Thursday, 27 December 2012

How to use Qos (Quality of Service) on Router



Quality of Service (QoS) is a feature of routers and switches which prioritizes traffic so that more important traffic can pass first. The result is a performance improvement for critical network traffic. QoS equipment is useful with VoIP phones or in LANs with high volumes of local traffic.

SETTING UP QOS 

The QoS settings can be found under Applications & Gaming -> QoS.
There are many ways to assign priority to your VOIP system.  I just used the IP address as shown below.  192.168.1.10 is the LAN private IP of the Asterisk system.


With the priority of the Asterisk box set to high, we should be all set.  It turns out that unless you cap the bandwidth, you will still have QoS problems.  Enter around 85% of your up and down bandwidth in the Uplink and Downlink boxes.  Capping the bandwidth is required to keep the latency low.  Otherwise, your bandwidth is filled up with large packets and the priority settings are not effective for VOIP traffic.  See http://www.dd-wrt.com/wiki/index.php/Quality_of_Service for more information.
With the above settings, VOIP calls are now clear even with other concurrent activities.
UPDATE:
Several people have reported being able to install dd-wrt on v6 WRT54 routers and the QoS configuration is the same.


Saturday, 13 October 2012

How to Get Better Wireless Signal




Like all sufficiently advanced technologies, Wi-Fi can feel like magic. But Wi-Fi isn’t magic – its radio waves. A variety of things can interfere with these radio waves, making your wireless connection weaker and more unreliable.

The main keys to improving your wireless network’s signal are positioning your router properly — taking obstructions into account — and reducing interference from other wireless networks and household appliances.

Wireless Router Positioning

Your wireless router’s positioning can greatly affect your coverage area and the strength of your signal. Follow these quick tips to position your router for the best signal.

  • Place the router in the middle of your house. If you place the router in a room off to the side of your house, you won’t get as strong a signal on the other side of your house.
  • Position the router’s antenna vertically, so that the antenna is standing straight up. Many antennas can be adjusted and lie horizontally, but standing straight up is generally the ideal position.
  • Elevate your router away from floors. You’ll get better reception if the router is on a desk, not on the floor.

You should also pay attention to the kinds of materials the router is near. For example, placing the router on a metal desk or up against a metal wall will cause problems. Signals can travel through a wood desk easily, but metal will obstruct the signals.
Other types of obstructions can also cause problems. For example, if there’s a metal filing cabinet between your computer and the router, you may not receive a wireless signal. The same applies to other types of dense objects.

Interference From Other Wireless Networks

Interference from other wireless networks in the area can cause issues with your wireless signal. To determine whether interference is occurring, you can use an app like Wi-FiAnalyzer for Android. It will show you the wireless channels nearby networks are using and recommend the ideal network for you to use — one that isn’t being used by as many networks. This app will also allow you to walk around the area and see where you get the best signal and where the signal is weakest – you can do this with any other device, too.
If multiple wireless networks are competing for the same channel, this can cause problems. To fix this, you can change the wireless channel in your router’s web interface. You can do this even if you don’t have access to a wireless-analyzing app – change the signal to a different channel and then see if your wireless connection improves.

Interference From Household Appliances

A variety of household appliances can cause wireless interference, including cordless phones, baby monitors, and microwave ovens. Depending on the positioning of your wireless router, your networked device, and the appliance, you may even have the wireless network cut out when the microwave or cordless phone is in use.
Problems with cordless phones can be solved by replacing your phones with phones that operate on a different frequency, such as 900 MHz or 1.9 GHz. Cordless phones using the 2.4 Ghz frequency will interfere with wireless networks.
Problems with microwaves can often by solved by positioning the your devices such that the microwave isn’t between your router and the device. it’s also possible that a new microwave will help, if the new microwave has better shielding.
Other devices can also cause problems. For example, older Bluetooth devices can interfere with nearby Wi-Fi signals, although newer Bluetooth devices don’t.

