Q: Server VPN Setup

I've got an old Mac Mini that's running 10.7.5 Server and I'm trying to get everything configured correctly so I can use L2TP VPN and I attempted following this guide (https://macminicolo.net/lionservervpn) and I can connect when I'm on my internal network, but not from over the Internet and I'm sure (at least I hope so) that it's something simple that I have wrong in my configuration.

• My internal network at the house uses the IP range 192.168.1.100-192.168.1.200
• All necessary ports are forwarded in both my router and in the Mac's firewall
• L2TP VPN Passthrough is enabled in my router
• I have Sophos installed for my antivirus, but I don't believe that's interfering with anything
• I have the IP range for the VPN to use as 192.168.2.100-192.168.2.105 (because this should be different that my internal network, right?)
• If my dynamic DNS hostname from NO-IP is "xxxxxx.ddns.net" then that is what the hostname should be set to in the server app, right?
• When I attempt to connect to the VPN over the Internet using my PC, I get activity in the log and I'll have that at the bottom of the post

If there's any information that's needed that I'm forgetting to add, please let me know

Apr  6 23:19:18 servername racoon[1240]: Connecting.

Apr  6 23:19:18 servername racoon[1240]: IPSec Phase1 started (Initiated by peer).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: receive success. (Responder, Main-Mode message 1).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: transmit success. (Responder, Main-Mode message 2).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: receive success. (Responder, Main-Mode message 3).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: transmit success. (Responder, Main-Mode message 4).

Apr  6 23:19:18 servername racoon[1240]: IKEv1 Phase1 AUTH: success. (Responder, Main-Mode Message 5).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: receive success. (Responder, Main-Mode message 5).

Apr  6 23:19:18 servername racoon[1240]: IKEv1 Phase1 Responder: success. (Responder, Main-Mode).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: transmit success. (Responder, Main-Mode message 6).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: transmit success. (Information message).

Apr  6 23:19:18 servername racoon[1240]: IKEv1 Information-Notice: transmit success. (ISAKMP-SA).

Apr  6 23:19:18 servername racoon[1240]: IPSec Phase1 established (Initiated by peer).

Apr  6 23:19:18 servername racoon[1240]: IPSec Phase2 started (Initiated by peer).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: receive success. (Responder, Quick-Mode message 1).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: transmit success. (Responder, Quick-Mode message 2).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: receive success. (Responder, Quick-Mode message 3).

Apr  6 23:19:18 servername racoon[1240]: IKEv1 Phase2 Responder: success. (Responder, Quick-Mode).

Apr  6 23:19:18 servername racoon[1240]: IPSec Phase2 established (Initiated by peer).

Apr  6 23:19:18 servername racoon[1240]: IPSec Phase2 started (Initiated by peer).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: receive success. (Responder, Quick-Mode message 1).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: transmit success. (Responder, Quick-Mode message 2).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: receive success. (Responder, Quick-Mode message 3).

Apr  6 23:19:18 servername racoon[1240]: IKE Packet: receive success. (Information message).

Apr  6 23:19:18 servername racoon[1240]: IKEv1 Phase2 Responder: success. (Responder, Quick-Mode).

Apr  6 23:19:18 servername racoon[1240]: IPSec Phase2 established (Initiated by peer).

Apr  6 23:19:21 servername racoon[1240]: IPSec Phase2 started (Initiated by peer).