Set up Mikrotik behind existing nat

RouterOS General
1

Hello all,

First of all, I am sorry If I used the wrong section.
I would need some help with setting Hap Lite behind existing nat network. So I have tried to set up my Hap behind an ISP provided router, well no luck..

What I want to achieve:
Since it is a shared home I would like to create my own network, in my room. (For phone, printer odroid and such…)

What I did:
I have tried to set up the Hap on automatic, and hap does not receive the IP from the first router. no luck
I tried to set it up as a static IP. no luck (I have set up the IP 192.168.1.100 255.255.255.0 192.168.1.254)
Then I have changed the internal network on the Hap to 172.16.88.1 (default IP) and 172.16.88.2- 172.16.88.254 (DCHP range). still no luck..

btw: I have been using this Hap for more than 4 years on the static IP from other ISP directly connected to the FTTH switch.

Could someone point me in the right direction?

Best,
hiper

2

you have two options:

  1. Make sure that the modem of the ISP is in bridge mode. That means, it is now a purely dumb media converter. The REAL IP from the ISP will come out of the modem, directly to your hAP. So you can do your NAT and it will work.

    \
  2. If the modem of the ISP cannot be set into bridge mode, then you can do the following:
    2a: Disable DHCP on the ISP router. Give the ISP router a fixed IP for example: 192.168.1.254.
    2b: Give your hAP an address 192.168.1.253, setup DHCP on it (for example: 192.168.1.10 → 192.168.1.250), firewall etc… Gateway should be 192.168.1.254 (ISP router). DNS can be the ISP’s, or Google’s 8.8.8.8 and 8.8.4.4.

That way, you will stay in the same subnet, one time NAT, and the Mikrotik will be available from the outside.