Post Tagged with: "iptables"

SIP Happens! Deploying a Publicly-Accessible Asterisk PBX – replaced

SIP Happens! Deploying a Publicly-Accessible Asterisk PBX – replaced

Monday, January 28, 2019

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We’ve previously documented the benefits of SIP URI calling. Because the calls are free from and to anywhere in the world, the use case is compelling. The drawbacks, particularly with Asterisk® servers, have primarily centered around the security implications of exposing SIP on a publicly-accessible server. Today we want to take a fresh look at a possible SIP implementation for Asterisk based upon the pioneering work of Dr. Lin Song back in the PBX in a Flash heyday. We’ve embellished… Read More ›

One Minute Wonder: Introducing VitalPBX for VirtualBox

One Minute Wonder: Introducing VitalPBX for VirtualBox

Monday, April 9, 2018

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Last week we took VitalPBX to the Cloud with our rock-solid firewall. And this week we’ll show you how to get VitalPBX up and running on any desktop computer in less than a minute using VirtualBox®. If you’ve followed Nerd Vittles over the years, you already know that VirtualBox from Oracle® is one of our favorite platforms. Almost any desktop computer can serve as a VirtualBox hosting platform. And once VirtualBox is installed, adding VitalPBX is a snap. Download the… Read More ›

VitalPBX in the Cloud: Providers, Backups, & Airtight Security

VitalPBX in the Cloud: Providers, Backups, & Airtight Security

Monday, April 2, 2018

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Last month we introduced VitalPBX, a terrific new (free) VoIP platform that’s about as intuitive as software can get. We followed up with a dozen Incredible PBX applications that really showed off the flexibility of this new Asterisk® platform. And today we’re pleased to introduce two new cloud solutions that offer our whitelist firewall design for security plus automatic backups. Both Digital Ocean and Vultr offer terrific performance coupled with a $5/month price point that is easy on your wallet.… Read More ›

RTPbleed Security Alert: Asterisk Calls Can Be Intercepted

RTPbleed Security Alert: Asterisk Calls Can Be Intercepted

Friday, September 8, 2017

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If you’ve installed Asterisk® during the past 4½ years, your server has a MAJOR security problem. If you didn’t already know, with Asterisk, your VoIP conversations actually are carried over a random UDP port using the Real Time Protocol (RTP), not the SIP port (UDP 5060) which handles the setup and teardown of your VoIP connections. It turns out that, since March 2013, all of that RTP traffic and thus your conversations could be intercepted and redirected by anyone on… Read More ›

Twofer Tuesday: 2 Cloud Servers for the Price of a RasPi

Twofer Tuesday: 2 Cloud Servers for the Price of a RasPi

Tuesday, February 28, 2017

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It’s been more than a year since we last chatted about Cloud At Cost. Because they’re in the midst of yet another 50% off Fire Sale and to close out February with a bang, it seemed like a good time to take a fresh look at a terrific way to get started with Linux. For today’s $35 cloud project, we’re going to build a free WordPress server and a free commercial PBX compliments of 3CX. For what it’s worth, we’ve… Read More ›

Raspberry Pi One-Minute Wonder: A Turnkey and Truly Incredible PBX for XiVO

Raspberry Pi One-Minute Wonder: A Turnkey and Truly Incredible PBX for XiVO

Monday, August 29, 2016

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Hard to believe it’s been 4½ years since the introduction of the original Raspberry Pi®. We love half-birthdays, and we’ve got a blockbuster gift for you today as we celebrate the fact that almost 10 million RasPi’s have been shipped. Yes, our love affair with the Raspberry Pi lives on. The sensational Raspberry Pi 3 sports a 1.2GHz 64-bit quad-core ARM Cortex-A53 CPU with ten times the performance of the original Raspberry Pi. Of particular interest to the VoIP community… Read More ›

It’s Back: $10.50 Buys an Incredible PBX in the Cloud For Life… If You Hurry

It’s Back: $10.50 Buys an Incredible PBX in the Cloud For Life… If You Hurry

Monday, March 14, 2016

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Embed from Getty Images In January, we began our new series on Cloud Computing by documenting how to build an awesome LAMP server in the Cloud using Linux. Today we’re again going to show you how to use the same Cloud platform and take advantage of the $10.50 coupon code TAKE70 to build an Incredible PBX in the Cloud FOR LIFE. When you’re finished, you’ll have a state-of-the-art Incredible PBX 13 server with hundreds of PBX features including free calling… Read More ›

The Ultimate Linux Sandbox in the Cloud for Less Than a $35 Raspberry Pi 2

The Ultimate Linux Sandbox in the Cloud for Less Than a $35 Raspberry Pi 2

Monday, January 25, 2016

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Every few years we like to drop back and take a fresh look at the best way to get started with Linux. For those coming from the Windows World, it can be a painful process. Learning with a Cloud-based server can be especially dangerous because of the security risks. And then there’s the cost factor. Not everyone has several hundred dollars to buy hardware and, frankly, learning about Linux on a $35 Raspberry Pi can drive most newbies to drink.… Read More ›

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