You'll want a permit for trail code A15 JM Trail South—starting at Devils Postpile
For further info including the permit office address/phone etc. see below.
Date: Sun, 2 Jan 2011 13:58:21 -0500
Subject: [John Muir Trail] Where to request permit to start from Red's Meadows?
I am planning to begin my JMT hike this year from Red's Meadows. Can you someone tell me what agency do I have to request the permit from? also its' phone number? Thank you.