{"id":5375,"date":"2021-12-29T15:24:09","date_gmt":"2021-12-29T23:24:09","guid":{"rendered":"https:\/\/www.xh86.me\/?p=5375"},"modified":"2021-12-29T15:24:09","modified_gmt":"2021-12-29T23:24:09","slug":"ros-%e5%a6%82%e4%bd%95%e5%b0%81%e4%ba%8c%e7%ba%a7%e8%b7%af%e7%94%b1%e5%99%a8%e5%8f%8a%e7%a0%b4%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.xh86.me\/?p=5375","title":{"rendered":"ROS \u5982\u4f55\u5c01\u4e8c\u7ea7\u8def\u7531\u5668\u53ca\u7834\u89e3"},"content":{"rendered":"<div id=\"cnblogs_post_body\" class=\"blogpost-body blogpost-body-html\">\n<p>\u4e00\u3001TTL\uff1a\u751f\u5b58\u65f6\u95f4<\/p>\n<p>\u5f53\u8def\u7531\u5668\u6536\u5230IP\u5305\u7684TTL\u503c\u662f0\u6216\u80051\u7684\u65f6\u5019\uff0c\u5982\u679c\u76ee\u7684\u5730\u5740\u4e0d\u662f\u81ea\u5df1\uff0c\u5219\u76f4\u63a5\u4e22\u5f03\u6b64\u5305\u800c\u4e0d\u8fdb\u884c\u8f6c\u53d1<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/images2018.cnblogs.com\/blog\/1349423\/201803\/1349423-20180320100259500-882945272.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" class=\"medium-zoom-image\" data-original=\"https:\/\/images2018.cnblogs.com\/blog\/1349423\/201803\/1349423-20180320100259500-882945272.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" \/><\/div><\/p>\n<p>\u4e8c\u3001\u5c01\u7684\u4e09\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p>1\u3001\u4f7f\u7528Prerouting\u94fe\uff1a<\/p>\n<p>\u6b64\u89c4\u5219\u5b9e\u5728\u5305\u5230\u8fbeROS\u8fd8\u6ca1\u6709\u88abROS\u5904\u7406\u524d\u4f5c\u7528\u7684\uff0c\u56e0\u6b64\uff0cTTL\u8981\u8003\u8651\u5230ROS\u51cf1\u7684\u60c5\u51b5\uff0c\u6240\u4ee5TTL\u503c\u5e94\u8be5\u8bbe\u7f6e\u4e3a2\u3002\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n<p><strong>chain=prerounting action=change-ttl new-ttl=set\uff1a2 connection-state=established in-interdace=WAN<\/strong><\/p>\n<p>IP \u2014\u2014 Firewall \u2014\u2014 Mangle \u2014\u2014 \u70b9\u51fb\u52a0\u53f7<\/p>\n<p>\uff08General\uff09 \u2014\u2014 Chain\uff1aprerouting \u2014\u2014 In.Interface\uff1aWAN \u2014\u2014 Connection State\uff1aestablished<\/p>\n<p>\uff08Action\uff09 \u2014\u2014 Action\uff1achange TTL \u2014\u2014 New TTL\uff1a2<\/p>\n<p>2\u3001\u4f7f\u7528forward\u94fe\uff1a<\/p>\n<p><strong>\u3000\u3000\u3000\u3000chain=forward action=change-ttl new-ttl=set:0 connection-state=establisbed out-interface=LAN<\/strong><\/p>\n<p>IP \u2014\u2014 Firewall \u2014\u2014 Mangel \u2014\u2014 \u70b9\u51fb\u52a0\u53f7<\/p>\n<p>\uff08General\uff09 \u2014\u2014 Chain\uff1aforward \u2014\u2014 Out.Interface\uff1aLAN\u2014\u2014 Connection State\uff1aestablished<\/p>\n<p>\uff08Action\uff09 \u2014\u2014 Action\uff1achange TTL \u2014\u2014 New TTL\uff1a0<\/p>\n<p>3\u3001\u4f7f\u7528postrouting\u94fe\uff1a<\/p>\n<p><strong>chain=postrouting action=change-ttl new-ttl=set:0 connection-state=establisbed out-interface=LAN<\/strong><\/p>\n<p>IP \u2014\u2014 Firewall \u2014\u2014 Mangel \u2014\u2014 \u70b9\u51fb\u52a0\u53f7<\/p>\n<p>\uff08General\uff09 \u2014\u2014 Chain\uff1apostrouting \u2014\u2014 Out.Interface\uff1aLAN\u2014\u2014 Connection State\uff1aestablished<\/p>\n<p>\uff08Action\uff09 \u2014\u2014 Action\uff1achange TTL \u2014\u2014 New TTL\uff1a0<\/p>\n<p><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/images2018.cnblogs.com\/blog\/1349423\/201803\/1349423-20180320111610198-1597324319.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  decoding=\"async\" class=\"medium-zoom-image\" data-original=\"https:\/\/images2018.cnblogs.com\/blog\/1349423\/201803\/1349423-20180320111610198-1597324319.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-5375","post","type-post","status-publish","format-standard","hentry","category-mikrotik"],"_links":{"self":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/5375","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5375"}],"version-history":[{"count":1,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/5375\/revisions"}],"predecessor-version":[{"id":5376,"href":"https:\/\/www.xh86.me\/index.php?rest_route=\/wp\/v2\/posts\/5375\/revisions\/5376"}],"wp:attachment":[{"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xh86.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}