Web traffic go through standard internet connection and other traffic through VPN

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http://serverfault.com – I am deploying a set of computers to a diverse set of geographical locations. However, I still need to be able to ssh into them to do updates. Once deployed, I would like all the standard internet traffic (email, web pages, ..) to not go through the VPN. However, I would like SSH to go through the VPN. How can this be set up? (HowTos)