From the monthly archives: December 2008

Checkpoint Firewall-1 and The SIP Protocol

By On December 30, 2008 · 6 Comments

You have an asterisk based VoIP phone system sitting on an internal network and you are trying to establish connectivity to a SIP-based trunk provider.

You configure a static NAT entry 1-to-1 for the asterisk box and allow the SIP (udp 5060) through the firewall, but SIP registration fails constantly.

While troubleshooting the [...]

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VoIP Phone Systems for Small Businesses

By On December 29, 2008 · Leave a Comment

The more I research on the potential and possibilities of VoIP phone systems, the more companies I see trying to get a piece of the market.

Reminds me of a blog entry I read recently “Everything I Know About Business I Learned From Poker” and more specifically the quote: “If there are [...]

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Monitoring VoIP Trunks

By On December 22, 2008 · Leave a Comment

Using VoIP lines to save on long distance and/or international calls is smart but real savings come in when you are able to dump your landline and go all the way with VoIP.

Over the years the technology has matured to the point where its possible to provide reliable phone service over the Internet. [...]

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Anonymizing Web Traffic

By On December 19, 2008 · Leave a Comment

I recently wrote about Secure Internet Browsing and the need for it. Not too long thereafter I found an instance were you might want to make sure that your traffic is anonymous so I will take a closer look at “Onion Routing” and “Tor”.

Tor is a software project that helps you [...]

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