Webserver VPN?

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http://serverfault.com – I want to run a webserver on a PC that doesn't have direct access to the internet.Incoming traffic is blocked. So I want to run the webserver and other people can access it. Is it possible to use a VPN and the IP address that the VPN allocates me to be accessible form outside the vpn,displaying my webpage? If such a service exists could you recommend one ? Thanks! (HowTos)