\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u9762\u5411\u81ea\u5b66TCP\/IP\u7684\u8bfb\u8005\u7684.\u56e0\u4e3a\u5e02\u9762\u4e0a\u8bb2\u89e3\u8ba1\u7b97\u673a\u7f51\u7edc\u7684\u4e66\u867d\u7136\u975e\u5e38\u591a\uff0c\u4f46\u662f\u4e2a\u4eba\u8ba4\u4e3a\u6ca1\u6709\u4e00\u672c\u53ef\u4ee5\u505a\u5230\u6df1\u5165\u6d45\u51fa\u7684.\u90fd\u662f\u7167\u642c\u67d0\u4e9b\u6743\u5a01\u4e66\u7c4d\u4e2d\u7684\u6982\u5ff5\uff0c\u4f7f\u5f97\u5f88\u591a\u8bfb\u8005\u8bfb\u4e86\u4e4b\u540e\u8fd8\u662f\u6ca1\u6709\u5177\u4f53\u6982\u5ff5.\u5e0c\u671b\u6211\u5199\u7684\u4e1c\u897f\u53ef\u4ee5\u8ba9\u5927\u5bb6\u6709\u4e2a\u5177\u4f53\u6982\u5ff5\uff0c\u800c\u4e0d\u662f\u53ea\u505c\u7559\u5728\u80fd\u591f\u80cc\u51fa\u5b98\u65b9\u7684\uff0c\u4e25\u8c28\u7684\uff0c\u6df1\u5965\u7684\u6982\u5ff5.<\/p>\n
TCP\/IP\u57fa\u7840\u8bb2\u5ea7 \u8bfb\u8fc7\u5173\u4e8e\u7f51\u7edc\u7684\u8bfe\u7a0b\u7684\uff0c\u90fd\u77e5\u9053ISO-OSI 7\u5c42\u534f\u8bae\u8fd9\u4e2a\u540d\u8bcd\uff0c\u8bb8\u591a\u4e66\u7c4d\u90fd\u4f1a\u5177\u4f53\u7684\u753b\u51fa\u90a3\u5e45\u56fe\uff0c\u7136\u540e\u6807\u6ce8\u4e0a\u7269\u7406\u5c42\uff0c\u6570\u636e\u94fe\u8def\u5c42\uff0c\u7f51\u7edc\u5c42\u7b49\u7b49.\u80cc\u7684\u5927\u5bb6\u8981\u6b7b.\u4f46\u662f\u5374\u53c8\u4e0d\u77e5\u9053\u5177\u4f53\u8fd9\u4e9b\u5c42\u6b21\u5e72\u5417\u7528\u7684\u52d2\uff1f<\/p>\n
\u5176\u5b9e\u5728\u4e92\u8054\u7f51\u4e2d\uff0c\u7531\u4e8e\u5b9e\u9645\u4f7f\u7528\u7684\u662fTCP\/IP\u6a21\u578b\uff0c\u4e5f\u5c31\u662fDOD\u6a21\u578b(\u73b0\u5728\u4e0d\u77e5\u9053\u6ca1\u5173\u7cfb\uff0c\u540e\u9762\u4f1a\u8bf4).\u6240\u4ee57\u5c42\u6a21\u578b\u5728\u73b0\u5b9e\u7f51\u7edc\u73af\u5883\u4e2d\u53ea\u662f\u4e00\u4e2a\u7406\u8bba\u4e0a\uff0c\u5b66\u7a76\u6d3e\u7684\u4e1c\u897f.\u8fd9\u4e2a\u6a21\u578b\u4e2d\uff0c\u6211\u4eec\u771f\u6b63\u5173\u5fc3\u7684\u662f\u4e0b\u9762\u76843\u5c42.<\/p>\n
1.\u7269\u7406\u5c42 .\u54e6.\u662f\u7684.\u8fd9\u4e2a\u540d\u8bcd\u8fd8\u7b97\u5bb9\u6613\u4e86\u89e3.\u7f51\u5361\u8fd8\u6709\u90a3\u4e9b\u7f51\u7ebf\u6784\u6210\u4e86\u8fd9\u4e00\u5c42.\u90a3\u4e9b\u5728\u7f51\u7ebf\u4e2d\u4f20\u64ad\u7684\u4e8c\u8fdb\u5236\u6570\u636e\u6d41\u662f\u8fd9\u5c42\u7684\u5177\u4f53\u8868\u8c61.\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u4e00\u5c42\u4e0a\u9762\u6ca1\u6709\u4ec0\u4e48\u534f\u8bae(\u4e0d\u662f\u5f88\u7cbe\u786e\u7684\u8bf4\u6cd5\uff0c\u4f46\u662f\u4f60\u53ef\u4ee5\u8fd9\u4e48\u7406\u89e3).