Repeaters, Antennas, and Reflectors

If you need to cover a large area with a wireless signal and your router just isn’t cutting it, you can buy a wireless repeater or range extender. These devices repeat the wireless signal, extending its area. You don’t even need special devices for this – if you have some old routers around, you can use multiple routers to extend your Wi-Fi network.
Depending on your router, you may be able to attach an improved antenna that gives your signal additional range. You can also try building a Wi-Fi reflector that reflects the signal in a specific direction.

Wednesday, 10 October 2012

Speed Up Your Internet with Google Public DNS


Are you looking for a faster way to browse the Internet and have pages load faster? If so, you might be interested in trying out Google Public DNS, here we will take a look at adding it to your router or home computer.
DNS (Domain Name System) translates an IP address to an easy to remember hostname. If you use your ISPs DNS settings by default, it may not be the fastest way to get to your favorite sites. We have previously recommended the service OpenDNS as speeds are usually faster than your ISP and it offers several other cool options. Google has recently launched a free public DNS service, and we’ll take a look at setting it up on your PC or router.
Add Google DNS to a Window Computer
To add Google Public DNS to your Windows 7 machine, right-click on Network and choose Properties.
Alternatively, you can enter Network and Sharing Center into the search box in the Start Menu.
The Network and Sharing Center opens and you’ll want to click on Change adapter settings which is located on the right side of the screen.
Now right-click on Local Area Connection and select Properties. If you have a wireless connection, right-click on Wireless Network Connection and click Properties.
The Local Area Connection Properties screen opens and you’ll want to highlight Internet Protocol Version 4 (TCP/IPv4) then click the Properties button.
The Internet Protocol Version 4 Properties window comes up. If you already have DNS settings listed, make sure to copy or write them down in case you want to switch back. Select Use the following DNS server addresses and type in the following for Preferred and Alternate DNS server:
Note: According to Google you can interchange the Primary and secondary address, but don’t use the same number for both.
Preferred DNS Server: 8.8.8.8
Alternate DNS Server: 8.8.4.4
Click Ok and then close out of the remaining windows and reboot your system, then you’ll want to test out the settings. Basically browse around to your bookmarked sites and make sure they display properly.
Add Google DNS to Your Router
In this example we are using a Belkin Wireless Router. Each router varies but the principle is the same. Go into your router configuration settings by typing the Router IP into your browser. Mostly in Home Router it will 192.168.1.1..otherwise if you want to check how to get this IP Address then Go to Network Place Properties and Double Click the "Local Area Network" Click the "Support" tab and there you will find "Default" in the default column IP Address is you Router IP address
Open you Browser and put the 192.168.1.1 IP and press Enter, Put the Username & password, Go to the WAN Configuration and find the DNS setting 
Now enter in the primary and secondary DNS addresses and apply changes. Again according to Google you can interchange the Primary and secondary address, but don’t use the same number for both. We set ours up as the following:
Primary:  8.8.8.8
Secondary: 8.8.4.4
After you apply the DNS changes your router may need to restart, where in the case of a Belkin it is a 40 second reboot. After the router reboots, go through and test the settings to verify they work.

Five Mostly Used VPN Apps


Many businesses depend upon the ability to access their servers and documents from multiple locations. To enable that, many take advantage of the Virtual Private Network (VPN). When proposing this to end users, it is very often met with fear and uncertainty. It is change and people don't like change. To make that easier for end users, selecting the right VPN client is key. Some VPN servers (such as Sonicwall and Fortinet) require you use their own proprietary clients. But other VPNs allow the use of third party clients. As for the third-party clients, there are quite a lot of them out there. Some are free, some are cheap, some are worth your time, and some are not. I have gathered together five of the clients I believe to be worth looking into. Each client may or may not meet your VPN needs – that will depend upon the server you are running. But each client offers plenty of features and each offers different levels of user-friendliness.

