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class=\"wp-block-heading\" id=\"autoid-5-0-0\">4.2\u3001ARP\u534f\u8bae<\/h3>\n\n\n\n<p>arp\u534f\u8bae\u7531\u6765\uff1a\u8ba1\u7b97\u673a\u901a\u4fe1\u57fa\u672c\u9760\u543c\uff0c\u5373\u5e7f\u64ad\u7684\u65b9\u5f0f\uff0c\u6240\u6709\u4e0a\u5c42\u7684\u5305\u5230\u6700\u540e\u90fd\u8981\u5c01\u88c5\u4e0a\u4ee5\u592a\u7f51\u5934\uff0c\u7136\u540e\u901a\u8fc7\u4ee5\u592a\u7f51\u534f\u8bae\u53d1\u9001\uff0c\u5728\u8c08\u53ca\u4ee5\u592a\u7f51\u534f\u8bae\u65f6\u5019\uff0c\u6211\u95e8\u4e86\u89e3\u5230<\/p>\n\n\n\n<p>\u901a\u4fe1\u662f\u57fa\u4e8emac\u7684\u5e7f\u64ad\u65b9\u5f0f\u5b9e\u73b0\uff0c\u8ba1\u7b97\u673a\u5728\u53d1\u5305\u65f6\uff0c\u83b7\u53d6\u81ea\u8eab\u7684mac\u662f\u5bb9\u6613\u7684\uff0c\u5982\u4f55\u83b7\u53d6\u76ee\u6807\u4e3b\u673a\u7684mac\uff0c\u5c31\u9700\u8981\u901a\u8fc7arp\u534f\u8bae<\/p>\n\n\n\n<p><strong>arp\u534f\u8bae\u529f\u80fd\uff1a\u5e7f\u64ad\u7684\u65b9\u5f0f\u53d1\u9001\u6570\u636e\u5305\uff0c\u83b7\u53d6\u76ee\u6807\u4e3b\u673a\u7684mac\u5730\u5740<\/strong><\/p>\n\n\n\n<p><strong>\u534f\u8bae\u5de5\u4f5c\u65b9\u5f0f\uff1a\u6bcf\u53f0\u4e3b\u673aip\u90fd\u662f\u5df2\u77e5\u7684<\/strong><\/p>\n\n\n\n<p>\u4f8b\u5982\uff1a\u4e3b\u673a172.16.10.10\/24\u8bbf\u95ee172.16.10.11\/24<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/10\/image-90.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"760\" height=\"309\" data-original=\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/10\/image-90.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1282\"  sizes=\"(max-width: 760px) 100vw, 760px\" \/><\/div><\/figure>\n\n\n\n<p><strong>\u4e09\uff1a\u8fd9\u4e2a\u5305\u4f1a\u4ee5\u5e7f\u64ad\u7684\u65b9\u5f0f\u5728\u53d1\u9001\u7aef\u6240\u5904\u7684\u5b50\u7f51\u5185\u4f20\u8f93\uff0c\u6240\u6709\u4e3b\u673a\u63a5\u6536\u540e\u62c6\u5f00\u5305\uff0c\u53d1\u73b0\u76ee\u6807ip\u4e3a\u81ea\u5df1\u7684\uff0c\u5c31\u54cd\u5e94\uff0c\u8fd4\u56de\u81ea\u5df1\u7684mac<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/10\/image-91.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"438\" height=\"332\" data-original=\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/10\/image-91.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1283\"  sizes=\"(max-width: 438px) 100vw, 438px\" \/><\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"autoid-6-0-0\">4.3\u3001ICMP\u534f\u8bae<\/h3>\n\n\n\n<p>\u524d\u9762\u8bb2\u5230\u4e86\uff0cIP\u534f\u8bae\u5e76\u4e0d\u662f\u4e00\u4e2a\u53ef\u9760\u7684\u534f\u8bae\uff0c\u5b83\u4e0d\u4fdd\u8bc1\u6570\u636e\u88ab\u9001\u8fbe\uff0c\u90a3\u4e48\uff0c\u81ea\u7136\u7684\uff0c\u4fdd\u8bc1\u6570\u636e\u9001\u8fbe\u7684\u5de5\u4f5c\u5e94\u8be5\u7531\u5176\u4ed6\u7684\u6a21\u5757\u6765\u5b8c\u6210\u3002\u5176\u4e2d\u4e00\u4e2a\u91cd\u8981\u7684\u6a21\u5757\u5c31\u662fICMP(\u7f51\u7edc\u63a7\u5236\u62a5\u6587)\u534f\u8bae\u3002<\/p>\n\n\n\n<p>\u5f53\u4f20\u9001IP\u6570\u636e\u5305\u53d1\u751f\u9519\u8bef\uff0d\uff0d\u6bd4\u5982\u4e3b\u673a\u4e0d\u53ef\u8fbe\uff0c\u8def\u7531\u4e0d\u53ef\u8fbe\u7b49\u7b49\uff0cICMP\u534f\u8bae\u5c06\u4f1a\u628a\u9519\u8bef\u4fe1\u606f\u5c01\u5305\uff0c\u7136\u540e\u4f20\u9001\u56de\u7ed9\u4e3b\u673a\u3002\u7ed9\u4e3b\u673a\u4e00\u4e2a\u5904\u7406\u9519\u8bef\u7684\u673a\u4f1a.<\/p>\n\n\n\n<p>\u6211\u4eec\u4e00\u822c\u4e3b\u8981\u7528ICMP\u534f\u8bae\u68c0\u6d4b\u7f51\u7edc\u662f\u5426\u901a\u7545\uff0c\u57fa\u4e8eICMP\u534f\u8bae\u7684\u5de5\u5177\u4e3b\u8981\u6709ping 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\/><\/div><\/figure>\n\n\n\n<p>ping\u8fd9\u4e2a\u5355\u8bcd\u6e90\u81ea\u58f0\u7eb3\u5b9a\u4f4d\uff0c\u800c\u8fd9\u4e2a\u7a0b\u5e8f\u7684\u4f5c\u7528\u4e5f\u786e\u5b9e\u5982\u6b64\uff0c\u5b83\u5229\u7528ICMP\u534f\u8bae\u5305\u6765\u4fa6\u6d4b\u53e6\u4e00\u4e2a\u4e3b\u673a\u662f\u5426\u53ef\u8fbe\u3002<\/p>\n\n\n\n<p>\u539f\u7406\u662f\u7528\u7c7b\u578b\u7801\u4e3a0\u7684ICMP\u53d1\u8bf7 \u6c42\uff0c\u53d7\u5230\u8bf7\u6c42\u7684\u4e3b\u673a\u5219\u7528\u7c7b\u578b\u7801\u4e3a8\u7684ICMP\u56de\u5e94\u3002<\/p>\n\n\n\n<p><strong>ping\u7a0b\u5e8f\u6765\u8ba1\u7b97\u95f4\u9694\u65f6\u95f4\uff0c\u5e76\u8ba1\u7b97\u6709\u591a\u5c11\u4e2a\u5305\u88ab\u9001\u8fbe\u3002\u7528\u6237\u5c31\u53ef\u4ee5\u5224\u65ad\u7f51\u7edc\u5927\u81f4\u7684\u60c5\u51b5\u3002\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c ping\u7ed9\u51fa\u6765\u4e86\u4f20\u9001\u7684\u65f6\u95f4\u548cTTL\u7684\u6570\u636e\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/10\/image-93.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"165\" height=\"96\" data-original=\"https:\/\/qaqaq.top\/wp-content\/uploads\/2022\/10\/image-93.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" 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