\u6709\u7684\u90fd\u662f\u7535\u6d41\u800c\u5df2.\u6211\u4eec\u628a\u4e24\u53f0\u673a\u5668\u7528\u7f51\u7ebf\u8fde\u8d77\u6765.\u6216\u8005\u7528HUB\u628a\u673a\u5668\u90fd\u8fde\u8d77\u6765\uff0c\u8fd9\u4e9b\u5de5\u4f5c\u5c31\u662f\u7269\u7406\u5c42\u7684\u5de5\u4f5c.<\/p>\n
\u67092\u4e2a\u8bbe\u5907\u5c5e\u4e8e\u7269\u7406\u5c42\u7684\uff0c\u4e00\u4e2a\u662f\u4e2d\u7ee7\u5668\uff0c\u4e00\u4e2a\u662fHUB.\u5927\u5bb6\u77e5\u9053.\u7269\u7406\u4e0a\u9762\u7684\u8fde\u7ebf\u8ddd\u79bb\u4e00\u957f\u5c31\u4f1a\u4ea7\u751f\u7535\u4fe1\u53f7\u7684\u8870\u51cf.\u4e3a\u4e86\u91cd\u65b0\u52a0\u5f3a\u8fd9\u4e2a\u4fe1\u53f7\uff0c\u6211\u4eec\u5c31\u9700\u8981\u5728\u4e00\u5b9a\u8ddd\u79bb\u4e4b\u540e\u52a0\u4e0a\u4e00\u4e2a\u4fe1\u53f7\u653e\u5927\u5668\uff0c\u8fd9\u5c31\u662f\u4e2d\u7ee7\u5668(repeater)<\/p>\n
\u6069...\u8fd9\u4e2a\u6bd4\u8f83\u5bb9\u6613\u7406\u89e3.repeater\u5c31\u662f\u8fde\u63a5\u57282\u6839\u7f51\u7ebf\u4e4b\u95f4\u7684\u4e48.\u6ca1\u6709\u505a\u4efb\u4f55\u5904\u7406.\u6240\u4ee5\u53ea\u662f\u4e00\u4e2a\u7269\u7406\u8bbe\u5907.\u5c5e\u4e8e1\u5c42\u7684.<\/p>\n
\u90a3\u4e48\u96c6\u7ebf\u5668(HUB) \u5462\uff1f\u8fd9\u4e2a\u600e\u4e48\u4f1a\u662f\u57281\u5c42\uff1f\uff1f\uff1f\u4f3c\u4e4e\u975e\u5e38\u96be\u4ee5\u7406\u89e3.<\/p>\n
\u5f53\u6211\u8bf4\u51faHUB\u7684\u672c\u8d28\uff0c\u5927\u5bb6\u5c31\u80fd\u591f\u6e05\u695a\u4e86\u89e3\u4e86<\/p>\n
HUB\u7684\u672c\u8d28\u5176\u5b9e\u53ea\u662f\u4e00\u4e2a\u591a\u53e3\u4e2d\u7ee7\u5668(MULTI PORT REPEATER) .\u554a...\u8fd9\u6837\u5927\u5bb6\u80fd\u591f\u7406\u89e3\u4e86.HUB\u4e0d\u53eb\u591a\u53e3\u4e2d\u7ee7\u5668\u5176\u5b9e\u53ea\u662f\u4e3a\u4e86\u9500\u552e\u4e0a\u9762\u7684\u7b56\u7565.\u4ed6\u7684\u672c\u8d28\u5c31\u662f\u8fde\u63a5\u591a\u6839\u7f51\u7ebf\u7684\u4e00\u4e2a\u7269\u7406\u8bbe\u5907.\u4e5f\u662f\u4e0d\u5bf9\u7ecf\u8fc7\u7684\u7535\u4fe1\u53f7\u505a\u4efb\u4f55\u903b\u8f91\u5904\u7406\u7684.<\/p>\n
2.\u6570\u636e\u94fe\u8def\u5c42<\/p>\n
\u6b27~\u8fd9\u4e2a\u540d\u8bcd\u6709\u4e9b\u522b\u626d\u4e86.DATA LINK\u5c42.\u82f1\u6587\u4f3c\u4e4e\u66f4\u52a0\u5bb9\u6613\u7406\u89e3.<\/p>\n
