>> I have hardware device in the local network witch communicate with 
>> external
>> server (looks like by public IP address)
>> I want to "reroute" this communication to my server.
>> For example device request connection with address 66.58.12.12,  but 
>> instead
>> of this will be connected to 192.168.1.2
>> In case of  using domain name I can setup DNS forwarder. Any idea how to
>> setup m0n0 in case of using IP ?
>>
>
> Use 1:1 NAT between that public IP and private IP, and put rules on
> the WAN allowing the traffic you need inbound (if any) to destination
> of the private IP.
>
> -Chris

Did  it 15 min ago. Created 1:1 NAT with external ip 66.58.12.12/32 and 
internal 192.168.1.2 on WAN interfaice
Save result - trying to navigate browser to http://66.58.12.12  (I use 
browser on computer with ip 192.168.1.3  and expect to see website on 
http://192.168.1.2)
No luck.
Read documentation. Just in case create new rule on the WAN interfaice allow 
any external connection reach 192.168.1.2 . Save result . No luck again.
Did I miss something?