Firewall & Port Basics

Written by Ron Merts

Gaming in general is fun, but there's something about multiplayer gaming that's even more enjoyable. Perhaps it'srepparttar satisfaction of realizing thatrepparttar 107764 car you just passed inrepparttar 107765 last lap is being driven by a real person, like you, and not some computer program.

Butrepparttar 107766 Internet connection that makes gaming so much fun also serves as a doorway through which nefarious hackers can send malicious code, causing havoc with your computer. Broadband users are especially fertile targets for bad seeds. That's why a firewall is so important. A good firewall, such as Internet Connection Firewall (ICF) that comes with Windows XP, protects your computer from attacks.

A firewall works by blocking communication ports that are used to transfer data to and from your PC. However, games (and all applications that work over repparttar 107767 Internet) use those ports to communicate. This raises some questions that we frequently encounter on message boards and inrepparttar 107768 Usenet: how does a firewall affectrepparttar 107769 performance of online gaming? What do you have to do to enjoy online gaming with a firewall in place? I'll answer these questions in this article.

How Ports Work To getrepparttar 107770 most out of online gaming through a secure connection, you have to have some idea of how games communicate overrepparttar 107771 Internet and how a firewall works. Don't worry; this discussion won't get inaccessibly technical. I'll stick to layman's terms. To start with, let's look at how programs talk to each other overrepparttar 107772 Internet. All Internet-aware programs communicate with each other through ports. What, exactly, is a port?

Think of your Internet connection as a water conduit. But instead of thinking of it as one big pipe, picture it as a conglomeration of thousands of small pipes: 65,535 of them, to be exact. That isrepparttar 107773 number of Internet ports through which communications can take place.

Different services use different ports—the assignment of which service uses which port is more or less arbitrary. For example, World Wide Web communi- cations use port 80. Why port 80? Because a few years ago, a bunch of Internet-related people got together and decided that that's how it would be. Similarly, SMTP e-mail traffic uses port 25. Those same people decided that that's how that would go, and so on. These and other services use protocols to transmit and receive their data through these ports. Two protocols that they use are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP).

The 65,535 ports are divided into three groups: Well Known Ports (ports 0 through 1023), Registered Ports (ports 1024 through 49151), and Dynamic or Private Ports (allrepparttar 107774 rest). A list of port numbers and what services commonly use them is kept up byrepparttar 107775 Internet Assigned Numbers Authority.

Like other services,repparttar 107776 Internet components of games use ports and protocols to communicate overrepparttar 107777 Internet. When you play Halo online with a bunch of other people, it has to transmit your keyboard and mouse-click data torepparttar 107778 server so it can tell when you move around or fire your weapon. In turn it has to transmit world data back to your computer so you can see where other people move so you can aim at them and chase them around. Halo and other multiplayer games likerepparttar 107779 Quake family, Half-Life and mods such as Team Fortress Classic andrepparttar 107780 popular Counter-Strike, Medal of Honor: Allied Assault, Battlefield 1942 send their data down ports and listen for data fromrepparttar 107781 same or other ports. Game matchmaker services like GameSpy Arcade also use ports to communicate.

Firewalls block ports. They are, by their very nature, communications- blocking applications. By closing off ports, they prevent malicious entities from gaining access to your computer through your Internet connection. But doesn't that mean they also block traffic for benign applications that you want to have access torepparttar 107782 Internet, such as your Web browser, your e-mail application, and online games?

Web Designing Tips

Written by Pawan Bangar

Web Design Tips:

Easy That's how you'd like life to be, right? Especially when you're creating a website on your own. But that doesn't mean you wantrepparttar site to look severe and just functional. you want it to be pretty , smart and also respond and move when you interact with it, while saying all that you want to say to its visitors . There are little tips and Features incorporated into software just for people like you .

Love what Flash can do but don't know how to use it ? Macromedia thought of you and built a feature into Dream weaver that lets you create cool animated Flash buttons just by entering parameters. Want to have button respond to a mouse-over but have no idea or patience to create one with graphics software? You can make a quick and easy mouse-over button right from within FrontPage. What do you do if you need to optimize 150 images within an hour? No need to panic, image ready can help you out with a little droplet. Check outrepparttar 107763 different tips that make life easier or better for you as a Web designer.

