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Archive for October, 2006

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What Is A Router
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Thursday, October 26th, 2006

By John Pachecus

In order to transfer information over the internet, a vast array of routers are used all over the world.
Routers are basically equipment used to connect different networks. Even a small home LAN can require the use of a router to connect, for example, three computers to access the internet through one of the computers. For this purpose, we can use a router, a switch, or both. Switches are mainly used for LANs and other local connections, like basic telephony, while routers are used for long distance connections over the internet. A home router can then communicate with the ISP

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What Are Proxy Ports And Protocols
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Thursday, October 26th, 2006

By John Pachecus

Whenever a computer receives or transmits information, be it a home computer or a server, it does so through an open port that at some point connects to a router, which will then send the information over the internet. Depending on the type of data being processed, certain specific ports are used.

In proxy servers, there are several ports that are most commonly used. These protocols communicate with external devices, such as routers, by means of a protocol. Protocols are used in order to allow equipment to communicate with each other and establish how information is sent over the internet.

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The most common protocol used by proxy ports is TCP

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5 Tips for Securing Your Open Source CMS
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Thursday, October 26th, 2006

By Tim Priebe

Recently, one of my clients that uses an open source content management system (CMS) was hacked several times. I’ve talked about CMS’s in the past. But I’ve not really talked about the fact that open source CMS’s are prone to hacking by hackers.

Well, they are. That’s the ugly truth. Even with a heavily customized open source CMS (like the one my previously mentioned client is using), the sites are very prone to hacking. Mainly because anyone can view the code and search for vulnerabilities in it.

Given my recent experience, I’ve been doing a bit of research on the subject of securing your site from hackers. Here are five tips on securing any CMS against hackers. Some of these I was already implementing on my client’s site, some I was not.

1. Rename your admin file

Many open source CMS’s use simply named admin files, often called admin.php. Rename it to something like mysitebackend.php.

The only trick to this is now you have to rename all references to it in other files in your CMS. What you need to do is use a program that can search multiple files for the old name, admin.php, and replace it with the new name, mysitebackend.php.

For Windows, a good free program that has that capability is SciTE. If you’re using a Mac, a good one is TextWrangler.

2. Don’t publicly link to your admin file

This one is pretty simple. Don’t put a link out there to your newly renamed admin file for all to see. The most secure (but arguably inconvenient) way is to not link to it anywhere at all, but simply bookmark it in your browser.

3. Delete unused features

This is one I was guilty of not doing on my client’s site. Don’t just disable modules/features that you aren’t using (and have no plans to use). Delete them altogether.

Often the security holes that a hacker finds are in something that you’re not using on your site anyway. If the files aren’t there for him to access, he won’t be able to use that particular method to hack his way in.

4. Use strong !
password
s

The longer the password and the less like normal English it is, the better. It’s somewhat likely that your system has a maximum number of characters for a password. On many systems I’ve encountered, the limit is 10 characters. I encourage you to have a password that is as long as allowable if your limit is something small like that. Your password should ideally be 10-20 characters in length. The best passwords have numbers and both lowercase and uppercase letters.

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5. Keep up-to-date on upgrades

The nice thing about many open source CMS’s is that they have a good community and security holes are found and patched. While you may not want to upgrade to a new release just as soon as it is released (give them a week or two to find any obvious security issues), keeping up-to-date on your software will help immensely.

Unfortunately, sometimes this is much more difficult than it sounds. This is especially the case if you have an extremely customized site where you’ve extensively modified the original CMS. In these cases, you need to find software that will compare files (your customized version and the latest upgraded version) and show you a line-by-line difference. You’ll then need to manually move the modifications over.

A good file to use if you want to compare differences in files on your Windows machine is ExamDiff. On a Mac, the aforementioned TextWrangler will take care of the job.

Unfortunately, even with all of these methods, you can still get hacked. Next time we’ll look at what measures to take before and after you’re hacked to prepare for that eventuality.

Tim is the owner and senior web designer at T&S Web Design. His company has developed and maintained website for dozens of small businesses and organizations. Tim also maintains a blog with free website advice for small business owners, f="http:
//www.getasiteonline.com">GetASiteOnline.com
.

Tim Priebe - EzineArticles Expert Author

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Computer Privacy Is Almost Nonexistent
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Thursday, October 26th, 2006

By Jennie Crawford

I was searching the internet the other day and found out some information that I found absolutely shocking. Did you know that with the use of some simple computer software, anyone can find out any website that you have ever visited? Every email that you have ever sent out? Computer privacy is almost Nonexistent.

No one is going to find out any damaging information on my computer. Except maybe my husband finding out how much shopping I really do online. But there are certainly situations where I can see that computer privacy would be of utmost importance. Maybe not in my household, but in some. There are people who have very sensitive jobs and they would probably prefer it that their teenagers not be able to trace their steps. There are parents who enjoy adult internet sites and also don


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Public instant messengers are not safe for business!
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Wednesday, October 25th, 2006

By Andrew Green

Efficient communication is one of the key components of the overall success of any company, be it a small family shop or a humongous multinational with thousands of employees. Proper communication models save time and resources, and make for faster business cycles, thus improving the performance indices of your enterprise and, therefore, increasing the revenue. Businesses of various scales often overlook specialized corporate LAN communication suites and opt for the widely available instant messaging software, such as MSN, ICQ, AOL and Yahoo IM’s. Although it may be the most apparent approach to building a large-scale corporate communication system, it contains quite a lot of flaws and potential dangers that are not to be underestimated. First and foremost, Internet IM’s are exposed to virus and hacker attacks that jeopardize the security of the internal company data sent and received through these messengers. Another negative aspect of regular public IM software is that these applications use servers to exchange messages between users, therefore your employees depend on their stability and may not be able to use the services when one or all servers are down due to technical issues, which is unacceptable for business applications. Other inconveniences of using standard IM software may include, but are not limited to, the necessity to open additional corporate firewall ports (which may affect the security of the corporate network), the absence of data encryption, unavailability of adequate technical support, the presence of ad banners and spam messages accompanying almost all free IM applications. Finally, the temptation to chat with people outside the corporate network is something that many employees cannot resist.

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If you can relate to that and are looking for efficient communication software that would meet you corporate requirements, we recommend taking a close look at Softros LAN Messenger. This software was specifically designed to accommodate the needs of corporate users seeking rock-stable, easy-to-use messaging and file-transfer applications with advanced security features. System administrators will be delighted to find out that they can automatically deploy Softros LAN Messenger on all network computers using domain group policies and remotely restrict Softros LAN Messenger features for regular users. Softros LAN messenger supports Microsoft/Citrix terminal services, so you can launch an individual instance of Softros LAN Messenger for each terminal user. And this is just the beginning! The scalability of this program allows it run equally efficiently both in a small office environment and in large enterprise networks. Softros LAN messenger encrypts all incoming and outgoing data and archives it at the same time, so you messages will never be lost, stolen or viewed by anybody else without your authorization. You can also divide your employees into groups to dispatch department-specific notifications by making just a few mouse clicks.

Having a very intuitive multilanguage interface, Softros LAN Messenger requires no advanced skills, so the users will not have to spend time dealing with “technical issues”

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