Yes, but you do not need it if the Mac's are on the same network.
It's Safe but Public and Hamachi dont go together so much... Port Forwarding is better but riskier.
Depends on what IP is.
You need to have hamachi.
You need Hamachi first, then you have to join there Network they should have created through Hamachi. Once you have done that you need to get there personal Hamachi IP and type it in on Minecraft, it should not require a port.
No. You have to use Bukkit. And there is no such thing as a hamachi server, it just means you connect to their network using Hamachi
Its impossible I've tried
Type in the IP address or Hamachi address of your friend's correctly or play the premium Minecraft. Myncraft1: Your friends has to be on (Hamachi) to connect to his server
If your Hamachi network has no internet access, first check that your Hamachi client is up to date and that the network settings are correctly configured. Ensure that your firewall or antivirus software is not blocking Hamachi's connections. Additionally, verify that your computer's network adapter settings allow Hamachi to route traffic. If these steps do not resolve the issue, consider restarting the Hamachi service or your computer.
Use Hamachi. Search Hamachi in Google and it will come up. Download it and install it. Hamachi basically allows one computer to host an address IP and the other computer can join it. Note: You need to have Hamachi on both PCs. If your stuck, look up Hamachi tutorial on Google.
The noun 'hamachi' is a common noun as a word for a type of fish used for sushi. The noun 'Hamachi' is a proper noun as the name of a computer software.
That depends on whether it's a bukkit or hamachi. If its hamachi just op yourself on the window where it says loading spawn area because basically op is admin on hamachi so if you are op you basically own a hamachi server.
The hamachi part yes as long as the hamachi is active for that server the server itself cant run though as the server is local to the computer.