OpenVPN Client


OpenVPN Client is a full-featured SSL VPN client that seamlessly integrates into an OpenVPN server. This client is as simple to use as any VPN Client and makes connecting to the OpenVPN server a snap. OpenVPN Client is free and is available for Windows, Mac, and Linux. For Windows, this client is compatible with all versions of Windows, including Windows 7, Windows Vista, Windows XP, and Windows 2000. Of course, you will have to have a working OpenVPN server to connect to. Fortunately, that server is incredibly easy to set up.

Gadmin VPN Client


Gadmin VPN Client is another means to connect to the OpenVPN server. This tool is part of the Gadmin Tools suite of administration tools (you can even install a Gadmin VPN Server GUI to help you easily set up an OpenVPN server).
This particular client tool is available only for the Linux platform, but offers tons of options for configuration. Of course, because of the amount of available options, Gadmin VPN Client isn't the best tool for users who are less familiar with how VPNs work.

Shrew Soft VPN Client

Shrew Soft VPN Client is an easy to use client for IPSec Remote Access VPN servers. This client is available for Windows 7, Vista, XP, 2000 (both 32 and 64-bit flavors) as well as the Linux platform.
This client was originally developed to connect to open source servers such as FreeSWAN and OpenSWAN, but now can connect to VPNs by Cisco, Juniper, Checkpoint, Fortinet, Netgear, Linksys, Zywall and many others. Shew Soft VPN Client is free.

VPN X Client

VPN X Client is one of two VPN clients on the list that has a price attached. That price depends upon the license type and how many licenses you need (check out the Pricing page and check outthis comparison matrix.) The VPN X Client will only connect to the VPN X Server. You will find the VPN X Server quite easy to set up and secure enough for small to medium sized businesses.

Viscosity VPN Client


Viscosity VPN Client is a cross-platform client (Windows and Macs) that makes connecting to an OpenVPN server a breeze and will only cost you $9.00 USD.
Viscosity is used in Fortune 500 companies, continuously monitors your OpenVPN connection, fully integrates with OS X's advanced DNS system, can work with AppleScript and Batch/Vbs scripts, and offers Smartcar/token (PKCS#11) support, multiple connections, proxy integration, IPv6, and more.
Bottom line
Having a VPN doesn't mean you have to use a client your end users can't grasp or will put you and your IT budget out of business. These five clients work with different VPN servers and offer different levels of complexity and costs. If you're looking for a new VPN client, or replacing your VPN architecture all together, give these clients a look to see if one of them will fill a hole in your IT infrastructure. 

Tuesday, 9 October 2012

How to Reconize Network Cable Category


Cables are commonly used to carry communication signals within LAN. There are three common types of cable media that can be used to connect devices to a network and they are coaxial cable, twisted-pair cable, and fiber-optic cable.

  • Coaxial cable

Coaxial cable looks similar to the cable used to carry TV signal. A solid-core copper wire runs down the middle of the cable. Around that solid-core copper wire is a layer of insulation, and covering that insulation is braided wire and metal foil, which shields against electromagnetic interference. A final layer of insulation covers the braided wire.
There are two types of coaxial cabling: thinnet and thicknet. Thinnet is a flexible coaxial cable about ¼ inches thick. Thinnet is used for short-distance. Thinnet connects directly to a workstation’s network adapter card using a British Naval Connector (BNC). The maximum length of thinnet is 185 meters. Thicknet coaxial is thicker cable than thinnet. Thicknet cable is about ½ inch thick and can support data transfer over longer distances than thinnet. Thicknet has a maximum cable length of 500 meters and usually is used as a backbone to connect several smaller thinnet-based networks.
The bandwidth for coaxial cable is 10 mbps (mega bits per second).

