Can I manage Redis instances only accessible from my local network?
Yes! When adding a new Redis instance to Redsmin, select Localhost Redis (or not accessible from internet).
And then follow the on-screen instruction to install redsmin-proxy. Redsmin-proxy is available as a Docker image or requires NodeJS v6+ as well as npm and is compatible with Windows, MacOS and all *nix distributions supported by NodeJS itself.
Configuration (unix-socket, auth, multiple redis servers)
Redsmin proxy full configuration documentation is available in the README.
I am behind a firewall that blocks output port/ip, what should I allow?
Check out What ip/port should I locally open to use Redsmin proxy.
I don't want to use Redsmin proxy, how do I only allow my IP address?
Check out How to allow only one IP to access Redis with iptables