goes viral? Traffic Filtering Yeah, that’s going to make you unpopular, but many organizations do it, and it’s your determination if you want to be the bad guy. Traffic filtering allows you to set up a customized view of network traffic so you can see who’s using the network and how.  WAN Optimization Get a handle on your network first. Here are some tips on network monitoring fundamentals.  Get a...more

Did you know that bandwidth utilization is a key statistic that network management systems report on? In terms of remote sites, this type of traffic analysis is very important to getting network performance operating at peak levels so that users are able to get what they need to done. Let’s look at this from the perspective of a user-reported default. In this case, say you have some remote sites in addition to your main location where your datacenter is located. A user from a remote location calls to report that the internet is down. You know that this is probably not really the case, especially if your network management system is not showing any problems.  Instead, try these steps: Telnet to the router at that remote location to see if it is up.Ask the user what he/she was trying to do on the internet. Getting a URL or other resource location is very helpful.If you can access that resource from headquarters or wherever you may be, there may be an internal network problem.This is...more

Here are some steps to use open source Nagios scripts with your Orion Application Performance Monitor. Using open source scripts are a great idea. Why? Because instead of having to spend time creating your own scripts, you can use tried and true ones that already exist. By doing this, you are essentially eliminating the trial and error that comes for writing scripts. Unless you are a script guru, open source is the way to go. Here are some tips, especially in terms of Orions’ Application Performance Management, that will allow you to get the right scripts implemented – fast. In this case, let’s say for example purposes that we are attempting to analyze the performance of a MySQL database on a Linux server. Leverage Google. Search for a script that does what you need it to do, and be detailed in your query. You may be surprised by what you find since the open source community is very large and dedicated to all things Linux. Decide which script fits what you are trying to do and...more

Virtual architecture is a great investment for organizations to make for their network infrastructure. At the same time, it presents an issue when thinking about how to properly monitor these virtual machines. Here are some great ways to use a network monitor tool to properly analyze these ever-increasing virtual environments. First, you will need to acquire the proper tools to monitor virtual environments. One such tool would be this free VM Monitor. Try it out and see if it works for you just to get started.Taking a look at this VM Monitor tool, you will see that it is capable of drilling down into a VMWare ESX virtual Server and giving you information about its vital stats, such as CPU usage, memory and network traffic. You can even take a look at the status of each VM with a quick glance by adding them individually into the tool and have them as line items.Although the free VM Monitor tool is helpful, it is possible that you may need full-fledged monitoring tools in order for you...more

Monitoring servers and the applications that reside on them is important to the overall security of your network. Network performance monitoring, as this practice is called, can keep you on your toes about potential problems. In order to do this, however, you must turn the Simple Network Management Protocol (SNMP) on in your server’s configuration. Here are some steps to do this on Windows servers: Go to Control Panel – Administrative ToolsOpen up Services Manager by clicking on Services in Administrative Tools.Check to see whether Simple Network Management Protocol is added as a service in the Manager. If you don’t see it in the list, you need to add SNMP as a component.To do this, go back to the main Control Panel menu and click on Add/Remove Programs.Click on Add/Remove Windows Components, which is the third icon over to the left in the window.This will open a Windows Components list. Scroll down until you get to Management and Monitoring Tools. Check this, and click on Details...more

You should encrypt everything. These are what you need: BackTrack 4,0, modify IP tables, Python and ARPspoofing. Program the PC to flip to forwarding mode. Adjust the programming in the IP tables. You are convincing the host and the client that the man (PC) in the middle is the host and capture passwords, user names and other information from unsuspecting clients. This program strips the "S" from "https" which make your computer vulnerable to hackers. You need to observe the address bar and make sure that it says "https" rather than "http". Use SSH, SSL or VPN tunnel to be...more

Many mobile phones now come equipped with a Bluetooth modem which can be configured easily in Ubuntu to access the internet without installing proprietary drivers or software. Check local Bluetooth availability on PC:Login as root and enter hciconfig in the terminal to check that the Bluetooth device in PC is on. Typical output should appear as shown below: hci0:7E:DF:51:02 ACL MTU: 1017:8 SCO MTU: 64:8 UP RUNNING PSCAN ISCAN RX bytes:957 acl:0 sco:0 events:26 errors:0 TX bytes:603 acl:0 sco:0 commands:26 errors:0 Discover the phone:Set the phone's Bluetooth to discoverable and enter hcitoolscan in the terminal. This will display the phone's name and MAC address (note it down). Verify dial-up networking (DUN) profile:Enter sdptool browse to view phone's Bluetooth profiles. IF DUN exists, it will be listed as follows: Service Name: Dial-up Networking Service RecHandle: 0*10002 Service Class ID List: "Dialup Networking" (0*1103) "Generic Networking" (0*1201) Protocol Descriptor List:...more

Getting a Playstation Portable to connect to your wifi network can be tricky. If you own a Buffalo router, this tutorial walks you through the process to get your PSP connected to your home wifi network. Now you can check your email and surf the web on your...more

Netflow technology allows you to monitor web traffic to your website - find out who comes to your site, where they're coming from and where they go afterwards. You can configure a Cisco router manually to monitor netflow going through the...more

VPN's are an invaluable set up for small business', and larger business', when it comes to keeping your information secure with remote employee's. This video details all of the info that you need to know about setting up and maintaining a great...more

Looking for the easiest way to find the fastest DNS server for your PC? With NameBench, it's simple! So simple, in fact, that this home-computing how-to from the folks at Britec can present a complete overview of the process in just over three minutes. For more information, including step-by-step instructions, watch this video...more

Interested in setting up Google's OpenDNS alternative, Google DNS, on a Windows PC? It's simple! So simple, in fact, that this home-computing how-to from the folks at Britec can present a complete overview of the process in just over four minutes. For more information, including step-by-step instructions, watch this video...more

Looking for an easy way to view and inspect your Windows computer's TCP and UDP ports? This clip will teach you everything you'll need to know. It's easy! So easy, in fact, that this home-computing how-to from the folks at Britec can present a complete overview of the process in just over four minutes. For more information, including detailed, step-by-step instructions, take a...more

Looking for instructions on how to reset Winsock & IP settings on your Windows XP PC? It's easy! So easy, in fact, that this home-computing how-to from the folks at Britec can present a complete overview of the process in just over five minutes. For more information, including step-by-step instructions, take a...more

Interested in creating a map of all of your Facebook friends? With Microsoft's Bing, it's easy! So easy, in fact, that this home-computing how-to from the folks at Britec can present a complete overview of the process in just over two minutes. For more information, including step-by-step instructions, take a...more