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Understanding Voice Over Internet Protocol (VoIP)

With the introduction of VoIP, you can use the internet to make telephone calls instead of relying on a separate telephone line. However, the technology does present security risks.

What is voice over internet protocol (VoIP)?

Voice over internet protocol (VoIP), also known as IP telephony, allows you to use your internet connection to make telephone calls. Instead of relying on an analog line like traditional telephones, VoIP uses digital technology and requires a high-speed broadband connection such as DSL or cable. There are a variety of providers who offer VoIP, and they offer different services. The most common application of VoIP for personal or home use is internet-based phone services that rely on a telephone switch. With this application, you will still have a phone number, will still dial phone numbers, and will likely have an adapter that allows you to use a regular telephone. The person you are calling will not likely notice a difference from a traditional phone call. Some service providers also offer the ability to use your VoIP adapter any place you have a high-speed internet connection, allowing you to take it with you when you travel.

What are the security implications of VoIP?

Because VoIP relies on your internet connection, it may be vulnerable to any threats and problems that face your computer. The technology is still new, so there is some controversy about the potential for attack, but VoIP could make your telephone vulnerable to viruses and other malicious code. Attackers may be able to perform activities such as intercepting your communications, eavesdropping, conducting effective phishing attacks by manipulating your caller ID, and causing your service to crash. Activities that consume a large amount of network resources, like large file downloads, online gaming, and streaming multimedia, will also affect your VoIP service.

There are also inherent problems to routing your telephone over your broadband connection. Unlike traditional telephone lines, which operate despite an electrical outage, if you lose power, your VoIP may be unavailable. There are also concerns that home security systems or emergency numbers such as 911 may not work properly.

How can you protect yourself?

* Keep software up to date - If the vendor releases patches for the software operating your device, install them as soon as possible. These patches may be called firmware updates. Installing them will prevent attackers from being able to take advantage of known problems or vulnerabilities.

* Use and maintain anti-virus software - Anti-virus software recognizes and protects your computer against most known viruses. However, attackers are continually writing new viruses, so it is important to keep your anti-virus software current.

* Take advantage of security options - Some service providers may offer encryption as one of their services. If you are concerned about privacy and confidentiality, you may want to consider this and other available options.

* Install or enable a firewall - Firewalls may be able to prevent some types of infection by blocking malicious traffic before it can enter your computer. Some operating systems actually include a firewall, but you need to make sure it is enabled.

* Evaluate your security settings - Both your computer and your VoIP equipment/software offer a variety of features that you can tailor to meet your needs and requirements. However, enabling certain features may leave you more vulnerable to being attacked, so disable any unnecessary features. Examine your settings, particularly the security settings, and select options that meet your needs without putting you at increased risk.

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Nimbuzz Offers All-In-One VoIP, IM, Text, And Chat (TechWeb via Yahoo! News)

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Mobile VoIP Application Embeds Social Networking Connectivity (Cellular-News.com)

VoIP provider, Nimbuzz has an application which the company says offers an all-in-one solution for free mobile VoIP calling, conference calling, instant messaging, chat and group chat, and photo and file sending across multiple IM communities, including Skype, MSN, Google Talk, Yahoo!,

Nimbuzz Goes Beyond Skype - Launches Comprehensive Mobile VoIP & IM Solution, and Brings Voice to Social Networks (PR Newswire via Yahoo! Finance)

Nimbuzz today announces the UK launch of an application to provide mobile users and online communities with "free calls, chat and more." Nimbuzz offers an all-in-one solution for free mobile VoIP calling, conference calling, instant messaging, chat and group chat, and photo and file sending across multiple IM communities, including Skype, MSN, Google Talk, Yahoo!, AIM, Jabber and ICQ, plus 23 ...

Nimbuzz - the new big fish in the instant messenger/VoIP pond (Tech Digest via Yahoo! UK & Ireland News)

I can't keep track of how many of my colleagues and friends use which instant messenger programs and when, and I'm sick of having all those damn applications on my desktop, let alone open all at once.

Nimbuzz Does Mobile VOIP (Unstrung.com)

LONDON -- Nimbuzz (www.nimbuzz.com ) today announces the UK launch of an application to provide mobile users and online communities with "free calls, chat and more."

Challenger Mobile Sees Mobile VoIP Acceptance and Adoption Gaining Among Operators and Service Providers (Marketwire via Yahoo! Finance)

Challenger Mobile, the white-label Mobile VoIP Company with a unique approach to helping mobile operators and service providers enter new markets and reach new audience segments, today announced that the company has observed a consistent and marked change in attitudes toward Mobile VoIP service deployments throughout the mobile ecosystem. Both in the company's ongoing dialog with operators and ...