Hello
I have some IP camera in my network but from external IP to IP Camera i have some routers.

I have made a scheme and this is the true connection.
I think it will be with port forwarding.

Please help me

1st. router 750
/ip firewall nat add chain=dstnat dst-address=80.91.xxx.xxx protocol=tcp dst-port=8088 action=dstnat to-address=192.168.4.2 to-port=8088
2.st router Omnitik
/ip firewall nat add chain=dstnat dst-address=192.168.4.2 protocol=tcp dst-port=8088 action=dstant to-address=10.10.10.20 to-port=8088
3.st router SXT
/ip firewall nat add chain=dstnat dst-address=10.10.10.20 protocol=tcp dst-port=8088 action=dstnat to-address-192.168.103.99 to-port=80

*port 8088 - for example, you may choose other ...

Thanks man. it works

Thankyou very much

Three NAT statements are only needed if you are not routing all of the connections in your network. You should only need the NAT statement on the first device connected to the Internet.