OpenVPN dd-wrt
From BTGuard Wiki
Setup Instructions
1. Connect and Log into your router by going to http://192.168.1.1/ or http://192.168.0.1/
2. Click on the Administration tab and then on Commands.
3. Copy the whole content of the ddwrt_openvpn_btguard.txt file in the Command Shell.
4. Type in your username and password as shown on the left.
Both username and password are case sensitive.
If UDP doesn't work, please type tcp instead of udp.