Redirecting an IP address to localhost on a Mac

When trying to troubleshoot network connectivity issues, it's not uncommon to encounter situations where pinging from one device to another fails due to timeouts. In such cases, inspecting network traffic using tools like `tcpdump` can be incredibly helpful in identifying the root cause of the problem.

Recently, I found myself facing a similar issue on my home network. Two machines connected to the same WiFi router were unable to communicate with each other successfully, despite visible incoming requests being received by the target machine (B) according to `tcpdump`. After scouring numerous online forums and questions, I was left without a solution.

In this situation, it appears that computer B receives the ping but fails to respond. The issue lies in configuring NAT (Network Address Translation) correctly on my Mac OS device. To achieve this using PF, I needed guidance on how to set up the necessary configuration.

Fortunately, I've already successfully configured port forwarding within Mac OS by creating a rule to redirect incoming requests from `localhost:444` to `localhost:443`. This is accomplished by adding an entry in the system preferences under 'Sharing' or 'Advanced Sharing'. With this setup, when accessing `localhost:444`, the request is redirected to `localhost:443`.

Now, I'm seeking assistance in configuring my Mac OS device to redirect incoming requests from `localhost:443` to `192.168.100.50:443`. This would allow me to access a host on my local network (192.168.100.50) as if it were running on the same machine.

If you have experience with PF or NAT configurations, I'd greatly appreciate any guidance on how to set up this redirect rule using PF anchors and rules. Your help in resolving this issue will be invaluable.

Redirect ip to localhost mac