Skip to main content
This page explains the usage of network ports by PADS4. Be aware that the port numbers mentioned are the default settings. Some ports can be adjusted. The network communication between the components of the PADS4 system uses TCP/IP. PADS4 now uses one port number to communicate and by default it’s 7237. If you are using a firewall on the PADS4 Server this means that one or more of the above port numbers will have to be opened in order for PADS4 to communicate over the network. On the client side it’s not necessary to open any port numbers in the firewall.

​
PADS4 Server ports used with external connections

​
PADS4 Server local used ports

Be aware that these ports are used locally only!

​
PADS4 Viewer ports

​
PADS4 HTML5 Viewer ports

Port 80 and/or 443 (HTTP)

​
Note

PADS4 has built-in features to automatically detect a PADS4 Server in your network. However a PADS4 Server can only be automatically detected when the UDP port number 3702 is not blocked by a firewall on the server PC or somewhere else in the network.
With version 2021.3 a new mechanism is introduced which replicates both ways. Changes on the Sub/Backup Server are synchronized with the Main Server and changes from the Main are synchronized with the Sub/Backup Servers.