Community discussions

MikroTik App
 
levimester
just joined
Topic Author
Posts: 2
Joined: Sat Apr 07, 2018 1:41 pm

Port forwarding behind CGNAT

Sat Apr 07, 2018 1:57 pm

Dear All,

I need some help with configuring port forwarding on a Mikrotik RB951G-2Hnd.
It seems that my Mikrotik router is behind a Carrier Grade NAT (CGN). The IP Address for Internet in the Mikrotik configuration is from 100.64.0.0/10, but when I check my public IP I can see something totally different, and this public IP address is changing dynamically.

After some searching on google I found this article: https://wiki.mikrotik.com/wiki/Manual:I ... Source_NAT
Tha last part is about Carrier-Grade NAT, but I could not really figure out how to apply this to my router.

I also enabled DDNS in the Mikrotik configuration, but it is not working properly and I get this error message:
DDNS server received request from IP x.x.x.x but your local IP was 100.64.x.x; DDNS service might not work.

Can someone please help me with how I can configure a NAT rule or something, so that I can reach my Mikrotik router from outside of my LAN?