OpsMgr 2007 Security Hardening Guide
Security seems to be a common stumbling block - particularly for those who need to harden security beyond what we provide in the default setup. The Security Hardening Guide has just released and is a great reference for those of you in the security trenches!
http://www.microsoft.com/downloads/details.aspx?FamilyID=244512ab-7419-4c93-8046-9c8e47e0f780&DisplayLang=en