{"id":1871,"date":"2009-12-09T23:13:31","date_gmt":"2009-12-09T15:13:31","guid":{"rendered":"http:\/\/wp.chunhsin.idv.tw\/?p=1871"},"modified":"2009-12-09T23:13:31","modified_gmt":"2009-12-09T15:13:31","slug":"%e7%b6%b2%e5%b7%a5%e7%8f%ad%e7%ac%ac%e5%85%ab%e5%a4%a9","status":"publish","type":"post","link":"https:\/\/wp.chunhsin.idv.tw\/?p=1871","title":{"rendered":"\u7db2\u5de5\u73ed\u7b2c\u516b\u5929"},"content":{"rendered":"<p>\u4e16\u8cbf\u7db2\u5de5\u73ed\u7b2c\u516b\u5929<\/p>\n<p><!--more--><\/p>\n<p>\u6628\u5929\u6709\u63d0\u5230\u4e00\u7a2eIP\u7684\u898f\u5283\u65b9\u5f0f\u662f\u53ef\u4ee5\u5c07\u591a\u500bC\u985e\u7db2\u6bb5\u7d44\u5408\u6210\u4e00\u500b\u7db2\u6bb5\uff0c\u6b64\u7a2e\u65b9\u6cd5\u7a31\u4f5cCIDR\u3002\u82e5\u8981\u4f7f\u7528\u6b64\u7a2e\u898f\u5283\u65b9\u5f0f\uff0c\u9084\u9700\u642d\u914d\u6709\u652f\u63f4\u7684\u8def\u7531\u5668(Router)\u3002<\/p>\n<p>Router\u5728\u5224\u65b7IP\u662f\u5426\u70bapublic ip\u7684\u4f9d\u64da\u662f\u4e0a\u7db2\u67e5\u8a62\uff0c\u9084\u662f\u5df2\u5167\u5efa\uff1f\u50cfDNS server\u90fd\u6709\u5167\u5efa13\u53f0\u6839\u7db2\u57df\u4f3a\u670d\u5668\u4e00\u6a23\uff0cRouter\u7684\u8a2d\u8a08\u662f\u5426\u4e5f\u662f\u5982\u6b64\u3002\u4e0d\u904e\uff0cpublic ip\u61c9\u662f\u5df2\u898f\u5283\u597d\u7684\u8cc7\u8a0a\uff0c\u61c9\u53ef\u5167\u5efa\u800c\u7121\u9700\u5728\u4e0a\u7db2\u67e5\u8a62\uff0c\u518d\u8005\uff0c\u82e5\u7121\u6cd5\u4e0a\u7db2\uff0c\u53c8\u5982\u4f55\u67e5\u8a62\uff1f\u4f46DNS server\u4e5f\u53ef\u67b6\u5728\u5340\u57df\u5167\uff0c\u5982\u6b64\u4e00\u4f86\u4e5f\u7121\u6cd5\u627e\u5230\u6839\u7db2\u57df\u7684\u4f3a\u670d\u5668\u3002<\/p>\n<p>DHCP rely\uff0c\u5373DHCP\u4ee3\u7406\uff0c\u662f\u7528\u4f86\u63a5\u6536PC\u767c\u51fa\u7684\u8981\u6c42ip request\uff0c\u518d\u5c07request\u8f49\u9001\u7d66DHCP server\uff0c\u518d\u5c07DHCP server\u6240\u767c\u914d\u7684IP\u8f49\u9001\u7d66\u767c\u51farequest\u7684pc\u3002\u6b64\u7a2e\u61c9\u7528\u662f\u56e0\u70ba\u5340\u7db2\u5167\u53ef\u80fd\u6703\u5206\u5272\u6210\u597d\u5e7e\u500b\u7db2\u6bb5\uff0c\u800cDHCP\u7684\u5c01\u5305\u662f\u5ee3\u64ad\u5c01\u5305\uff0c\u7121\u6cd5\u50b3\u905e\u81f3\u4e0d\u540c\u7db2\u6bb5\uff0c\u6240\u4ee5\u4e0d\u540c\u7db2\u6bb5\u82e5\u9700\u8981DHCP\u670d\u52d9\u5c31\u5fc5\u9808\u5404\u7db2\u6bb5\u7686\u67b6\u8a2d\u4e00\u53f0DHCP server\u3002\u4f46DHCP rely\u5247\u53ef\u4ee5\u901a\u904erouter\u4f86\u7576\u64d4dhcp\u7684\u4ee3\u7406\u5546\uff0c\u5982\u6b64\u4e00\u4f86\uff0c\u4e0d\u540c\u7db2\u6bb5\u53ea\u9700\u8981\u4e00\u53f0dhcp server\uff0c\u4f46\u5404\u7db2\u6bb5\u81f3\u5c11\u8981\u6709\u4e00\u53f0dhcp rely\u7684\u8a2d\u5099\u3002<\/p>\n<p>\u4eca\u5929\u6709\u7c21\u55ae\u7684\u8b1b\u5230NAT\u7684\u904b\u4f5c\u539f\u7406\uff0c\u9084\u6709\u4e00\u6bb5flash\u7684\u6a21\u64ec\u52d5\u756b\u3002<\/p>\n<p>IP\u6a19\u982d\u6709\uff1a<br \/>\nver(4)\uff0c\u662f\u6307ip protocol\u7684\u7248\u672c<br \/>\nIHL(4)\uff0c\u662f\u6307ip\u6a19\u982d\u7684\u9577\u5ea6<br \/>\nTOS(8)\uff0ctype of service<br \/>\nTL(16)\uff0ctotal length\uff0cip datagram\u7684\u9577\u5ea6<br \/>\nID(16)\uff0cidentification\uff0cip datagram\u7684\u8b58\u5225\u78bc<br \/>\nflag(3)\uff0c\u901a\u5e38\u662f\u7528\u4f86\u5224\u65b7\u6b64\u5c01\u5305\u7684\u8cc7\u6599\u662f\u5426\u6709\u5206\u5272\uff0c\u6709\u7684\u8a71\u662f1<br \/>\nFO(13)\uff0cfragment offset\uff0c\u5982\u679c\u6709\u5206\u5272\u7684\u8a71\uff0c\u6b64\u8a0a\u606f\u53ef\u5224\u65b7\u70ba\u7b2c\u5e7e\u5c01\u5305<br \/>\nTTL(8)\uff0ctime to live\uff0c\u5c1a\u53ef\u905e\u9001\u7684\u6b21\u6578<br \/>\nPROT(8)\uff0c\u5373\u63a1\u7528\u7684\u901a\u8a0a\u5354\u5b9a<br \/>\nHC(16)\uff0chead checksum\uff0c\u6a19\u982d\u6aa2\u67e5\u78bc<br \/>\nSA(32)\uff0csource address\uff0c\u4f86\u6e90ip<br \/>\nDA(32)\uff0cdestination address\uff0c\u76ee\u7684ip<br \/>\n\u53e6\u6709\u5169\u500b\u9805\u76ee\u4e0d\u5e38\u7528\uff0c\u7565\u904e\u3002<\/p>\n<p>\u7db2\u8def\u904b\u4f5c\u904b\u578b\u7684\u52d5\u756b<\/p>\n<p><a href=\"http:\/\/wps.aw.com\/aw_kurose_network_4\/63\/16303\/4173750.cw\/index.html\" target=\"_blank\">http:\/\/wps.aw.com\/aw_kurose_network_4\/63\/16303\/4173750.cw\/index.html<\/a><br \/>\n\u9078\u64c7\u5de6\u908a\u9078\u55ae\u7684applet\u5373\u53ef\u9032\u5165\uff0c\u88e1\u9762\u6709\u5404\u7a2e\u4e3b\u984c\u7684\u904b\u4f5c\u6a21\u64ec\u52d5\u756b\u3002\u4f7f\u7528\u524d\u8acb\u78ba\u8a8d\u81ea\u5df1\u7684\u96fb\u8166\u6709\u5b89\u88ddjava\u3002<\/p>\n<p>\u539f\u4f86tracert\u662ftrace route\u7684\u610f\u601d\u3002\u4e0b\u5348\u7684\u6642\u9593\u5c31\u4f7f\u7528wireshark\u4f86\u64f7\u53d6tracert\u7684\u5c01\u5305\u4f86\u89e3\u6790\u3002\u89e3\u6790\u5c01\u5305\u7684\u5de5\u4f5c\u9084\u771f\u7684\u4e0d\u662f\u5f88\u6709\u8da3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e16\u8cbf\u7db2\u5de5\u73ed\u7b2c\u516b\u5929<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[139],"class_list":["post-1871","post","type-post","status-publish","format-standard","hentry","category-freetalking","tag-139"],"_links":{"self":[{"href":"https:\/\/wp.chunhsin.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/1871","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.chunhsin.idv.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.chunhsin.idv.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.chunhsin.idv.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.chunhsin.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1871"}],"version-history":[{"count":2,"href":"https:\/\/wp.chunhsin.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/1871\/revisions"}],"predecessor-version":[{"id":1873,"href":"https:\/\/wp.chunhsin.idv.tw\/index.php?rest_route=\/wp\/v2\/posts\/1871\/revisions\/1873"}],"wp:attachment":[{"href":"https:\/\/wp.chunhsin.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.chunhsin.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1871"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.chunhsin.idv.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}