  • Twisted Pair Cable

Twisted-pair cable is the most common type of cabling you can see in todays LAN networks. A pair of wires forms a circuit that can transmit data. The pairs are twisted to provide protection against crosstalk, the noise generated by adjacent pairs. When a wire is carrying a current, the current creates a magnetic field around the wire. This field can interfere with signals on nearby wires. To eliminate this, pairs of wires carry signals in opposite directions, so that the two magnetic fields also occur in opposite directions and cancel each other out. This process is known as cancellation. Two Types of Twisted Pairs are Shielded Twisted Pair (STP) and Unshielded Twisted Pair (UTP).
Unshielded twisted-pair (UTP) cable is the most common networking media. Unshielded twisted-pair (UTP) consists of four pairs of thin, copper wires covered in color-coded plastic insulation that are twisted together. The wire pairs are then covered with a plastic outer jacket. The connector used on a UTP cable is called a Registered Jack 45 (RJ-45) connector. UTP cables are of small diameter and it doesn’t need grounding.  Since there is no shielding for UTP cabling, it relies only on the cancellation to avoid noise. 
UTP cabling has different categories. Each category of UTP cabling was designed for a specific type of communication or transfer rate. The most popular categories in use today is 5, 5e and 6, which can reach transfer rates of over 1000 Mbps (1 Gbps).

  • Optical Fiber Cabling

Optical Fiber cables use optical fibers that carry digital data signals in the form of modulated pulses of light. An optical fiber consists of an extremely thin cylinder of glass, called the core, surrounded by a concentric layer of glass, known as the cladding. There are two fibers per cable—one to transmit and one to receive. The core also can be an optical-quality clear plastic, and the cladding can be made up of gel that reflects signals back into the fiber to reduce signal loss. There are two types of fiber optic cable: Single Mode Fibre (SMF) and Multi Mode Fibre (MMF). 1. Single Mode Fibre (SMF) uses a single ray of light to carry transmission over long distances. 2. Multi Mode Fibre (MMF) uses multiple rays of light simultaneously with each ray of light running at a different reflection angle to carry the transmission over short distances.

Category Of Cables 


Almost anyone who has connected to the Internet through a broadband connection (like cable or DSL) has used an Ethernet cable to do it. You have connected your PC’s network interface card (NIC) to your cable modem, DSL modem, or home router with an Ethernet cable.  Because of the commonality of this, if I say “use an Ethernet cable” you have a picture of a cable in your mind. However, you should know that there is more than one type of Ethernet cable.

  • Category 1 (CAT 1, Level 1)


Category 1 cabling (CAT1), one of five grades of UTP cabling described in the EIA/TIA-586 standard, is used for telephone communications and is not suitable for transmitting data.
Analog voice (POTS) Basic Rate Interface in ISDN, Doorbell wiring
Maximum Rate of Data: Up to 1Mbps (1 MHz)

  • Category 2 (CAT 2, Level 2)

Category 2 cables, also known as Cat 2, or Level 2, is a grade of unshielded twisted pair cabling designed for telephone and data communications. The maximum frequency suitable for transmission over Cat 2 cable is 4 MHz, and the maximum bandwidth is 4Mbit/s. Cat 2 cable contains 4 pair of wires, or eight wires total. Though not an official category standard established by TIA/EIA, Category 2 has become the de facto name given to Level 2 cables originally defined by Anixter International, the distributor. Mainly used in the IBM cabling system for Token Ring networks.
Maximum Rate of Data: Up to 4Mbps (4 MHz)
  • Category 3 (CAT 3)

Cat 3 cable is an unshielded twisted pair cable (UTP). UTP is used in scenarios where electromagnetic interference is of little concern; the wire architecture shields the individual wires from crosstalk. In using UTP, network architecture spending can remain low while offering sufficient reliability for short- to mid-range signal transmission.

Voice Transmission Cat 3 cables are prominently used as telephone wiring, as it works especially well for voice transmission. Cat 3 is capable of supporting frequencies up to 16 MHz; this is more than sufficient for telephone calls.
This category was widely used among computer network administrators in the 1990s.


