http://unixreference.net/articles/bsd/openbsd/security/index.html BSD &gt; OpenBSD &gt; Security zh-cn Copyright(c) 2001-2007 OLDHAND ORGANIZATION, All Rights reserved. <br/><a href='http://www.dedecms.com' target='_blank'>Power by DedeCms 织梦内容管理系统</a> webmaster@unixreference.net