TCP 2455
Synopsis
- WAGO industrial controllers use TCP port 2455 for their “WAGO Service”/CODESYS V2.x programming and diagnostics interface.
- Real-world examples include WAGO 750-8xx/750-880 and PFC200 PLCs; engineering tools like WAGO-I/O-PRO (CODESYS V2.3) connect to port 2455 to download projects, perform diagnostics, and transfer firmware.
- Network scans and ICS-security reports have noted internet-exposed WAGO devices listening on 2455/TCP; on older or misconfigured systems this service has allowed unauthenticated or weakly authenticated operations, making it a target for exploitation.
- Best practice is to segment/limit access to 2455 to trusted engineering stations only.
Observed activity
Last 30 days
Detailed chart