Port forwarding






Communication between the DICOM viewer and a DICOM server (or between two DICOM viewers) takes place via one or more ports. You are most likely connected to the network via a router. This router has assigned an IP address to your PC and probably will block all communication through unknown ports. These ports must be opened or forwarded to your PC.

First find out which IP address has been assigned to your PC. In Windows 7:
1. Open a command window. Click the Windows button and type 'cmd' in the search bar.
2. Press enter, a command window will open. Type 'ipconfig' and press enter.
3. In the command window, scroll up to view your IP4v address.

4. Go to the settings of your router and look for 'Port forwarding' settings. Enter the specific port number through which communication will take place and forward it to the IP address of your PC.

Common DICOM ports are 104 and 11112, and 2762 for TLS secure communication. However, DICOM PACS/servers may use other ports, consult your administrator. Also keep in mind that when you retrieve DICOM files from a server, the server will make a new incoming connection to your PC and this may takes place via a different port. This port should be open and/or be forwarded to your PC.

When you activate the receive mode of the DICOM viewer, the specified port on which the viewer will listen should be open and/or forwarded to your PC.