\u8fd9\u4e2a\u5c42\u9762\u4e0a\u9762\u7684\u4e1c\u897f\u4e0d\u518d\u662f\u7535\u4fe1\u53f7\u4e86.\u800c\u662fDATA\u4e86.\u5bf9\uff0c\u65e2\u7136\u662fDATA\u5c31\u6709\u4e86\u903b\u8f91\u5173\u7cfb\u4e86.\u8fd9\u4e2a\u5c42\u9762\u4e0a\u9762\u7684\u57fa\u672c\u5355\u4f4d\u662f\u5e27(Frame) .\u8fd9\u5c42\u548c\u7269\u7406\u5c42\u7684\u63a5\u89e6\u662f\u6700\u7d27\u5bc6\u7684.\u4ed6\u662f\u628a\u4ece\u7f51\u7ebf\u4e0a\u9762\u4f20\u8f93\u7684\u7535\u6d41\u8f6c\u6362\u62100\u548c1\u7684\u7ec4\u5408.<\/p>\n
\u7269\u7406\u5c42\u53ea\u662f\u7f51\u5361\u5bf9\u7f51\u7ebf\u53d1\u51fa\u6216\u8005\u63a5\u53d7\u5404\u79cd\u7535\u5e73\u4fe1\u53f7\uff0c\u90a3\u5c31\u662f\u8bf4\u7269\u7406\u5c42\u662f\u65e0\u6cd5\u5224\u522b\u7535\u6d41\u7684\u6765\u6e90\u548c\u76ee\u6807\u7684.\u90a3\u4e48\u628a\u7535\u6d41\u6253\u62100\u548c1\u7684\u5e27\u4e4b\u540e.\u91cc\u9762\u5c31\u6709\u903b\u8f91\u6570\u636e\u4e86.\u6709\u4e86\u6570\u636e\uff0c\u5c31\u53ef\u4ee5\u5224\u522b\u6570\u636e\u4ece\u4f55\u800c\u6765\uff0c\u5230\u4f55\u5904\u53bb.\u6240\u4ee5\u4e5f\u5c31\u53ef\u4ee5\u771f\u6b63\u7684\u5f62\u6210LINK.<\/p>\n
\u65e2\u7136\u53ef\u4ee5\u5224\u522b\u5730\u5740\uff0c\u90a3\u4e48\u5730\u5740\u662f\u6309\u7167\u4ec0\u4e48\u6765\u5224\u522b\u7684\u5462\uff1f<\/p>\n
\u90a3\u5c31\u662f\u6700\u91cd\u8981\u7684\u6982\u5ff5\u4e4b\u4e00:MAC\u5730\u5740<\/p>\n
\u5927\u5bb6\u80af\u5b9a\u90fd\u542c\u8bf4\u8fc7\u6211\u4eec\u7684\u7f51\u5361\u90fd\u6709MAC\u5730\u5740<\/p>\n
\u6709\u4e9b\u4eba\u53ef\u80fd\u4e5f\u77e5\u9053MAC\u5730\u5740\u90fd\u662f\u552f\u4e00\u7684.<\/p>\n
\u5bf9.MAC\u5730\u5740\u662f\u5168\u7403\u552f\u4e00\u7684.\u4e5f\u5c31\u662f\u8bf4\u4f60\u7684\u7f51\u5361\u867d\u7136\u4fbf\u5b9c.\u4f46\u662f\u4ed6\u4e5f\u662f\u4e16\u754c\u4e0a\u72ec\u4e00\u65e0\u4e8c\u7684.<\/p>\n
\u6709\u4e9b\u4eba\u8bf4\u4ed6\u53ef\u4ee5\u6539MAC.\u90a3\u5c31\u4e0d\u662f\u552f\u4e00\u4e86.\u5bf9.\u867d\u7136\u53ef\u4ee5\u66f4\u6539\uff0c\u90a3\u53ea\u662f\u6b3a\u9a97\u4e0a\u5c42\u5bf9\u5c01\u5305\u91cc\u9762\u7684MAC\u5730\u5740\u8fdb\u884c\u6539\u5199.\u4f60\u7f51\u5361\u771f\u6b63\u7684MAC\u5730\u5740\u662f\u56fa\u5316\u7684.\u65e0\u6cd5\u4fee\u6539\u7684.<\/p>\n
\u57fa\u7840\u77e5\u8bc6\u4e8c
\n2: TCP\/IP.\u771f\u5b9e\u4e16\u754c\u7684\u6a21\u578b<\/p>\n
