Sorry to redirect, but have you considered OpenVPN? If you are only connecting Win/Mac/Linux/Unix VPN Clients, I find it easy, secure and robust.
As to PPTP, I’m afraid I cannot help (never needed it/never did it).
On Nov 2, 2010, at 7:39 PM, mattias wrote:
How to setup a vpn server on centos? I can't find the pptpd in any repo
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