How to access Joyfax Server behind a router/firewall?
For users on an office network with a router installed, Joyfax Server is not accessible from the Internet because of many modern routers' built-in firewall.

Enabling outside Joyfax Client access to an internal Joyfax Server on an Office network requires that you set up NAT - "network address translation," or port forwarding. Please follow this instruction:

  • Step 1. Determine your server's internal IP address.
    All the computers on your internal network have an IP address which looks something like 192.168.0.XXX. Get on the computer with the server running and open a command window. Then type ipconfig to determine the machine's internal address, like so:

    Windows IP Configuration

    Ethernet adapter Local Area Connection:
    Connection-specific DNS Suffix . :
    IP Address   . . . . . . . . . . . . :
    Subnet Mask  . . . . . . . . . . . :
    Default Gateway . . . . . . . . . :

    In this case, as you can see, the server's internal IP address is
  • Step 2. Configure your router. 
    Most routers have an web-based administrative interface that's located at (This address does depend on your model. Consult your router user guide for more info.) 

    Once you've gone to the router administration, entered the password (if one is set up), there should be an area called "Port forwarding". There, you'll set the port number that requests from the Internet will come in, and the internal computer that should fulfill those requests. Here's a screenshot of the Netgear router set up to port forward 8750 to the Joyfax Server, which is at (see above). Click on the image to see a larger version.

  • Step 3. Determine your server's internet IP address.
    In the "Router Status" area, you may see your Internet IP address in the Internet Port section.

    So, in the Joyfax Client login dialog box, type as server address, then you may access the Joyfax Server all over the world.
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