\u4e0a\u4e00\u8bb2\u91cc\u9762\u6211\u4eec\u8bf4\u8fc7OSI 7\u5c42\u6a21\u578b\u53ea\u662f\u4e00\u4e2a\u7406\u8bba\u6a21\u578b,\u800c\u5b9e\u9645\u4e2d\u53ea\u9700\u8981\u4fdd\u8bc17\u5c42\u7684\u529f\u80fd\u80fd\u591f\u5b9e\u73b0,\u5b9e\u9645\u5206\u5c42\u65e0\u9700\u6309\u71677\u5c42\u6765\u5206.\u800c\u4e14\u5982\u679c\u771f\u7684\u52067\u5c42.\u90a3\u4e48\u6570\u636e\u5904\u7406\u7684\u901f\u5ea6\u4fbf\u8981\u6162\u8bb8\u591a.<\/p>\n
\u5728\u5b9e\u9645\u5e94\u7528\u4e2d.\u4f7f\u7528\u6700\u591a\u7684\u4fbf\u662fDoD\u6a21\u578b.\u4e5f\u6210\u4e3aTCP\/IP\u534f\u8bae\u7c07<\/p>\n
DoD\u6a21\u578b(Department Of Defanse Model \u7f8e\u56fd\u56fd\u9632\u90e8\u6a21\u578b) \u987e\u540d\u601d\u4e49,\u662f\u7f8e\u56fd\u56fd\u9632\u90e8\u8bbe\u8ba1\u7684\u4e00\u4e2a\u7f51\u7edc\u6a21\u578b.\u6700\u65e9\u7528\u4e8eARPANET.\u8fd9\u4e9b\u8bdd\u53ef\u80fd\u5728\u8bb8\u591a\u6559\u6750\u7684\u7b2c\u4e00\u7ae0\u5c31\u4f1a\u8bb2\u4e86.\u4f46\u662f\u4e00\u822c\u6559\u6750\u5bf9\u4e8eDoD\u6a21\u578b\u4e0eOSI\u6a21\u578b\u5bf9\u5e94\u5173\u7cfb\u90fd\u6ca1\u6709\u8bb2\u5230.\u6216\u8005\u5f88\u591a\u662f\u6a21\u7cca\u6216\u8005\u9519\u8bef\u7684.<\/p>\n
\u5728\u8fd9\u91cc\u6211\u5c31\u8981\u63cf\u8ff0\u4e00\u4e0b2\u8005\u5bf9\u5e94\u5173\u7cfb.OSI\u6a21\u578b\u67097\u5c42\u6211\u4eec\u5df2\u7ecf\u77e5\u9053\u4e86,\u800cDoD\u6a21\u578b\u5219\u53ea\u67094\u5c42.\u4e0b\u9762\u662f\u5bf9\u5e94\u5173\u7cfb<\/p>\n
OSI DoD<\/p>\n
7.Application \u2510<\/p>\n
6.Presentation |-> 4. Application\/Process<\/p>\n
5.Session \u2518<\/p>\n
4.Transport ---> 3. Host to Host<\/p>\n
3.Network ---> 2. Internet<\/p>\n
2.Data Link \u252c-> 1. Network Access<\/p>\n
1.Physical \u2518<\/p>\n
\u7531\u4e8e\u6211\u4e0d\u4f1a\u5236\u8868\u7b26.\u6240\u4ee5\u56fe\u6709\u4e9b\u96be\u770b.\u5176\u5b9e\u5c31\u662fOSI\u76841.2\u5c42\u5bf9\u5e94DoD\u7684\u7b2c1\u5c42<\/p>\n
OSI\u76845.6.7\u5bf9\u5e94DoD\u7684\u7b2c4\u5c42<\/p>\n
\u5176\u5b9e\u8fd9\u4e2a\u8fd8\u662f\u6bd4\u8f83\u5bb9\u6613\u8bb0\u5fc6\u7684<\/p>\n
\u7531\u4e8e\u7269\u7406\u5c42\u548c\u6570\u636e\u94fe\u8def\u5c42\u975e\u5e38\u5bc6\u5207.\u6240\u4ee5\u5206\u4e3a\u4e00\u4e2a.\u7136\u540e\u4e0a\u9762\u4f9d\u6b21\u5bf9\u5e94,\u6700\u4e0a\u9762\u7684\u4e00\u5927\u5757\u6210\u4e3a\u5e94\u7528\u5c42(\u5904\u7406\u5c42)<\/p>\n
