Important TCP/UDP ports
Depending on the application case, unsecured protocols must be deactivated or secured by a lower-level layer, for example by a physically secured network or VPN.
In the case of secured protocols, the security must be commissioned in accordance with the product documentation.
Standard services
The table below provides an overview of the incoming ports that are opened in the normal case in the delivered images
Service | Ports (incoming) |
|---|---|
IPC diagnostics | OPC UA: 4852 / tcp https: 443 / tcp |
Remote Desktop – RDP (Windows 7/10 only) | 3389 / tcp |
TwinCAT ADS | Discovery: 48899 / udp (also outgoing) Not secured: 48898 / tcp (also outgoing) Secure ADS: 8016 / tcp (also outgoing) |
Further services
The table below provides an overview of frequently used services that can additionally be opened
Service | Ports (incoming) |
|---|---|
SMB | 137-139 / tcp or 445 / tcp |
Cerhost (Windows CE) | 987 / tcp |
FTP | 21 / tcp |
TwinCAT services
The table below provides an overview of the ports typically used with TwinCAT products:
Service | Port (default setting) |
|---|---|
TF1810 TwinCAT PLC HMI Web | 80 / tcp (incoming) See also: Documentation on TF1810
|
TF2000 TwinCAT HMI | 1010 / tcp (local) 1020 / tcp (incoming) See also: Documentation on TF2000 |
TF6100 OPC UA | 4840 / tcp (UA Server, incoming), changeable 48050/tcp (UA Gateway, incoming), changeable See also: Documentation on TF6100 |
TF6100 OPC DA | Dynamic (depending on DCOM) between 1024 and 65535 (incoming) See also: Documentation on TF6120 |
TF6250 Modbus TCP | 502 / tcp (incoming), can be changed See also: Documentation on TF6250 |
TF6310 TCP-IP | can be changed / tcp (incoming, outgoing) See also: Documentation on TF6310 |
TF6311 TCP/UDP Realtime | can be changed / tcp (incoming, outgoing) The communication cannot be influenced by an operating system firewall. See also: Documentation on TF6311 |
TF6300 FTP | 20 / tcp (outgoing) 21 / tcp (outgoing) See also: Documentation on TF6300 |
TF6420 Database Server | changeable depending on the database / tcp (outgoing) See also: Documentation on TF6420 |
TF67xx IoT | changeable depending on the broker / tcp (outgoing) |
TwinCAT EAP | 34980 / udp (incoming), if EAP is used via UDP. The communication cannot be influenced by an operating system firewall. See also: Documentation on EAP |
TwinCAT ADS-over-MQTT | changeable depending on the broker / tcp (outgoing) See also: Documentation on ADS-over-MQTT |