Anyone come across a situation where masters in a system look like they are offline - they are ping-able but no comms on 80/23/1319.
When you try and login to the offending masters on telnet, you just get a blank screen and a cursor but no login prompt.
There are 22 masters in this system and they have been running fine for about 5 years then suddenly this started to happen 3 months ago. The masters are all NI700's plus 1 x NI4100. All up to date on their last firmware available (v3 not 4) and they are all password secured.
We are not in control of the network, we are on our own VLAN and our access if effectively local, via Teamviewer.
Any thoughts are welcome.....