\u73b0\u5728\u6211\u4eec\u6709\u4e86\u4e00\u4e2a\u53ef\u7528\u7684\u5b9e\u9645\u6a21\u578b\u4e86.\u4e0d\u8fc7\u4e00\u822c\u6211\u4eec\u5728\u63cf\u8ff0\u67d0\u4e2a\u8bbe\u5907\u6216\u8005\u534f\u8bae\u7684\u65f6\u5019.\u8fd8\u662f\u4f1a\u4f7f\u7528OSI\u7684\u6a21\u578b,\u6bd4\u5982\u6211\u4eec\u5728\u8ba8\u8bbaSWITCH\u7684\u65f6\u5019,\u5c31\u4f1a\u8bf4\u4ed6\u662f\u4e00\u4e2a2\u5c42\u7684\u8bbe\u5907.\u800c\u8def\u7531\u5668\u662f\u4e00\u4e2a3\u5c42\u7684\u8bbe\u5907,\u8fd8\u4f1a\u6709\u4e00\u4e9b\u7279\u6b8a\u7684\u8bbe\u5907,\u6bd4\u59823\u5c42\u4ea4\u6362\u673a,4\u5c42\u4ea4\u6362\u673a.\u8fd9\u4e9b\u90fd\u662f\u4f7f\u7528OSI\u6a21\u578b\u8fdb\u884c\u5206\u7c7b\u7684.\u8fd9\u70b9\u5927\u5bb6\u4e0d\u8981\u641e\u6df7\u6dc6\u4e86.<\/p>\n
\u6211\u4eec\u4e00\u76f4\u542c\u8bf4TCP\u6216\u8005UDP.\u8fd8\u6709\u4ec0\u4e48SMTP.POP3.\u8fd9\u4e9b\u534f\u8bae\u5230\u5e95\u662f\u5728\u54ea\u4e00\u5c42\u5b9a\u4e49\u7684\u90a3?\u63a5\u4e0b\u6765\u7684\u4e00\u5f20\u56fe\u4f1a\u7ed9\u5927\u5bb6\u4e00\u4e2a\u975e\u5e38\u6e05\u6670\u7684\u6982\u5ff5\u4e86(\u4e0d\u80fd\u7b97\u662f\u56fe\u62c9 \ud83d\ude00 ).<\/p>\n
4. APPLICATION<\/p>\n
HTTP,FTP,telnet,SNMP,SMTP,POP3,DNS \u7b49\u7b49<\/p>\n
3.Host to Host<\/p>\n
TCP,UDP<\/p>\n
2.internet<\/p>\n
ICMP,ARP,RARP,IP<\/p>\n
1.Network Access<\/p>\n
Ethernet,FastEthernet,Token Ring \u7b49\u7b49<\/p>\n
\u6069...\u8fd9\u4e0b\u6e05\u695a\u4e86.\u8ba9\u6211\u4eec\u4ece\u4e0b\u81f3\u4e0a\u6765\u770b\u770b<\/p>\n
\u9996\u5148\u662f\u6700\u4e0b\u5c42\u7684.\u5305\u62ec\u4e86\u4ee5\u592a\u7f51,\u5feb\u901f\u4ee5\u592a\u7f51,\u8fd8\u6709\u73b0\u5728\u7684\u5343M\u4ee5\u592a\u7f51\u7b49\u7b49\u7684\u534f\u8bae,\u8fd9\u4e9b\u534f\u8bae\u89c4\u5b9a\u4e86\u7ebf\u7f06\u7684\u7ede\u6570.\u8fde\u63a5\u65b9\u5f0f\u7b49\u7b49\u7269\u7406\u5c42\u7684\u4e1c\u897f.\u8fd8\u6709\u5e95\u5c42\u4f7f\u7528MAC\u901a\u8baf\u7684\u65b9\u5f0f\u7b49\u7b49.<\/p>\n
\u63a5\u4e0b\u6765\u662fIP.ARP\u8fd9\u4e9b.IP\u5728OSI\u6a21\u578b\u7684\u65f6\u5019\u4e5f\u8bf4\u8fc7.\u901a\u8fc7IP\u5730\u5740.\u6211\u4eec\u5728\u8f6c\u53d1\u5305\u7684\u65f6\u5019\u65e0\u9700\u77e5\u9053\u5177\u4f53\u76ee\u6807\u673a\u7684\u4f4d\u7f6e.\u800c\u8def\u7531\u5668\u81ea\u7136\u4f1a\u6839\u636e\u8def\u7531\u8868\u6765\u8f6c\u53d1.\u6700\u540e\u4e00\u7ad9\u4e00\u7ad9\u7684\u6162\u6162\u4f20\u9012.\u8fbe\u5230\u6700\u7ec8\u76ee\u6807.\u800cARP\u534f\u8bae\u5c31\u662f\u5728IP\u548cMAC\u4e4b\u95f4\u8f6c\u6362\u7528\u7684.<\/p>\n
