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The policy of this cusotmer site which doesn't allow SSH (port 22). When I run CECT, the SSH item shows "Required". Does anyone ever meet this situation? And how do you solve this issue?  I have an idea that to modify SSH service port from 22 to others. But I don't know what will happen of devices? I also consider the problem is not "which Port it is", the SSH service is the key important.  Do you have any recommend to me? Thanks. 
Does it works that ESRS monitors a DLM or Avamar device without SSH(port 22)?