![\"bug\"](\"https:\/\/s3lf.de\/blog\/wp-content\/uploads\/2014\/12\/bug.png\")
<\/a><\/p>\nI digged into the webinterface and found that there is a JavaScript function While I think it shouldn’t it does return „true“ for the mac address starting with 5C – but the lowest bit of the hexadecimal value 5C is not 1! The should have used<\/p>\n Quickly I found a workaround for this problem.<\/p>\n Just open your browser’s developer’s console and enter<\/p>\n After this you can save the settings. There is no router-side validation at all.<\/p>\n","protected":false},"excerpt":{"rendered":" We have one (a bit old) Linksys \/ Cisco ADSL router of the type WAG160N. Recently we decided to set up MAC\u00a0filtering (in addition to a WPA password of course). We only allow access to the WiFi after we know which MAC the person’s device has. The reason is that we have only a very […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-559","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/s3lf.de\/blog\/wp-json\/wp\/v2\/posts\/559","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/s3lf.de\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/s3lf.de\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/s3lf.de\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/s3lf.de\/blog\/wp-json\/wp\/v2\/comments?post=559"}],"version-history":[{"count":4,"href":"https:\/\/s3lf.de\/blog\/wp-json\/wp\/v2\/posts\/559\/revisions"}],"predecessor-version":[{"id":566,"href":"https:\/\/s3lf.de\/blog\/wp-json\/wp\/v2\/posts\/559\/revisions\/566"}],"wp:attachment":[{"href":"https:\/\/s3lf.de\/blog\/wp-json\/wp\/v2\/media?parent=559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/s3lf.de\/blog\/wp-json\/wp\/v2\/categories?post=559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/s3lf.de\/blog\/wp-json\/wp\/v2\/tags?post=559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}isMacMulticast<\/code><\/p>\n
\nfunction isMacMulticast(mac)
\n{
\nvar mac1=mac.toUpperCase();
\nvar byte=parseInt(mac1.substr(0,2));
\nif((byte&0x1)==0x1)\/\/if lowest bit of first byte is 1, then it is multicast address.
\nreturn true;
\nelse
\nreturn false;
\n}
\n<\/code><\/p>\n byte=parseInt(\"0x\" + mac1.substr(0,2));
\n<\/code><\/p>\n
\nisMacMulticast = function(e) { return false; }
\n<\/code><\/p>\n