\u6211\u5728\u4e0a\u4e00\u7ae0\u63d0\u8fc7,\u7531\u4e8e\u6709\u4e86\u8def\u7531\u5668,IP,\u6574\u4e2a\u7f51\u7edc\u624d\u771f\u6b63\u80fd\u591f\u8986\u76d6\u5168\u7403.\u6240\u4ee5\u8fd9\u4e00\u5c42\u53eb\u505ainternet\u5927\u5bb6\u4e5f\u5e94\u8be5\u5bb9\u6613\u8bb0\u5fc6\u4e86.<\/p>\n
WOW.TCP,UDP\u662f\u6211\u4eec\u542c\u8bf4\u6700\u591a\u7684\u4e86.\u4ed6\u662f\u5c5e\u4e8e\u63a7\u5236\u7f51\u7edc\u8fde\u63a5\u7684.\u5728OSI\u79f0\u4e3aTransport.\u4f20\u8f93\u5c42.\u5728DoD\u5185\u662fHost to Host \u7aef\u5bf9\u7aef.\u610f\u601d\u5176\u5b9e\u662f\u4e00\u6837\u7684.\u5c31\u662f\u5728\u57282\u53f0\u8ba1\u7b97\u673a\u4e4b\u95f4\u6784\u5efa\u51fa\u4e00\u4e2a\u865a\u62df\u7684\u901a\u8baf\u901a\u9053\u6765.<\/p>\n
\u6700\u4e0a\u9762\u4e00\u5c42\u5c31\u65e0\u7a77\u65e0\u5c3d\u4e86.\u6240\u6709\u7684\u6700\u7ec8\u5e94\u7528\u5c42\u7684\u4e1c\u897f\u90fd\u5728\u8fd9\u91cc,\u4f60\u751a\u81f3\u53ef\u4ee5\u5b9a\u4e49\u4f60\u81ea\u5df1\u7684\u534f\u8bae\u7c7b\u578b.\u8fd9\u4e9b\u90fd\u662f\u5b8c\u5168\u53ef\u4ee5\u7684.\u56e0\u4e3a\u672c\u8eab\u8fd9\u4e00\u5c42\u5c31\u662f\u63d0\u4f9b\u7ed9\u5f00\u53d1\u4eba\u5458\u81ea\u884c\u53d1\u6325\u7684.\u53ea\u662f\u4e0a\u9762\u5217\u4e3e\u7684\u90fd\u7ecf\u8fc7\u6807\u51c6\u5316\u4e86.<\/p>\n
TCP\u5305\u5934\u7ed3\u6784<\/p>\n
\u6e90\u7aef\u53e3 16\u4f4d<\/p>\n
\u76ee\u6807\u7aef\u53e3 16\u4f4d<\/p>\n
\u5e8f\u5217\u53f7 32\u4f4d<\/p>\n
\u56de\u5e94\u5e8f\u53f7 32\u4f4d<\/p>\n
TCP\u5934\u957f\u5ea6 4\u4f4d<\/p>\n
reserved 6\u4f4d<\/p>\n
\u63a7\u5236\u4ee3\u7801 6\u4f4d<\/p>\n
\u7a97\u53e3\u5927\u5c0f 16\u4f4d<\/p>\n
\u504f\u79fb\u91cf 16\u4f4d<\/p>\n
\u6821\u9a8c\u548c 16\u4f4d<\/p>\n
\u9009\u9879 32\u4f4d(\u53ef\u9009)<\/p>\n
\u8fd9\u6837\u6211\u4eec\u5f97\u51fa\u4e86TCP\u5305\u5934\u7684\u6700\u5c0f\u5927\u5c0f.\u5c31\u662f20\u5b57\u8282.<\/p>\n
UDP\u5305\u5934\u7ed3\u6784<\/p>\n
\u6e90\u7aef\u53e3 16\u4f4d<\/p>\n
\u76ee\u7684\u7aef\u53e3 16\u4f4d<\/p>\n
\u957f\u5ea6 16\u4f4d<\/p>\n
\u6821\u9a8c\u548c 16\u4f4d<\/p>\n
\u6069...UDP\u7684\u5305\u5c0f\u5f88\u591a.\u786e\u5b9e\u5982\u6b64.\u56e0\u4e3aUDP\u662f\u975e\u53ef\u9760\u8fde\u63a5.\u8bbe\u8ba1\u521d\u8877\u5c31\u662f\u5c3d\u53ef\u80fd\u5feb\u7684\u5c06\u6570\u636e\u5305\u53d1\u9001\u51fa\u53bb.\u6240\u4ee5UDP\u534f\u8bae\u663e\u5f97\u975e\u5e38\u7cbe\u7b80.<\/p>\n
\u6709\u4e00\u4e2a\u95ee\u9898,\u4f3c\u4e4e\u8fd9\u4e9b\u5934\u91cc\u9762\u600e\u4e48\u6ca1\u6709IP\u5730\u5740\u554a.\u6ca1\u6709IP\u5730\u5740\u8fd9\u4e9b\u5305\u5f80\u54ea\u91cc\u53d1\u9001\u90a3?<\/p>\n
