SSH tunneling on steroids
Assuming the following:


YOUR_PC, has Redis client, SSH client, SSH access to SSH_SERVER
SSH_SERVER, has SSH server, redis access to REDIS_SERVER
REDIS_SERVER, has Redis server


Set up the tunnel from YOUR_PC, port 1234, to REDIS_SERVER:REDIS_PORT, via SSH_SERVER

ssh SSH_SERVER -L 1234:REDIS_SERVER:REDIS_PORT


On another terminal, on YOUR_PC, run the redis client (based on https://stackoverflow.com/a/40678950):

redis-cli -h localhost -p 1234