  • Category 4 (CAT 4)

Cat 4 was mainly used in token ring networks and the cable consists of four unshielded twisted-pair (UTP) wires, with a data rate of 16 Mbit/s, and performance of up to 20 MHz.
  • Category 5 (CAT 5 )

CAT5 (also, CAT 5) is an Ethernet network cable standard defined by the Electronic Industries Association and Telecommunications Industry Association (commonly known as EIA/TIA). CAT5 is the fifth generation of twisted pair Ethernet technology and the most popular of all twisted pair cables in use today.
CAT5 cable contains four pairs of copper wire. It supports Fast Ethernet speeds (up to 100 Mbps). As with all other types of twisted pair EIA/TIA cabling, CAT5 cable runs are limited to a maximum recommended run length of 100m (328 feet).
  • Category 5 (CAT 5e)

This category is an enhanced version of Cat 5 that prevents interference between one unshielded twisted pair to another twisted pair running in parallel within the same cable (Far End Crosstalk - FEXT).
As network and telecommunication applications become more complex, increased data transport is required to accommodate fast data transfer speeds. CAT 5 is typically used in Local Area Networks (LAN) and premise cabling. Category 5e cabling is an enhanced version of CAT 5 cabling. The main difference between CAT 5 and CAT 5e cabling is the specifications. The amended specifications provide full-duplex Fast Ethernet cabling. CAT 5e uses better insulation to improve attenuation and crosstalk performance. An additional plastic rib has been placed in the center of CAT 5e cabling to reduce crosstalk. A twist internal to the jack prevents untwisting and crosstalk to other wire pairs. Some of the benefits of CAT 5e interconnect include:
  • Speed: can carry speeds up to 100 Mb/second, will expand to 10 Gigabits/second in the future.
  • Bandwidth: greater bandwidth than CAT 3, 4
  • Distance: Cables support distances up to 50 ft
  • Price: CAT 5e cabling is much cheaper than fiber and coax cable
  • Reliable: the most implemented and proven standards
  • Size, weight and flexibility: smaller connectors allow for high port density, the cable is lightweight, and the jacket is flexible hp CAT 5e networking and telecommunications connectivity cables
  • Better noise immunity: twisted pair cabling and balanced transmission provide less noise


  • Category 6 (CAT 6)


Short for Category 6, Cat-6 network cabling is used as the cabling infrastructure for 10BASE-T (Ethernet), 100BASE-TX (Fast Ethernet),1000BASE-T (Gigabit Ethernet, or GbE) and 10GBASE-T (10-Gigabit Ethernet, or 10 GbE) networks. The Cat 6 standard provides performance of up to 250MHz (500 MHz for the newer Cat 6a standard) and can be used up to a maximum length of 100 meters (55 meters for 10GBASE-T networks).
The Cat 6 standard was first released in 2002 as part of the Telecommunications Industry Association’s TIA/EIA-568-B.2-1 document specification.  Cat 6 is backward compatible with the Cat 3, Cat 5 and Cat 5e cable standards, and as with Cat 5 and Cat 5e cabling, Cat 6 cables consist of four unshielded twisted pairs (UTP) of copper wire terminated by RJ45connectors. 
In addition to its support for higher performance than the Cat 5 specification, the Cat 6 standard also includes more stringent specifications for crosstalk and system noise. While Cat 6 is expected to supersede both Cat 5 and Cat 5e cabling in the future, all three types of cables continue to be popular for use in network installations.
Category 6 cables are by definition a twisted pair, 100 Ohm cable which has transmission parameters specified up to 250 MHz, Category 6 cable is also a recognized cable in addition to those specified in 4.2.2 of ANSI/TIA/EIA-568-B.2.

  • Category 6e (CAT 6e)


Category 6E cables also exceed TIA/EIA-568-B.2-1 Category 6 and ISO/IEC 11801 Class E performance requirements by substantial margins on all parameters. The AMP NETCONNECT Category 6 System complies with all of the performance requirements for current and proposed applications such as Gigabit Ethernet (1000BASE-Tx), 10 and 100BASE-Tx, token ring, 155 Mbps ATM, 100 Mbps TP-PMD, ISDN, analog and digital video, and analog and digital voice

  • Category 7 (CAT 7)


Category 7 cable (Cat 7), (ISO/IEC 11801:2002 category 7/class F), is a cable standard for Ethernet and other interconnect technologies that can be made to be backwards compatible with traditional Cat 5 and Cat 6 Ethernet cable. Cat 7 features even more strict specifications for crosstalk and system noise than Cat 6. To achieve this, shielding has been added for individual wire pairs and the cable as a whole.

