I am using pptp to access internet, I find that, the speed is about 200k/s if use pptp, the
speed is 1M/s without pptp. so how to raise the pptp speed? thanks!
This question doesn't really make sense. PPTP and the internet are two different things. Are you saying that you're connecting to a PPTP VPN, and when you do that, your internet is dropping to 200Kbps?
What happens when you join a VPN is that the OS assumes you want to send all traffic over this PPTP link and sets it to be your default gateway. This means that your internet traffic goes:
Which is kinda silly when you think about it. What you really want it:
You make absolutally no mention of which OS you're on, so I'm going to assume Windows. To do this on Windows, you need to:
If you NEED to keep all your internet traffic going over the PPTP link, then there's nothing you can do, unless you also control the remote network on the other side of the PPTP link, in which case that's a different question.