TD-W8980 | VOIP Configuration - How to prevent network scanning and restrict VOIP traffic to my VOIP provider only?
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TD-W8980 | VOIP Configuration - How to prevent network scanning and restrict VOIP traffic to my VOIP provider only?
Model :
Hardware Version :
Firmware Version :
ISP :
I am getting "phantom" calls through my VOIP phone from numbers 100, 1001 etc. and have been advised by my VOIP provider the following:
Thank you for your email.
What you are experiencing, more than a 'SIP attack' is actually a network scan. Someone is directly scanning your network seeking to exploit any VoIP devices using port 5060. These 'calls' do not originate nor traverse the VoIP network, and as such, we cannot block nor control these connection attempts.
To prevent further scans, you need to secure your network restricting VoIP traffic to the network only. You should allow inbound connections to your phone only from the following network addresses.
I was then given 3 network addresses to allow.
Where and how would I go about doing this?
Supposedly it is in the firewall settings.
Hardware Version :
Firmware Version :
ISP :
I am getting "phantom" calls through my VOIP phone from numbers 100, 1001 etc. and have been advised by my VOIP provider the following:
Thank you for your email.
What you are experiencing, more than a 'SIP attack' is actually a network scan. Someone is directly scanning your network seeking to exploit any VoIP devices using port 5060. These 'calls' do not originate nor traverse the VoIP network, and as such, we cannot block nor control these connection attempts.
To prevent further scans, you need to secure your network restricting VoIP traffic to the network only. You should allow inbound connections to your phone only from the following network addresses.
I was then given 3 network addresses to allow.
Where and how would I go about doing this?
Supposedly it is in the firewall settings.