The Cat 7 cable standard has been created to allow 10 Gigabit Ethernet over 100 m of copper cabling (also, 10-Gbit/s Ethernet now is typically run on Cat 6a). The cable contains four twisted copper wire pairs, just like the earlier standards. Cat 7 can be terminated either with 8P8C compatible GG45 electrical connectors which incorporate the 8P8C standard or with TERA connectors. When combined with GG45 or TERA connectors, Cat 7 cable is rated for transmission frequencies of up to 600 MHz.
Category 7a (or Augmented Category 7) operates at frequencies up to 1000 MHz, suitable for multiple applications in a single cable including 40 Gigabit Ethernet, 100 Gigabit Ethernet, and CATV (862 MHz). Simulation results have shown that 40 Gigabit Ethernet is possible at 50 meters and 100 Gigabit Ethernet is possible at 15 meters. Mohsen Kavehrad and researchers at Pennsylvania State University believe that either 32 nm or 22 nm circuits will allow for 100 Gigabit Ethernet at 100 meters.
 This cable type is a standard for Ethernet and other interconnect technologies, that are backward compatible with traditional Cat 5 and Cat 6 Ethernet cables. As it has more strict specifications for crosstalk and system noise than Cat 6 and Cat 5e, its cables and the wires, within are completely shielded. the cable contains four twisted copper wire pairs and supports up to 600Mhz.




Monday, 24 September 2012

Commtest | Test Network Speed


CommTest is a very simple program but is nevertheless quite useful if you want to test the network speed between two computers. All you have to do is start the tool on both machines and then establish a connection from one of the computers to the other by entering the IP address or the domain name. Make sure that no firewall is in the way or that port 65000 is open.



CommTest will then immediately start uploading and downloading data and test the network speed in KB/s. You can also see the bytes and packets that have been sent and received. The tool is supposed to be able to measure the latency, but that didn’t work when I tried it. This was probably due to the fact that I tested it in a virtual environment and so the latency might have been just too small to be measurable.
I tried CommTest 1.2 on Windows 7 and Windows Server 2008 R2.
If you just want to test the network speed to the Internet, then the online tool speedtest.net is the thing for you.

How to Detect IP Address Conflict on Network


Each device connected to a network is assigned a unique IP address to identify it to the network. When one IP address is accidentally assigned to more than one device, an IP address conflict occurs. If your computer is using an IP address that is conflicting with another device, you will get a pop-up error telling you that the system has detected a conflict. To find out where the conflicting device is, check the system log for your computer and look up the conflicting device's MAC address by using the IPconfig command.


Find Which Device or User trying to Conflict your Network IP Address

The way to understand, the IP Conflicts.
  • Access the Control Panel through the Start Button or you can reach with command prompt (Go to the "Run" and type "control" and press enter)
  • Select the "Administrative Tools" on List
  • Again select the "Event Viewer" 
  • Select the "System" Option in Event Viewer (Local)
  • You find the "Red" Error in Source "Tcpcip" double click that one. 
  • Now read the description you will find the IP address which is conflict and the Source Mac Address also you will find, Which Hardware try to conflict you IP Address. 
  • After get the Mac address download the IPScanner and search the Mac address.
  • If you find the Mac address then this user or device try to conflict you IP Address. 

Tuesday, 11 September 2012

Network Diagram | 6 Free Diagram Application for Network


At some point, every administrator will need to diagram a network. For some, it's their primary duty, and they tend to rely on powerful, But for those who need to use a diagramming tool only occasionally, a cheaper solution is best. Luckily, there are several free apps that handle the task well.
Here are five tools that can help you diagram your network without breaking your budget. Some are Windows-only, while others are cross platform.

