What ip/port should I locally open to use Redsmin proxy

If you want to manage a locally available Redis instance (a.k.a currently only accessible from your local network) you'll have to install Redsmin proxy first.

Then, if you are behind a firewall that disallow output connections the next step will be to open the destination port 993 to the IP address:

You can test your connectivity to Redsmin in your side with the command below:
openssl s_client -connect ssl.redsmin.com:993
...that should produce something like the following output (extract):
New, TLSv1/SSLv3, Cipher is AES256-GCM-SHA384
Server public key is 2048 bit
Secure Renegotiation IS supported
Timeout   : 300 (sec)
Verify return code: 19 (self signed certificate in certificate chain) ---
Use Ctrl+C to exit this program, execute:
redsmin start
... and you are good to go!

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