That is the Microsoft RDP Remote Desktop port. Interesting.

Perhaps a security breach scanning open ports on the network ?

Richard Schoen
Email: richard@xxxxxxxxxxxxxxxxx


message: 1
date: Tue, 23 Nov 2021 18:29:35 +0000
from: Greg Wilburn <gwilburn@xxxxxxxxxxxxxxxxxxxxxxx>
subject: Port 3389 (RDP)

Anyone know why a Power 9 system running v7r3 would use TCP port 3389 to contact a telnet device (Motorola/Zebra Radio Frequency device running 5250 telnet)?

This occurred yesterday and the security software on our firewall shut down access from that network to the IBM system.

[Logo]<> Greg Wilburn
Director of IT
301.895.3792 ext. 1231
301.895.3895 direct
1 Corporate Dr
Grantsville, MD 21536<>

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