CADE was developed primarily as a CAD tool, but it also serves as a handy network diagramming tool. It's a 2D vector editor for Windows. Although it doesn't have all the bells and whistles of some costlier tools, it can handle the task of diagramming your network with ease.



Dia (Figure B) is an open source, GTK+ diagramming tool that has a shallow learning curve and can help you create basic network diagrams. Like CADE, Dia was inspired by Visio — but with a much more casual approach and feel. Dia loads and saves XML formatted documents that are gziped by default to save space. Dia is also available for Linux, Mac, and Windows.



Diagram Designer (Figure C) is another freeware tool that suffers (like Dia) from looking a bit on the outdated side. But Diagram Designer’s ease of use should certainly make up for the old-school feel of the application. DD features include customizable template objects, a spell checker, import/export (WMF, EMF, BMP, JPEG, PNG, MNG, ICO, GIF, and PCX), a slide show viewer, a graph plotter, a calculator, MeeSoft Image Analyzer integration, and compressed file format.


Gliffy (Figure D) is the only Web-based tool on this list. It’s easy to use and it works on any platform. With the ability to drag and drop shapes from numerous object libraries, you can have your network diagram ready in no time. You can use Gliffy for free, but if you really want to get into creating some diagrams, you may want to pony up the $4.95/month fee for 200 diagrams, 200 MB of storage, public and private diagrams, and unlimited collaborators.


yEd (Figure E) is a Java-based tool that’s available for Windows and Linux. It has a great user interface and features diagram creation, auto-layout, data import (GraphML, Excel XLS, GEDCOM, GML, XML), and data export (PDF, SWF, JPG, GIF, BMP, and HTML image maps). The auto-layout feature is particularly cool. It uses a wide range of sophisticated layout algorithms to automatically arrange your diagrams, saving you time and effort.



Office Visio 2007 Office Visio Professional 2007 is helping IT and business professionals worldwide visualize, analyze, and communicate complex information, systems, and processes. Extend Office Visio 2007 programmatically or integrate it with other applications to fit your industry-specific scenarios. Develop your own custom solutions and shapes, or use those from Visio Solution Providers. Embed and program the Visio drawing environment to include the power of Visio in any smart client application.


The all above tools are free for use, Use these tools and describe you network diagram and each network point, full feature and support on Windows and Mac OS.

Wednesday, 22 August 2012

How to Find Your Computer Public & Private IP Address ?


 How to Find Your Computer Public & Private IP Address ?


An IP address (or Internet Protocol address) identifies each networked computer and device on a network. When computers communicate with each other on the Internet or a local network, they send information to each other’s IP addresses.
Your computer likely has public and private IP addresses. You’ll need the IP address if you’re hosting server software – the client computers will need your computer’s IP address to connect to it.

Public vs. Private IP Addresses


IP addresses can be either public or private. “Public” means an IP address can be reached from the Internet, while “private” means it can’t. For example, in a typical home network, a router has a public IP address on the Internet. The computers, smartphones, game consoles, and other devices behind the router all have unique private IP addresses on the home network. The router acts as an intermediary, forwarding traffic to the local IP addresses that request it. From an outside perspective, all devices on the home network are communicating with the Internet from a single public IP address.
Assuming you’re behind a router performing network address translation, you have two IP addresses that matter. Your computer’s IP address is likely a private IP address, probably starting with 192.168 — is a range of IP addresses specially allocated to private networks. You also likely have a public IP address, which is used when communicating with other computers over the Internet.



For example, if you’re hosting a server on your computer, people on the Internet will need the public IP address from your router to connect to your server. People behind your router — on the same local network as your computer — will need the local IP address from your computer to connect.
If your computer is connected directly to the Internet with no router sitting in between, your computer’s IP address is a public IP address.

