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You will need to open your router and forward port 1723 UDP and TCP to the servers local IP for PPtP and you may also have to open PPTP Passthrough. Port usage for IPSec is 500, 50-51. These ports will have to be forwarded to the VPN server's IP as well.

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Some one had posted this on one of my previous questions. I understand what I need to do but I confused about how to do it with my router. Here is a link to the port forwarding guide to my router. I understand how to do everything until I reach page 7. http://www.qwest.com/internethelp/modems/motorola-3347/pdf/18919_Motorola3347_PortFwd.pdf
What numbers am I supposed to put in the blanks?