For minecraft related things, with networking, I've always found it easier to start basic and work my way up to where I want to be.
Basically, that means vanilla minecraft and try to connect to each other. Does that work? Yes?
No? I promise you it's a firewall issue. Before we get into ports, let me just remind you to allow minecraft through the firewall. This is separate from the port, allowing a program through is a completely different process. Windows key > search Windows Firewall with Advanced Security > inbound rule > new rule, fill it out, repeat for outbound. You can set your ports here as well.
I can't stress it enough, I hate, hate, hate, hate opening ports, thinking they're open, but nope, they're not open. Wasted days of my life just dealing with minecraft port issues.
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Firewall BS
If you're trying to connect externally imitating LAN, and you're trying to open ports, make sure you're opening ports on
1. Your computer
2. Your router
3. Your modem
For the modem, usually they just pass through to the router, but not all the time. Having 3+ firewalls just complicate the process to the point where I just want to throw security out of the window and let me have my internets.
If you want to know if a port is open for you... I use
http://www.pcwintech.com/simple-port-tester, though you can just google "port checker" and you'll get websites that will check for you. I don't know why though, but I just prefer a software on my computer to do it vs a browser. Idk, I think I used a website that told me a port was open for like 2 days and then I used SPT and it told me it wasn't really open. So frustrating.
I hate ports btw.
For LAN you use the local IP of your computer, for non LAN / Fake Lan you use the external IP of your computer. Local is 192.168.xxx.xxx. You can use CMD ipconfig to find your local IP, to find your external IP just google external IP or what's my ip and google will tell you. I found that to be the fastest way though there is probably better ways.
I notice you're using Hamachi. I never liked that program, so I can't really help you with hamachi problems. I used other alternatives though I can't remember what they were.
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Then try using the FTB launcher. Does that work? It should if the above worked. If it didn't but the normal minecraft launcher did, allow the FTB launcher through the firewall. Same steps I mentioned for allowing the vanilla launcher through.
Then try installing your modpacks with a brand new map. Does that work? Yes?
No? One of the mods in the pack are conflicting. Disable everything, enable a few at a time, like a group of 5, then try it. If it works, then apply another 5 until you get the error. Now you have knowledge, one of those 5 is the culprit, find out which one and then figure out if you can update that mod to make it work, or just don't bother and disable it and go on with your day.
If that works, but you try using the map you want to use, but you get that error, you now have a problem.
That means there is something in your map that is causing conflict. Something, it could be a single thing out of the millions of objects in your world causing conflict.
It has been awhile, but I believe minecraft also offers crash reports and logs. Maybe there is something there that offers information. It's kinda hard to read but if it's an object in the world then it is listed with a bunch of other items listed.
That's the gist of what I go through dealing with minecraft problems. I could go more in depth but I would follow that first. Don't try to figure out a problem with every mod you want all at once. That is never a good idea. Ever. Like really, you're just asking for your free time to be robbed from you. Don't do it.
