VoIP on iPhone! – this one is cool.

admin — Mon, 23 Mar 2009 14:10:50 +0000

How many times have you waited at your desk for an important phone call? Or made a mad dash across the office when you heard your desktop phone ringing? Would you like to be able to receive calls to your business number when you’re away from the office, without having to lug around your laptop and softphone?

Well, now you can! If you have aniPhone or iPod Touch, the SipPhone on iPhone ($6.99) from VNetCorp allows you to make and receive office calls from any wireless hotspot, anywhere in the world, without using your regular cellular phone service. Your iPhone becomes an extra office phone that rings when your desk phone does, for free! Think of it as a cordless phone that works while you are in the office and also from any wireless hotspot.

To set up your iPhone as a wireless SIP phone this is what you need to do:

1. First, in whatever PBX or Voip service you use, create a new endpoint and write down the SIP ID (or just get a SIP ID)

2. You will also need the IP Address of your PBX or Sip Server

3. You will also need your account name and password (if your system requires one)

4. Then simply download the SipPhone iPhone application through the App Store (search for “SipPhone on iPhone”) and configure it.

1. Open SipPhone, Tap Accounts, then Tap Edit.

2. Tap ‘+’ and you should see the following:

3. Tap Domain and enter the LAN IP address that you wrote down earlier.

4. Tap Username and enter the SIP user/account name that you wrote down earlier (for example, 10007.)

5. Tap Password and enter anything as a password; some systems do not require a password, but SipPhone requires you to enter one.

6. Tap Save, Tap Done, then Tap the on/off toggle button to turn SipPhone on.

3. Now all you have to do is connect your iPhone to your WiFi network.

That’s it! You can now make and receive VoIP calls with your iPhone or iPod Touch using a wireless connection and not using up Cell minutes.

NOTE: To use SipPhone on an iPod Touch, you will also need a microphone or a headset with a microphone.

VoIP Security Threats – Video, Peter Cox

admin — Fri, 02 May 2008 05:50:10 +0000

Peter Cox(?) a security consultant specializing in VoIP security has a great Podcast primer on VoIP security examples. He states that there are really three categories of VoIP Security Threats:

IP level Threats – shared with the web and email and others, common knowledge to many people already
Protocol and application specific threats, based on the way the SIP protocol is designed and is implemented, these VoIP security vulnerabilities can result in misdirected calls, terminated calls, and general call disruption
Content related VoIP Security threats, the interfere with the media stream (the voice or video call)

The most serious is a application level flooding attack, the works by running a script that sends a bunch of calls to an extension in rapid succession and hangs up once answered. It would make a phone unusable, no effective calls in or out.

Imagine also that the attacker injected content into a call, ring the phone and then play a recorded message – Telephone or VoIP SPAM! the last thing we need

Another set of threats revolve around the need of SIP phones to register with an IP/PBX. these kind of VoIP attacks can come in and de-register phones and extensions and render people unable to receive calls

WireChatter.com » SIP Trunks

VoIP on iPhone! – this one is cool.

VoIP Security Threats – Video, Peter Cox