Connect to Device Behind Router (and Switch) over Internet [migrated]

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http://serverfault.com – I'm having a bit of trouble understanding which networking solution to use for my problem: I have a home network which includes several computers behind a router either directly through the router or through switches. The router I am using has DynDNS set up on it, I can VPN to my desktop via Hamachi, I can RDP via Windows 7 RDP, and I can do other sorts of fancy tricks. The one last thing I would like to do is browse to a networked device behind the router from my laptop over the internet. What can I use to accomplish this? I've tried port forwarding port 80 and port 21 to the IP of this d (HowTos)