Finding Your Private IP Address

To find your computer’s IP Address on Windows, open the Control Panel and select View network status and tasks.



Click the name of your Internet connection to view its status.



Click the Details button in the connection’s status window.



You’ll find the IP address listed in the Network Connection Details window – look for the IPv4 Address field


A quick way to find your IP address in Windows is by running the ipconfig command in a Command Prompt window. You’ll see your IP address in the IPv4 Address row beneath the name of your connection.


 Finding Your Public IP Address




The easiest way to find your public IP address is by asking a website, since that website sees your public IP address and can tell it to you – for example, you can search for what is my ip or what is my ip address on Google. Google will display your public IP address.

You can also access your router’s administration page to find this information. This page displays your public IP address and other information about your Internet connection. Different routers have different administration page layouts and different default local IP addresses – consult your router’s manual if you need more information.




Unlike street addresses, IP addresses aren’t necessarily fixed. Your Internet service provider may regularly assign you a new IP address, just as your router may occasionally assign your devices new IP addresses.

For More Help see the Complete video ...

            


Saturday, 4 August 2012

How to Find Host Name through the IP Address in your LAN using Command Prompt

How to Find Host Name through the IP Address in your LAN using Command Prompt

You are working in a MNC and  handling largest network in that company and all computer connected with LAN and you configure the proper computer name for user identification. Now if you want to check the computer name through the IP Address than is very easy. 

Open your computer command prompt which connect with same network. 


Type the desire network client PC ip address with this command "nbtstat -a (Desire IP Address)"

Press the enter and get the host name of desire IP Address.


Tuesday, 10 July 2012

How to Speed up slow Home Network ?


How to Speed up slow Home Network ?


So how to speed up network ? Nothing is as annoying as slow network connection. Even if you have good hardware, you will not enjoy the real speed of your computer if your Internet connection is slow. Sometimes the only way to make things faster is to upgrade your broadband plan. However, there are some tips how to speed up network that really make a difference without costing anything. Here they are.

Remove My Network Places shortcuts


If you are wondering how to speed up network and make sharing files faster, you should remove all shortcuts from My Network Places. These shortcuts are created automatically and most of the time they are not needed. Not to mention that they often become invalid. And when they become invalid, Windows still searches for them even when they are never shared anymore. This slows things down. To remove these shortcuts, highlight them and press Delete on your keyboard.

Reset your network


If you are thinking how to speed up network when your Internet becomes very slow all of a sudden, you should reset your network by restarting your router. That’s easy enough - simply disconnect from the Internet and power down your PC. Then restart your router by switching it off and on again. Wait for the router to fully boot and start your computer. The speed should be back to normal.

Check your router and home phone for possible conflicts



Another suggestion how to speed up network. Sometimes your Internet connection can become slow because of home phone and router conflicts. This happens when your router and your cordless phone use the same frequency. If that’s the case, it can cause your Internet connection to slow down every time your phone is used. So, check your phone’s technical specs and see if there are any conflicts. If the phone uses the 900Mhz frequency, then it shouldn’t be affecting your router. But if your phone is using 2.4Ghz or 5.8Ghz, then it may be the cause of slow Internet connection. To fix the problem, try moving the phone to a different room or buy a different phone for your house.

Upgrade the firmware for your router



Another answer to the how to speed up network question is upgrading the firmware for your router. Quite often your network can become slow if your router’s firmware is out of date. That’s why you should check your router manufacturer’s site every now and again for firmware updates and apply them as soon as they are issued. Just make sure that you are applying the correct update for your model.

How to speed up network even more? Perform PC maintenance!



Even if you are on a fast broadband plan, browsing the Web won’t be fast if your computer is slow. So another way how to speed up network has little to do with the network itself – you simply need to perform some PC maintenance. Believe it or not, deleting temporary files, defragmenting your hard disk and running PC speedup software can speed up your Internet connection a great deal.
These simple how to speed up network tips will make using your network and browsing the Web faster and a lot more enjoyable.