I want traffic outgoing to some IP in WAN to be redirrected to local PC in LAN. For example, traffic to IP 184.108.40.206 (WAN) would be redirrected to 192.168.0.3 (to my lan computer). Router model is D-Link DI-524, but I don't think it's possible to set this up within that router. Every idea is welcome, for example connecting device trough ad-hoc to my local machine and serving requests to desired IP dirrectly (but how?) or setting up some proxy server. Thanks!
You could get a managed switch in the middle and forward all requests to IP x to IP y. Other than that, I am at a loss. A proxy might work, but it might prevent internet access for the subnet. I'll keep thinking.