Firewall problems when connecting via the phone

Asked By 0 points N/A Posted on -


My organization would like to have a VOIP phone system, for the network but our firewall does not support the connection from the phone. To adjust it, we manually created an exception on the firebox on our 5060 TCP using a wizard. While doing this, we encountered another problem. There is a firewall on our Entopic modem and we cannot disable it through our ISP.

So, we decided to create a pinhole through our modem for TCP 5060. This did not solve our problem.  

We are having a hard time creating a pinhole because before we could get through it, the pinhole will first go through a firebox firewall and every time the pinhole is used, it always asks for an IP address.

Do you think I should put the WAN IPM address of the firebox for the internal IP address? What should I put; Our public IP address for our domain or the IP address of the modem?

On the other hand, we are using SBS 2003 dual configuration and one of it is connected through the WAN while the other is connected through our LAN.   Are there any specific rules that need to be configured on the SBS box? 

Answered By 573050 points N/A #99996

Firewall problems when connecting via the phone


Setting up VOIP phone allows you to receive calls and then call out using digital phone connects to the modem.

It uses the Internet to call out and receive phone calls. This type of digital phone is mostly cheap and is digital compare to using the regular phone lines.

When installing VOIP, some modems has it's own firewall that blocks certain ports. Ports needed to use and open to allow the phone modem communicates to the Internet. But some needs to configure it manually, assigning a public IP Address and domain IP Address use of the modem.

You need to have phone modem attached to your mode provided by your ISP. Then connect the regular telephone line running to your telephone.

In this settings, it would be best to call your digital phone provider to let them do the settings for you. There may be some advanced troubleshooting need to work on your phone modem to let you use this service.

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