\u5bf9.\u4f60\u89c2\u5bdf\u7684\u5f88\u4ed4\u7ec6.TCP\u548cUDP\u7684\u5934\u91cc\u9762\u786e\u5b9e\u6ca1\u6709\u4efb\u4f55IP\u4fe1\u606f.\u6211\u4eec\u56de\u5934\u60f3\u4e00\u4e0bTCP\u548cUDP\u662f\u5c5e\u4e8eDoD\u7684\u54ea\u4e00\u5c42\u7684? \u5bf9\u4e86!\u662f\u7b2c3\u5c42. \u800cIP\u5219\u4f4d\u4e8e\u6a21\u578b\u7684\u7b2c\u4e8c\u5c42.\u4e5f\u5c31\u662f\u4ed6\u4eec\u4e24\u8005\u867d\u7136\u6709\u8054\u7cfb.\u4f46\u662f\u4e0d\u5c5e\u4e8e\u540c\u4e00\u5c42.<\/p>\n
\u6a21\u578b\u7684\u4e00\u4e2a\u91cd\u8981\u89c4\u5219\u5c31\u662f.\u5f53\u53d1\u9001\u7aef\u53d1\u9001\u4e00\u4e2a\u6570\u636e,\u4e0a\u4e00\u5c42\u5c06\u6570\u636e\u4f20\u5f80\u4e0b\u4e00\u5c42\u7684\u65f6\u5019.\u4e0a\u4e00\u5c42\u7684\u5305\u5c31\u6210\u4e3a\u4e86\u4e0b\u4e00\u5c42\u5305\u7684\u6570\u636e\u90e8\u5206.<\/p>\n
\u800c\u5230\u63a5\u53d7\u7aef\u63a5\u53d7\u5230\u6570\u636e.\u4e0b\u4e00\u5c42\u5c06\u672c\u5c42\u7684\u5934\u90e8\u4fe1\u606f\u53bb\u6389\u540e\u4ea4\u7ed9\u4e0a\u4e00\u5c42\u53bb\u5904\u7406.<\/p>\n
\u90a3\u4e48\u6211\u4eec\u6765\u770b\u770b\u5b9e\u9645\u4f8b\u5b50:<\/p>\n
\u5047\u4f7f\u6211\u4eec\u901a\u8fc7SMTP\u534f\u8bae\u53d1\u9001\u6570\u636eAAA\u5230\u53e6\u5916\u4e00\u6bb5.\u90a3\u4e48\u6570\u636e\u5148\u4f1a\u88ab\u52a0\u4e0aSMTP\u7684\u5934.\u6210\u4e3a[SMTP]AAA.\u5f80\u4e0b\u53d1\u9001\u5230TCP\u5c42.\u6210\u4e3a[TCP][SMTP]AAA.\u518d\u5f80\u4e0b\u9001\u5230internet\u5c42[IP][TCP][SMTP]AAA.\u7136\u540e\u6210\u4e3a[MAC][IP][TCP][SMTP]AAA<\/p>\n
\u8fd9\u6837\u901a\u8fc7enternet\u6216\u8005FastEnternet\u53d1\u9001\u5230\u8def\u7531\u5668.\u8def\u7531\u5668\u5f97\u5230\u540e\u66ff\u6362\u81ea\u5df1\u7684MAC\u5730\u5740\u4e0a\u53bb.\u4f20\u5230\u4e0b\u4e00\u7ea7\u7684\u8def\u7531\u5668.\u8fd9\u6837\u7ecf\u8fc7\u957f\u9014\u8dcb\u6d89.\u6700\u7ec8\u8fd9\u4e2a\u6570\u636e\u6d41\u5230\u8fbe\u76ee\u6807\u673a.<\/p>\n
\u76ee\u6807\u673a\u5148\u4ece\u4e0b\u9762\u4e00\u5c42\u5f00\u59cb.\u53bb\u6389MAC,\u6210\u4e3a[IP][TCP][SMTP]AAA\u5f80\u4e0a\u5230IP\u5c42,\u6069,\u6bd4\u5bf9\u540e\u662f\u53d1\u9001\u7ed9\u6211\u8fd9\u4e2aIP\u7684.\u53bb\u6389,\u6210\u4e3a[TCP][SMTP]AAA.TCP\u63a5\u5230\u4e86\u67e5\u770b\u6821\u9a8c\u548c,\u6ca1\u9519.\u5f80\u4e0a[SMTP]AAA.\u6700\u540eSMTP\u534f\u8bae\u53bb\u89e3\u91ca.\u5f97\u5230\u4e86AAA.<\/p>\n
