Assign to servers a Public IP Range /29 routed through ISP WAN IP

RouterOS Forwarding Protocols
1

Hello,
i search all the internet but i don`t found the exact scenario like mine so if i miss the solution please apologize.

I`m new to Mikrotik, I booth one CCR and move from Linux gateway.
I have one fiber connection with one public IP and another public IP class /29 routed by ISP trough first IP
So this is my config :
eth1(wan) isp IP 8x.13x.1x.191/24
eth2 is for nat : 192.168.1.1/24
eth3 ( for my public IP class) IP : 8x.10x.13x.65/29
the problem is if I connect my server ( for testing ) to eth3 and configure the static IP like this
IP : 8x.10x.13x.66
ms: 255.255.255.248
gw: 8x.10x.13x.65
dns: 8.8.8.8
I can reach my server IP 8x.10x.13x.66 directly from the internet but if I go online from the server and check what is my IP I got back 8x.13x.1x.191/24. I need to go out to the internet with my server IP( 8x.10x.13x.66).Please help me with some advice.

2

That’s because you’re masquerading (ip > firewall > nat) in the WAN interface…

3



Definitely the right answer.

To fix it, go into your NAT rules and add this to your masquerade rule:
src-address=!8x.10x.13x.64/29

This will exempt the public IP range from being masqueraded.
(! means “not” and it’s that little checkbox next to the IP address field)