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Securing your Wireless Network
Saturday, December 23, 2006
Securing your Wireless Network
When one thinks about home security, they ususally think of taking measures like installing alarms, deadbolts, and window locking devices. But if you have a wireless computer network like many American homes, your personal data (credit card numbers and banking information) could be open to hackers.
When you first purchase and turn on your wireless router, the router manufacturer makes it dead simple to connect your wireless devices. Out of the box, your wireless router is unsecured. Given that most wireless routers have a range of around 100 feet, if your neighbours have wireless devices, they can connect just as easy as you can. Even worse, hackers can drive past your house with a $29 wireless network detector and discover and connect to your unsecured network!
The good news is that you can perform 4 very basic steps to secure your wireless network and prevent hackers from gaining access to your data. You will need to consult the manual for your wireless router to perform the actual tasks described here.
1. Reset the Router's Password
There are only a handful of wireless router manufacturers and each one uses a common default password. Linksys uses '1234' and Netgear uses 'password'. Any hacker will try these passwords first to gain access to your network. So change the password to prevent hackers from accessing your data.
2. Turn off SSID Broadcasting
Your wireless network needs to have a unique name to distinguish it from other wireless networks. The Service Set IDentifier is always set to broadcast by default. Once again this is done to make it easy to connect to your wireless network for the first time. By broadcasting the SSID, you are making it easy for hackers to connect to your network. So consult your users manual and find out how to change your SSID to a unique name, and turn off the SSID Broadcast feature.
3. Enable WEP Encryption
Wireless Encryption Protocol (WEP) is a technology that will encrypt all traffic that goes over your wireless network. By default, your router will have WEP turned off, meaning that all of your personal data is transfered across you wireless network in plain text. Once again, this is an easy target for even the most inexperienced hacker. Enabling WEP is very easy, and should be enabled as soon as you possibly can.
4. Setup a MAC Address Filter
Finally the most advanced tip offered here is to setup MAC address filtering. Every computer wireless adapter has a unique id called a MAC Address. You can tell your router to only allow access to devices with a particular MAC address. This is probably the most effective step you can take to secure you wireless network.
THE LOWDOWN OF VOIP-
It seems like technology is headed for a massive telephone change over. The traditional Public Switched Telephone Network (PSTN) is looking to be replaced by VoIP. VoIP is short for Voice over IP. VoIP is the routing of conversations over an IP network or the Internet. VoIP uses a packet-switched network instead of the circuit-switched voice transmission lines used by traditional telephone networks. VoIP does not need an Internet connection to work. A company that has a LAN connection with all of its computers can utilize VoIP technology.
VoIP is a great technology, but has a variety of issues with implementation. VoIP may face problems with latency because IPs do not provide Quality of Service guarantees, nor do they provide their packets of information in sequential order. High-speed Internet connections are required for VoIP and firewalls often prove tricky for VoIP technology. To combat this, many people use Session Border Controllers (SBC).
VoIP technology has many advantages. There are more new features with VoIP because of the lack of an International Telecommunications Union. VoIP is still very much an open market for developers, so the technology is constantly being improved. VoIP also has a lower cost than traditional sources because of the monopolies that exist or traditional phone companies being controlled by the government. Some users even see VoIP phone calls as free because they do not have to pay extra for the service. The user only pays the Internet service provider, and therefore the usage of VoIP seems to be free. You can also take your VoIP phone wherever you go because all you need is a network connection to make it work. VoIP technology will also benefit network agents who work for call centers. Agents can help callers from anywhere in the country with an Internet connection. Finally, because VoIP is on the computer, there is increased functionality. Conference calls can be held, information can be sent, and things like address books can be updated and shared over VoIP.
While VoIP has many advantages, there are a few drawbacks to the service. One of the biggest drawbacks is reliability. Telephone lines have back up generators in case of power outages, so phones can keep working. Because VoIP is connected to the Internet, a power outage will end a VoIP call when the computer shuts down. To combat this, users must buy an expensive uninterruptible power supply or a generator that must then be installed on the premises. Internet connections are also subject to disconnection, depending on crowded networks, and the quality of the ISP. If the Internet connection drops, then the VoIP call will be dropped. VoIP is also a problem for emergency calls. Because of the nature of the Internet and VoIP systems, emergency workers cannot trace calls. In the event that someone with an emergency has a problem but is unable to give an address, the emergency worker will not be able to trace the call and find the person. VoIP carriers are already attempting to fix this problem by implementing a technical work-around. Finally, it will be very difficult to integrate VoIP on a massive scale, because while the standard Plain Old Telephone System (POTS) has a common standard, VoIP does not.
VoIP has many advantages as well as some large drawbacks. The main roadblock in the way of global VoIP adoption is reliability. When VoIP proves that it can be just as reliable as traditional telephone services have been over many years, then it will start to be adopted. VoIP technology is always improving, so the problems with VoIP today are likely to be solved sooner than many people expect. VoIP can truly revolutionize both the business world and home life.
WHAT IS RSS?
RSS is technology - a simple software program - that allows you to access web and blog content automatically. The acronym's most popular translation is "Really Simple Syndication. Once your browser or computer has an RSS reader on board, you can subscribe to any number of RSS "feeds." A feed is simply a way in which a reader may subscribe to website content - most commonly blogs or news sites. A news site, for example, may list their latest headlines or entire articles in their feed every time a new article is published. A blog would publish this feed as a series of recent posts.
Feeds are published by millions of publishers, from small individuals to large organizations like Newsweek. The value of a feed is that it brings the most current site content to you in a format that is easily scanned; further, you are spared the task of visiting each source site each day. This is typically done through the use of what is called an 'aggregator' or 'feed reader'.
Feed readers or RSS readers, are software programs that run on your computer (or PDA or phone); let you easily subscribe to feeds, and allow you to read through them efficiently. Some are relatively simple, showing the headline and summary. The fancier ones often work with (or in) your browser to make viewing the material look much like the source page. Once you have a reader on your computer, subscribing to a feed with is an easy click or drag from your browser. Sites that provide RSS feeds will usually have a button for that purpose.
There are several RSS feed formats as well as one with an entirely different methodology called Atom. Atom has become popular with some bloggers and blogging tools. Some aggregators can read both. The other acronyms you will see in "feedspeak" are XML, which stands for 'extensible markup language' and is the code standard for these simple text feeds. An 'OPML" file is a format for indexing hierarchical feed lists. If you dive into this web habit in a big way, your aggregator or reader may keep your subscription list in an OPML file.
An RSS feed is a great method for staying abreast of issues and topics that interest you. There are a number of feed "libraries," so to speak, from which you can learn what's out there in your areas of interest. Google has a built-in reader that makes the subscription process easy, as does Yahoo. Firefox has a downloadable extension for the purpose of aggregating RSS feeds, as well as a default ability to save RSS feeds as "live bookmarks" that update via the RSS feed. You can download a number of stand alone readers and aggregators; you can find them through a simple web search.
The whole RSS "movement" is a step towards utilizing the Internet more efficiently. The trick is to avoid overloading your email inbox with daily reports that you end up ignoring most of the time. For that purpose, there are sites like Feedster that will search millions of RSS feeds for articles that are relevant to your interests. Like any search tool, however, these services are hit and miss. They are still working off keywords and sometimes what they find is relevant, sometimes not. But if you want daily news broken into categories, it's great technology once you learn how to make it work for you.
