Port forward on LTE interface

RouterOS Beginner Basics
1

hello
i have LTE dongle that once is connected the Mikrotik gets ip on lte1 192.168.8.100 (on dongle configured as DMZ)
how do i need to configure the firewall rule for port forwarding if the External IP is known on the dongle part.

thanks

2

If it’s enough to work from internet (i.e. you don’t need to connect to public address from LAN), then you can use this:

/ip firewall nat
add chain=dstnat dst-address=192.168.8.100 protocol=tcp dst-port=80 action=dst-nat to-addresses=<address of internal server>

If you’d need it to work also from LAN, then you need the same rule again, only with dst-address=. And then another srcnat rule as decribed here.

3

thanks a lot
do i need to specify port in the internal ip ?

4

Only if it differs from port in dst-port.

5

when I do so it works only when I get into 192.168.8.100 so its redirecting to 192.168.88.200 on port 80
but it doesnt work on the external IP of the LTE dongle.
how can I let mikrotik knows that its his external ip ?