Anyone else experiencing stability issues with their masternodes at the moment? Mine have been bulletproof for months but the last couple of weeks I'm constantly restarting them etc. I haven't made any changes to the underlying system. Has something on the network changed?
Walter
Quite possibly. I had a reliable masternode (16+ weeks of uptime) go down twice in one day, which is very unusual. I reviewed my firewall settings and realized I was not filtering some incoming traffic properly. There could be malicious users out there trying to bang on masternode IPs, looking for exploits. So I would recommend closing all the ports you don't need.
That's a good point...
It's quite likely that someone is scanning masternode IP's, then searching each server for open ports.
If someone found open ports, they might be trying to brute force crack your password, which could look like a DDOS attack, slowing your server, possibly crashing the masternode...