I use DD-WRT on a an old link-sys wireless router. Any tips for setting up the remote access? I would like to access my desktop while out in the field.
If you have a static IP, you can setup your router as a VPN listener and use one of the many open-source VPN options on SourceForge (sourceforge.net). I personally use OpenVPN.
If you don’t have a static IP, use the DDNS setup page in DD-WRT and create a free DDNS account on one of the supported providers.
When you’re out in the field, it’s just a matter of firing up OpenVPN, tunnel to your home network, and it’s like you’re in your house. Either TS into your desktop (assuming you use Windows) or invest in a console card for your PC like a Dell DRAC or an older HP rILO board, depending on your level of remote access need. If your PC supports wake on LAN, you can set it up to turn on whenever you need to access it, in the event it’s turned off.