TZ215 , 3 of them, all stopped listening on the management ports???
We have 3 old TZ215 (out of support) that seem to be operating fine but we cannot connect to them via HTTPS , they all worked fine up until recently .
All these devices do is hold up a site-to-site VPN. We are hoping to replace these devices but as we cannot log on to get a recent backup we are a little stumped.
We have an older Sonicwall (TZ190) which doesn't exhibit this problem, so the issue seems restricted to the TZ215.
Is anyone aware of something that could cause this?