Which TCP ports are used by Snap7?

32/64 bit multi-platform Ethernet S7 PLC communication suite

Brought to you by: davenardella

#23 Which TCP ports are used by Snap7?

Milestone: 1.0

Status: open

Owner: nobody

Labels: TCP (1) port (1)

Updated: 2020-10-23

Created: 2019-07-15

Creator: andrea c

Private: No

Hello,
I need to set firewall rules to allow a virtual machine to connect with S7-300, 1200 and 1500 PLCs.
Which ports are used by Snap7?

Thanks in advance

Discussion

Davide Nardella - 2019-07-15

S7Protokol uses port 102

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- Benjamin Wischer - 2020-10-23
  
  Port 102 on the host / PLC side.
  Local ports are random
  
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