您好,
关于如何启用匿名访问, 建议您参考以下两篇文章进行配置:
http://office.microsoft.com/zh-cn/windows-sharepoint-services-help/enable-anonymous-access-HA010113018.aspx
http://www.dynamics101.com/2013/05/sharepoint-2010-enable-anonymous-access/
谢谢
Patrick Liang TechNet Community Support