Access to Sophos KnowledgeBase, Documentation, Community Forum
The Sophos Knowledgebase, Community forum, and Documentatoin are open to the public - No login required.
http://www.sophos.com/en-us/support/knowledgebase.aspx
http://www.sophos.com/en-us/support/documentation.aspx
http://community.sophos.com/
Thanks to Steve Kibler for spotting this