On Supermicro hardware and maybe others, IPMI has a very dangerous default setting: if you're not connecting the dedicated IPMI port to a network (typically som

On Supermicro hardware and maybe others, IPMI has a very dangerous default setting: if you're not connecting the dedicated IPMI port to a network (typically some closed network dedicated to management), it will use the first ethernet NIC on the motherboard (sharing it with the host), possibly making it accessible through the internet (with default, insecure credentials adding insult to injury) or at least neighbouring machines.