Howard, do you have any previous snapshots of your VMs? If so, does it work 
in any earlier states?

Vince

On Tuesday, May 12, 2020 at 3:54:22 PM UTC-5, Howard wrote:
>
> Madness continues. 
>
> Working in a CentOS environment; connecting to servers.  The connection 
> pair in question has been working for over a year without issues - 
> specifically querying various Nagios checks over ssh (works great, more 
> secure than NRPE).  Today, remote server (hosted on VMWare), Nagios 
> checks of VMWare host (not ssh) work fine, guest checks do not. 
>
> Troubleshooting: 
>
> - ssh from nagios server to all other monitored remote servers = working 
> - tried ssh login from command line of nagios server = timeout, no connect 
> - tried ssh login from other CentOS systems to remote server = works 
> - checked firewall on remote server = not active 
> - tried restarting sshd on remote server = no change 
> - nagios server got restarted 8 days ago and ssh worked until remote 
> server boot this morning 
> - /var/log/secure gives no activity during attempted ssh connection from 
> nagios server; /var/log/secure shows activity when ssh connected from 
> alternate system 
> - the alternate servers are probably further behind on openssl updates 
> than the nagios server 
> - oh yeah, tried ssh connect calling DNS names and IP addresses = no 
> difference 
> - ssh from nagios server to remote VMWare host = working 
>
> WhaddIdo??? 
>
> Howard 
>

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