| So first, here are a couple of things
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| | computer has 65536 ports (numbered 0 to
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| that you can do after you finish this
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| | 65535). When a computer attempts to talk
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| section.- You can configure BitTorrent to
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| | to another computer, the attempt is
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| give you excellent speeds- You can
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| | always initiated along with a port
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| configure your computer to play
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| | number.Forwarding Ports Lets assume that
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| multiplayer games over the internet- You
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| | a computer on the Internet needs to
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| can setup your computer as a terminal
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| | initiate a connection to a specific
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| server (for remote desktop connections)-
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| | software on your computer. The software
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| and many many more cool stuff!!This
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| | in discussion uses port 12345. For
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| tutorial consists of 2 sections1.
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| | simplicity, we will call the initiating
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| Understanding Port Forwarding2.
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| | computer as ClientX, and your computer as
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| Implementing Port Forwarding on common
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| | the ServerX. As we discussed earlier,
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| routersWhat is portforwarding?In one
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| | clientX only sees (and knows) the
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| sentence, portforwarding makes the
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| | external IP address i.e. the IP address
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| internet see your computer as if it were
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| | of your router. It tries to initiate a
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| directly connected rather than being
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| | connection to that IP address with the
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| connected though a router. For the same
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| | port number 12345. However, your router
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| reason, if you dont have a router, and
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| | recieves this request, and sees 4
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| your computer IS directly connected to
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| | computers in your house connected to the
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| the Internet, then you wont need this
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| | router. The router is not able to figure
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| tutorial.A little explanation: When a
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| | which computer the connection from
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| computer is connected to the internet, it
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| | ClientX was intended for! So it simply
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| is assigned a unique address called the
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| | drops the connection.Port forwarding is a
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| IP address. This enables other computers
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| | setting in the router which you can
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| on the internet to communicate with it
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| | change to prevent this from happening. By
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| and send packets to it and so on... An IP
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| | doing this, you can tell the router that
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| address has the format ###.###.###.###.
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| | any connections for port 12345 has to be
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| It looks like four sets of numbers,
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| | forwarded to ServerX. Now when the router
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| separated by a dot. Each set can have a
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| | recieves a request for a connection on
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| value between 0 and 255.Usually the
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| | port 12345, it checks its table and sees
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| internet service provider is the guy who
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| | your entry saying that all connections
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| assigns you an IP address for your
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| | for port12345 have to be forwarded to
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| connection. However, he gives you only
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| | serverX. Hence it routes the connection
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| ONE ip address and this gets assigned to
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| | accordingly!Here we'll see how to do
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| the cable/dsl modem at your house. If you
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| | portforwarding on most routers. Scenario
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| directly connect your computer to the
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| | : Lets say you need to forward port 6889
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| cable/dsl modem, you are using this IP
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| | to a computer whose Internal IP is
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| address to communicate with other
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| | 192.168.1.10.Step 1: Find your gateway IP
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| computers on the internet. However, you
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| | address. To get this, in windows, select
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| can connect only one computer to the
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| | Start > Run. Type in "CMD" and hit enter.
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| cable modem at any given time. So you go
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| | Inside the command window, type
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| to the nearest store and buy a
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| | "ipconfig" and hit enter. The screen will
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| router.Role of the router A router
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| | show you the default gateway. Note this
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| connects to the cable/dsl modem and
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| | down.Step 2: Open Internet explorer.
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| splits the one internet connection into
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| | Enter your gateway from Step 1 in the
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| multiple connections so all the computers
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| | address bar, and hit enter. A popup
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| in your house can enjoy internet
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| | window will ask you to authenticate into
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| connectivity simultaneously. Once you get
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| | your router with a username and password.
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| the router, you connect the router to
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| | Enter the username and password. If you
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| your cable/dsl modem, and all your
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| | dont remember, try the default ones
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| computers to the router.Internal and
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| | below:Linksys router : Default username
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| External IP addresses Once you start
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| | "" password "admin"
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| using a router, the IP address given by
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| | NetGear router : Default username
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| your internet service provider gets
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| | "admin" password"password"
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| assigned to the router. This IP address
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| | Belkin router : Default username ""
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| is called the External IP address, as it
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| | password""
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| is part of the external network between
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| | D-Link router : Default username "admin"
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| your router and the Internet. The router
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| | password""
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| in turn assigns new IP addresses to the
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| | Gateway router : Default username
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| computers connected to it. These
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| | "admin" password"admin"
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| addresses are a part of your Internal
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| | If you cant remember the password, post
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| Network, and are called Internal IP
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| | it on the forum at and someone will help
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| addresses. By set laws, an Internal IP
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| | you!Step 3:For Belkin routers, select
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| address may start with the numbers
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| | virtual servers from the left menu. Enter
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| 10,128, or 192. All the other
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| | something for description. Type "6889" or
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| combinations are used for external
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| | the required port number in both fields
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| addressing.For example, my external IP
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| | for inbound port. Do the same for the
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| address is 68.36.145.156. This IP address
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| | Private port fields too. Select the
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| is assigned to my router. I have two
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| | connection type from the drop down. If
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| computers connected to the router, and
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| | you dont know what you need, try UDP. If
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| they have the IP addresses 192.168.0.10
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| | that doesnt work, come back and try TCP.
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| and 192.168.0.11. These are my internal
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| | In the private IP address field, enter
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| addresses.The Port conceptEven when you
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| | the computer to which you need the
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| use a router to connect many machines to
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| | connection forwarded. In our case, this
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| the internet, other computers on the
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| | is 192.168.1.10Linksys routers, select
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| internet see one single machine with the
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| | "Application and Gaming" from the top
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| external IP address of the router. They
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| | menu, and the select 'portrange
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| dont know that a router is sitting inside
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| | forwarding' from the submenu. In another
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| your house and splitting the external
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| | family of linksys routers, you can find
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| address into many internal IP addresses.
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| | 'Forwarding' section under 'advanced' tab
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| They can only make a connection to your
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| | of main setup page. Rest of the process
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| router, and your router decides how to
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| | is the same as that for Belkin routers
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| route the connection and to which
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| | above.Netgear routers, you'll find 'Port
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| internal computer to route it to.IP
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| | Forwarding' under the 'Advanced' table in
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| addresses are further divided into
| |
| | the main page. The rest of the steps are
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| channels called ports. This permits one
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| | same as above.Step 4:Save the setting and
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| IP address to be shared by multiple
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| | restart the router. Your port forwarding
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| programs at the same time, each using a
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| | is complete.
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| different port. By standard every
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| |
|
