direct ethernet connection between two wirelessly connected Windows 7 laptops

Question

I've got two systems that are right next to each other, and connected wirelessly to the same router. I want to connect the two of them together with an ethernet cable - both have gig-e and autonegotiation so it should work. I DON'T need the second system to have internet, but I need any specific tweaks to be on that system only.

I do not need to share internet. I need RDP to work, and thats it

The wireless runs on a 192.168.1.x subnet and ICS always runs on a 192.168.0.x subnet so that wouldn't be a problem.

Ideally I want this layout. Can I do this with ICS, or there some other free or open source way?

     +---------------------------+           +-----------------------------+
     | Laptop 1                  |           | Laptop 2                    |
     | Client- mobile            |           | 'server'- stationary system |
     |                           <-----+----->                             |
     | RDP client                |           | RDP Server                  |
     | MUST have wireless access |  ethernet | Runs ICS or similar         |
     +---------+-----------------+           | wireless access optional    |
               |                             +-----------------------------+
               |
               |
               |
               |
               |
               |
               |
               +---------------+     wireless to internet

Answer 1

Apparently, assuming one of your systems supports autonegotiation the following process will work

1. connect both the systems with an ethernet cable - a plain vanilla one will work with autonegotiation, else you'll need a crossover. Most modern systems support it.

2. You'll need to set up both systems with static IP addresses, ideally from one of the 3 private blocks. Since most home networking uses the class C block, i chose to use the class A block, using the subnet mask 255.0.0 from here.

Currently i don't know what is the proper default gateway to use for the 'server', so as far as the systems are concerned, its a private network - so any sharing will need the ports explicitly opened in the firewall. I need to work out how to fix this.

In order to set up static IP addresses

go to Control Panel\Network and Internet\Network and Sharing Center

select the Local Area Connection

select properties

Select Internet Protocol Version 4 and hit properties

select use the following ip address for the 'server' ip address 10.0.0.1 subnet mask 255.0.0 default gateway

for the client ip address 10.0.0.2 subnet mask 255.0.0 default gateway 10.0.0.1

You can set the connection type as anything on the 'client' - it will be stuck as 'public' on the server.

1. you can test this with ping