NX Controllers Creating Duplicate SSH Host Keys
Escalation Article
Written by Richard Gregory
Updated at June 30th, 2026
Table of Contents
Brand:
- AMX
Affected Products:
- Netlinx Controllers
- NX-1200
- NX-2200
- NX-3200
- NX-4200
- Enova DVX-x2xx
- Enova DGX 8/16/32/64
- Massio Control Pads MCP-10x
- Enova DGX 800/1600/3200/6400
- DVXC DVX-2265/3266
Summary:
Sites with multiple NX controllers can end up sharing the same SSH host key, violating security best practices.
Troubleshooting:
The telnet command "sshkeygen" to generate new ssh keys as needed was added in NX firmware version v1.8.217