port forwarding in windows

Question

I have two network board in my pc:

The main one has the local ip -> 192.168.1.111 The secondary ones has the local ip -> 192.168.0.200

The main one has internet connection and the second one is connected to a device with the IP 192.168.0.33, it has a http server in port 80.

I have an apache-server in the main connection (port 4422), and I can access from anywhere, what I want now is when I detect a connection from 4422 i want to redirect this connection to 192.168.2.33:80

How can I do this with windows?

Moldboard

More information can be found here. technet.microsoft.com/en-us/library/cc731068(v=ws.10).aspx – Hydrometeor

Answer 1

I've solved it, it can be done executing:

netsh interface portproxy add v4tov4 listenport=4422 listenaddress=192.168.1.111 connectport=80 connectaddress=192.168.0.33

To remove forwarding:

netsh interface portproxy delete v4tov4 listenport=4422 listenaddress=192.168.1.111

Official docs

Moldboard

Just be sure to have IPv6 installed. Accordingly to this MS KB article, netsh need some IPv6 libraries to configure the port proxy feature. – Kall

Yes, netsh portproxy need ipv6 libraries even only use v4tov4 – Hornsby

Also, you can do cleanup using netsh interface portproxy reset or netsh interface portproxy delete – Nike

Thanks! Does this persist after session logout or rebooting, or do I need to automate this? – Linter

I tried using this technique, and while it worked, it was extremely slow. Instead. I found a utility called PassPort (sourceforge.net/projects/pjs-passport) that does the same type of port forwarding bound to a specific NIC, but does not have the performance issues of netsh. It installs and runs well on Win2008SvrR2. – Blakeney

The command above didn't work for me on Windows7 nor on Windows Server 2003. I had to specify protocol=tcp parameter too. Full command: netsh interface portproxy add v4tov4 listenport=4422 listenaddress=192.168.1.111 connectport=80 connectaddress=192.168.0.33 protocol=tcp – Charbonnier

NOTE that this only works on TCP, so no luck if you wanted to forward UDP traffic. – Hynda

Don't forget to allow the connection in firewall: netsh advfirewall firewall add rule name="any_name" protocol=TCP dir=in localip=listen_address localport=listen_port action=allow – Competent

I tried forwarding to connectaddress=127.0.0.1 which didn't seem to be possible to get to work at all. Forwarding to the Ethernet's IP solved it for me! Found some hints about that here. Also make sure you have the Forwarding flag enabled on the listening interface. See this article for more info. – Sutra

This is actually a proxy, not port forwarding - i.e. the originator is completely hidden from the receiver. – Rivers

the term of port-forwarding seems to be used very lightly here. – Facelifting

Answer 2

nginx is useful for forwarding HTTP on many platforms including Windows. It's easy to setup and extend with more advanced configuration. A basic configuration could look something like this:

events {}

http {
     server {

        listen 192.168.1.111:4422;

        location / {
            proxy_pass http://192.168.2.33:80/;
        }
     }
}

Baer

This is a good solution for HTTP forwarding, but only for HTTP forwarding (with all its caveats, e.g. websockets need additional config). For HTTPS forwarding or other arbitrary protocols (e.g. RDP) it's mostly useless. – Bartley

That said, it's an incredibly good solution for HTTP forwarding, so I'm glad it's here. – Netty

Why is that? You can stream forward whatever you like, including https – Cahan

@uli which settings do you tolking about ... It will be usefull to share – Qualified

@UliKöhler Nginx is a tool to decouple TCP connections. You can use it for HTTP, HTTPS, AMQP, WebSockets, whatever. It's used internally by tools all over for redirecting and managing general TCP connectivity. So, this is the correct solution. See also netfxharmonics.com/2016/03/nginx – Dulcet

Answer 3

I've used this little utility whenever the need arises: http://www.analogx.com/contents/download/network/pmapper/freeware.htm

The last time this utility was updated was in 2009. I noticed on my Win10 machine, it hangs for a few seconds when opening new windows sometimes. Other then that UI glitch, it still does its job fine.

Wolk