After working with tech support on several occasions and spending many hours of my time I was finally told that there is a firmware defect that will not allow PPTP VPN to work with the V8 version of the WRT54G. I was then told to return my router and pick up a V6 version to solve the problem (!)
DD-WRT Forum :: View topic - PPTP Server on WRT54GL with Oct 02, 2009 DD-WRT VPN Setup Guide 2020 - Private Proxy Guide Jul 01, 2020 Assistance with PPTP VPN server build 21676 - dd-wrt.com Jul 28, 2015 How to setup VPN Server on DD-WRT router. (PPTP) - YouTube
DD-WRT Forum :: View topic - PPTP VPN server not working.
Refer DD-WRT troubleshooting steps. Disconnects. If you’re unable to connect to the VPN server or can occasionally but not for more than a few minutes at a time, and you use a WAN device that does PPPoE onboard (Like a SpeedStream 5100b DSL Modem) — You may have to disable the onboard PPPoE and use the PPPoE on the WRT54G.
3 Open PureVPN_DD_WRT_OVPN_Script.txt that you downloaded from above steps. Copy / paste the contents under command. Replace “username” with PureVPN Username like “purevpn0s123456“ Replace “password” with PureVPN “Password”. Under Remote servers, insert desired server address.
WRT54G Does not work with PPTP VPN - Linksys Community After working with tech support on several occasions and spending many hours of my time I was finally told that there is a firmware defect that will not allow PPTP VPN to work with the V8 version of the WRT54G. I was then told to return my router and pick up a V6 version to solve the problem (!)