Vonage and MSN Port Usage
Abstract:Adding Voice over IP (VoIP) and Instant Messaging to a home is normally a simple process. The goal is often to increase communication while reducing telecommunications bills. Occasionally, there are problems with access, which required troubleshooting or more advanced features are desired. A user may need to understand the protocols, in order to better maintain security, and limit scope to attacks by viruses and worms.
Vonage Voice Adapters
Vonage is a low-cost VoIP phone provider service. Normally, not much needs to be done, except plug in a device. Here are the protocols which are required.
|5061||pre-2005 Vonage devices|
|RTP (Voice) traffic|
When a call is made, a random port between 10000 and 20000 is used for RTP (Voice) traffic. If any of these ports are blocked, you may experience one way or no audio.
Microsoft MSN and Windows Messenger
Microsoft provides various tools like MSN and Windows Messenger, but in order to get full functionality, occasionally users must forward ports through firewalls and expand exposure to worms and viruses. Use very carefully.
Windows Messenger - voice
2001 - 2120
|Computer to Phone|
MSN Messenger - file transfers
6891 - 6900
Allows up to 10 simultaneous transfers
MSN Messenger - voice
|Voice communications computer to computer.|
MSN Messenger text
|Instant text messages|
The ports may be helpful when you want to limit vulnerabilities within your environment to unfriendly viruses and worms.