•Animated Flash Button & Macromedia Dream weaver:

Dream weaver lets you create some custom vector graphics from withinrepparttar 107764 software. You can make Flash and embed them into your Web pages. There are different kinds of style that you can choose for these fromrepparttar 107765 available set-play back type of buttons .Arrow shaped button, shopping cart button And so on, or make some of your own.

Making a smart interactive button is simple in Dream weaver, select insert-interactive Image-Flash Button. Formrepparttar 107766 window that opens select different button style by looking atrepparttar 107767 preview image below. Customizerepparttar 107768 buttonrepparttar 107769 way you want it by addingrepparttar 107770 name ofrepparttar 107771 button,repparttar 107772 Font color and font size , then specifyrepparttar 107773 URL thatrepparttar 107774 button has to link to . The button is saved with SWF extension you can previewrepparttar 107775 button in your browser to see if it looksrepparttar 107776 way you want.

•Easy Mouse-Over Buttons :

Mouse-over and Front Page? Oh Yes. The software has quit a few convenient features up its sleeve, one of which is "Hover buttons." Granted, these buttons don't have snazzy graphics they look like typical button blocks, but they react to mouse-over and you can archive it very simply. Here's how.

Select Insert -Web component. inrepparttar 107777 window that opens , select Dynamic Effect inrepparttar 107778 component type and selectrepparttar 107779 Hover Button effect onrepparttar 107780 right . Type inrepparttar 107781 text that should appear onrepparttar 107782 button, choose a font forrepparttar 107783 text, specifyrepparttar 107784 URL to link to on clicking, and selectrepparttar 107785 size and color ofrepparttar 107786 button. Inrepparttar 107787 drop-down menu for Effect, Glow isrepparttar 107788 default selection. Try it - you can selectrepparttar 107789 color ofrepparttar 107790 glow-checkrepparttar 107791 button in preview mode-the button light up when you move your mouse over it. There are several other effects available that are worth checking out, especiallyrepparttar 107792 bevels quite neat!

•Cool Effects With DHTML :

DHTML or Dynamic HTML offers some cool effects that could make your Web pages stand out click? Or your page to load with a transition Effect? DHTML will do this for you along with other little tricks. After you've built your Web page, fromrepparttar 107793 menu bar, select Format-Dynamic HTML Effect. A tool bar appears inrepparttar 107794 work area. Choose an event fromrepparttar 107795 first drop down list. This could be on ‘click' double-click.' Mouse over or page load. Depending onrepparttar 107796 event selected here ,repparttar 107797 next Drop-Down list offersrepparttar 107798 possible effect that can be achieved , This could be a change inrepparttar 107799 color and style ofrepparttar 107800 font if it is text, a border added around it , or in case of an image , you can replacerepparttar 107801 image with another one by a swap .

Most ofrepparttar 107802 effect toggle Meaning if there was a font change on click, another click will changerepparttar 107803 font back to what it was before. However, some effects are one-time likerepparttar 107804 disappearing act of an image or button .you select ‘fly out' fromrepparttar 107805 effects list for this . On ‘page load' you could haverepparttar 107806 selected text drop in word by word, or hop in, spiral in, zoom out, and so on. This is especially useful for advertisements or parts ofrepparttar 107807 page that you want to drawrepparttar 107808 user's attention to.

•Animation In Reverse :

You've made an animation using image Ready-may be a tween of position, opacity or effects or a manually placed and manipulated animation backwards? No need to re-tween or manually placerepparttar 107809 frames backwards; simply click onrepparttar 107810 little arrow inrepparttar 107811 animated palette and select Reverse Frames. You can also create a rubber band effect by copyingrepparttar 107812 forward sequence (small arrow > copy Frames), pasting it atrepparttar 107813 end of sequence (small arrow > Paste Frames > ‘Paste after selection ‘) and then, by selectingrepparttar 107814 newly pasted sequence and applying Reverse Frames on this.

Cont'd on page 2 ==> © 2005
Terms of Use