Connecting by IP through router (VB6)

[cryoburned]

So i'm using winsock to connect to a winsock on another computer.. the second computer is behind a router.. how do I connect to the router and get it to connect to a computer by its local ip in that router/network?

 

[dglienna]

The other person has to configure their router to forward certain packets (on certain ports) to a specific computer.
Once he does this, all packets that you send will be routed to him.

He can also bypass the router by setting up that IP to be in the DMZ, which passes packets directly.

-David
2006 & 2007 Microsoft Most Valuable Professional (MVP)
2006 Dell Certified System Professional (CSP)

 

[cryoburned]

I was hoping that wouldn't be the case. Microsoft's Remote Connection uses a Domain feature that I think allows you to connect through a router...

 

[strongm]

>uses a Domain feature that I think allows you to connect through a router.

You are talking about Universal Plug and Play's Internet Gateway Device.

If your router is not a UPnP NAT device then this feature may not work ...

 

[dilettante]

> If your router is not a UPnP NAT device then this feature may not work ...

Even if it is you may have problems. Some devices are not reliable at handling UPnP.

 

[cryoburned]

so say its was UPnP NAT what would I need to do?

 

[dilettante]

The remote end must make the proper UPnP calls to map the desired port(s). This simply allows the process to be automated, and a well behaved program will make calls to remove the mapping(s) when it terminates.

The private side of the NAT device still holds the keys. There is no procedure to let you break in from outside.