Need secure SIP trunks? use IPSec, proven and robust

December 8, 2008

When it comes to security with VoIP, few options are available – I mean proven and widely available. One of the most secure method is certainly VPN with IPSec. It offers many advantages:

– encrypt traffic from source to destination
– widely available
– proven and robust

What you can do as well, is to fool most ISPs that don’t like VoIP very much (we wonder why 😉 . In some countries they simply filter 5060 or anything related to VoIP (H323).

A simple way to setup IPsec is to use racoon (available on most Linux distributions).

Typical settings are :

Mode: transport
Security protocol: ESP(Encapsulating Security Protocol)
Encryption types: 3DES (Triple Data Encryption Algorithm)
Authentication algorithms: MD5 (Message-Digest Algorithm 5)
Authentication methods:PSK (pre-shared key)

Make sure that you share the same encryption key with the remote party – it can be anything.

You will find many tutorials on google explaining how to setup racoon – i recommend having a server with at least 2 ethernet interfaces so you can have the flexibility of encrypting a subset of your traffic, since maybe not all your traffic will need encryption.

Technorati Tags: , , , ,

MINUTETRADERS | Voice Exchange Marketplace – Buy/Sell VoIP/TDM AZ & Direct Termination Routes


Outsourcing your VoIP switch vs inhouse hosting

December 8, 2008

When choosing your VoIP switch , one question always comes up : “should I buy my own switch” or “should I rent it” – many of you will probably say : “go open source” ! I agree, but you need a fair amount of knowledge to get anything off the ground. And it’s not an easy task.

Let say we go open source – where will you host the server ? what happen if the server goes down or if something is preventing the system to process calls . Posting to a forum might help you to figure out what’s going on if you have no clue what the problem is. Also hosting the server yourself will mean stacking hosting and bandwidth cost as 2 separate items. Most hosting companies will make it as 1 bill.

It’s quiet scary to go this way specially after the hard work you will put to get your first few customers. Availability and quality of service will be key during the first few months where your customers at least 1 day of downtime so they can find an excuse to start hunting for a new provider. Don’t give them that chance.

The best option when you just begin, is to outsource – why ? simple: outsourcing is peace of mind while you get your first few customers. 1 bill at the end of the month, technical support as long as you need it, knowledge transfer at the same time, and last but not least : training ! voip training is very expensive since it’s a hot topic ! so for the price of 1 , that’s a deal hard to miss !

Find a company with proven track records, providing descent hardware and software to get you going. Check out VoIP Logic. They’ve been around for quiet a long time.

Technorati Tags: , , ,

MINUTETRADERS | Voice Exchange Marketplace – Buy/Sell VoIP/TDM AZ & Direct Termination Routes