{"id":15633,"date":"2015-10-06T11:54:16","date_gmt":"2015-10-06T16:54:16","guid":{"rendered":"http:\/\/bucktownbell.com\/?p=15633"},"modified":"2015-10-06T11:57:39","modified_gmt":"2015-10-06T16:57:39","slug":"secmodel_securelevel-netbsd-section-9","status":"publish","type":"post","link":"http:\/\/bucktownbell.com\/?p=15633","title":{"rendered":"secmodel_securelevel"},"content":{"rendered":"<blockquote><p>The securelevel mechanism is intended to allow protecting the persistence of code and data on the system, or a subset thereof, from modification, even by the super-user by providing convenient means of &#8220;locking down&#8221; a system to a degree suited to its environment.<\/p><\/blockquote>\n<p>Source: <em><a href=\"http:\/\/www.unix.com\/man-page\/netbsd\/9\/secmodel_securelevel\/\">NetBSD 6.1.5 &#8211; man page for secmodel_securelevel (netbsd section 9) &#8211; Unix &amp; Linux Commands<\/a><br \/>\n<\/em><\/p>\n<blockquote><p>Highly secure mode may seem Draconian, but is intended as a last line of defence should the super-user account be compromised. Its effects preclude circumvention of file flags by direct modification of a raw disk device, or erasure of a file system by means of <a href=\"http:\/\/www.unix.com\/man-page\/netbsd\/8\/newfs\/\">newfs(8)<\/a>. Further, it can limit the potential damage of a compromised &#8220;firewall&#8221; by prohibiting the modification of packet filter rules. Preventing the system clock from being set backwards aids in post-mortem analysis and helps ensure the integrity of logs. Precision timekeeping is not affected because the clock may still be slowed.<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>The securelevel mechanism is intended to allow protecting the persistence of code and data on the system, or a subset thereof, from modification, even by the super-user by providing convenient means of &#8220;locking down&#8221; a system to a degree suited &hellip; <a href=\"http:\/\/bucktownbell.com\/?p=15633\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[217,28,107,101],"class_list":["post-15633","post","type-post","status-publish","format-standard","hentry","category-operating-systems","tag-kernel","tag-linux-command","tag-reference","tag-security"],"_links":{"self":[{"href":"http:\/\/bucktownbell.com\/index.php?rest_route=\/wp\/v2\/posts\/15633","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/bucktownbell.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bucktownbell.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bucktownbell.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/bucktownbell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15633"}],"version-history":[{"count":3,"href":"http:\/\/bucktownbell.com\/index.php?rest_route=\/wp\/v2\/posts\/15633\/revisions"}],"predecessor-version":[{"id":15636,"href":"http:\/\/bucktownbell.com\/index.php?rest_route=\/wp\/v2\/posts\/15633\/revisions\/15636"}],"wp:attachment":[{"href":"http:\/\/bucktownbell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15633"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bucktownbell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15633"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bucktownbell.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15633"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}