From what I understand, DDWRT doesn't support the RT-N56U. However, the newer versions of the Asus firmware have an option for VPN server, seen here. Is this the kind of setting that I would be able to use a VPN like www.privateinternetaccess.com or something similar, then plug the settings in? Or is this just for setting up my own VPN?

Aug 27, 2014 ASUS RT-N56U USER MANUAL Pdf Download | ManualsLib Page 1 User Guide RT-N56U Extreme Wireless N Router Ultra Slim, True Dual Band, and Gigabit Internet The ultra-thin and stylish RT-N56U features a 2.4GHz and 5GHz dual bands for an unmatched concurrent wireless HD streaming; built-in ASUS AiDisk and Download Master that; Page 2: Table Of Contents Setting up the Internet connection..11 Quick Internet Setup (QIS) with auto-detection Setting up your Asus wireless router - YouTube

May 15, 2013

Micro Center - How to configure an ASUS RT-AC68U Wireless Description: This article will show how to setup an ASUS RT-AC68U wireless router as a repeater. This will help to extend your wireless network’s range. Open a web browser, type 192.168.1.1 in the address bar, and then press Enter.; Enter the administrator username and password and then click OK. (The default username and password are both admin); In the Advanced Settings menu on the left ASUSTeK Computer Inc. - ASUS events Apr 17, 2014

Power up the router. Hold the reset button pressed for more than 5 seconds. Access the router at the default IP address 192.168.1.1 and admin/admin; Manual configure the router again (do NOT load a firmware backup file). Suggestion: write down your setting changes. Optional: delete the wireless connection profiles on your computers and connect

In the Brodaband share mode, RT-N56U connects to the Internet via PPPoE,Automatic IP, PPTP, L2TP, or Static IP. RT-N56U Access Point Internet Wireless Clients Wired Clients Please check the cable between the WAN port of RT-N56U and Internet is connected correctly or not. Setting up RT-N56U as an AP - Wireless Aug 31, 2014 Wireless bridge with ASUS RT-N56U | The Software Samurai