I tried entering my personal server's hostname and port number but it timed out trying to connect. Then I remembered that I configured my server's firewall to o

I tried entering my personal server's hostname and port number but it timed out trying to connect. Then I remembered that I configured my server's firewall to only allows SSH connections from my home ISP or work IP address. I too would prefer to use a standalone tool that I could use for testing my SSH configuration without having to temporarily disable those firewall rules.