I am running a couple of servers on my Raspberry Pi 3, and have access to it via both VNC and SFTP. The Pi is sometimes shutdown very frequently (while testing code), if this is relevant.
The problem is that the Pi keeps generating new signatures for itself. Some tools (e.g. VNC Viewer, FileZilla) warn about the change and allow to trust it, while other tools don't seem to even give the option.
I installed Raspbian from NOOBS, have it running the new buster, and didn't configure much else in regards to SSH other than enabling it via the Pi's settings following a tutorial.
Is there a reason the signature keeps changing?
Can I stop the signature from changing?
And finally, is there a better way to handle remote connections in the first place?