\u4e07\u91cc\u957f\u5f81\u7ec8\u4e8e\u7ed3\u675f.\u6211\u4eec\u4e5f\u5c06AAA\u53d1\u9001\u5230\u4e86\u76ee\u6807\u673a.\u5927\u5bb6\u4e5f\u5e94\u8be5\u660e\u767d\u4e86\u4e3a\u4f55TCP\u5305\u5934\u548cUDP\u5305\u5934\u91cc\u9762\u6ca1\u6709IP\u5730\u5740\u90a3?\u56e0\u4e3aIP\u4f4d\u4e8e\u4ed6\u4eec\u4e0b\u9762\u4e00\u5c42.TCP\u548cUDP\u7684\u5305\u5934\u4fe1\u606f\u662f\u4f5c\u4e3aIP\u5305\u7684\u6570\u636e\u6bb5\u6765\u4f20\u9001\u7684.<\/p>\n
IP\u5c42\u53ef\u4e0d\u7ba1\u90a3\u8bb8\u591a.\u4ed6\u53ea\u7ba1\u4ed6\u90a3\u5c42\u7684\u534f\u8bae,\u4e5f\u5c31\u662f\u7ba1\u628a\u4ece\u4e0a\u9762\u5c42\u6765\u7684\u6570\u636e\u52a0\u4e0a\u81ea\u5df1\u7684\u5934,\u4f20\u5230\u4e0b\u9762\u4e00\u5c42.\u628a\u4ece\u4e0b\u9762\u4e00\u5c42\u6765\u7684\u6570\u636e\u53bb\u6389\u5934.\u4f20\u5230\u4e0a\u9762\u4e00\u5c42.<\/p>\n
\u6bcf\u5c42\u90fd\u662f\u8fd9\u4e48\u5e72\u7684.\u5b8c\u7f8e\u7684\u5951\u5408\u5b8c\u6210\u4e86\u6570\u636e\u5305\u7684\u6700\u7ec8\u65c5\u7a0b.<\/p>\n
\u57fa\u7840\u4e09
\n3: MAC.\u6700\u7ec8\u5730\u5740
\n\u5176\u5b9eMAC\u7684\u4e1c\u897f\u4e5f\u8bf4\u4e0d\u597d.\u4e5f\u6ca1\u4ec0\u4e48\u597d\u8bf4\u7684\uff0c\u6211\u4e00\u76f4\u5728\u8003\u8651\u662f\u5426\u9700\u8981\u5b89\u6392,\u4e0d\u8fc7\u65e2\u7136\u8bf42~3\u5c42.\u80af\u5b9a\u8fd8\u662f\u8981\u5199\u7684<\/p>\n
\u9996\u5148.\u6211\u5148\u4ecb\u7ecd\u4e00\u4e2a\u6293\u5305\u8f6f\u4ef6 Ethereal \u6b64\u8f6f\u4ef6\u4e3a\u81ea\u7531\u8f6f\u4ef6.\u5f53\u7136\u7c7b\u4f3c\u7684sniffer\u8f6f\u4ef6\u8fd8\u6709sniffer pro\u7b49\u7b49\uff0c\u4f46\u662f\u4ece\u6548\u7387\u4e0a\u8fd8\u6709\u8f7b\u4fbf\u6027\u6765\u8bf4.Ethereal\u90fd\u6bd4\u540c\u7c7b\u8f6f\u4ef6\u597d\u8bb8\u591a.\u53ef\u4ee5\u901a\u8fc7www.ethereal.com \u6765\u4e0b\u8f7d\u6b64\u8f6f\u4ef6.\u6211\u4eec\u4eca\u540e\u7684\u8bd5\u9a8c\u57fa\u672c\u4e0a\u90fd\u662f\u57fa\u4e8e\u8fd9\u4e2a\u8f6f\u4ef6\u7684.<\/p>\n
\u5b89\u88c5\u4ee5\u540e.\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7capture\u83dc\u5355\u4e0b\u9762\u7684start\u6765\u6293\u5305\u4e86\u4f60\u4f1a\u53d1\u73b0\u5c31\u7b97\u4f60\u6ca1\u6709\u8fdb\u884c\u4efb\u4f55\u7f51\u7edc\u64cd\u4f5c\u7684\u65f6\u5019.\u4e5f\u4f1a\u6709\u8bb8\u591a\u5305\u8fdb\u6765.\u662f\u7684.\u56e0\u4e3a\u7f51\u7edc\u4e0a\u9762\u5145\u6ee1\u5e7f\u64ad.\u4eca\u540e\u6211\u4eec\u8bb2\u5230ARP\u7684\u65f6\u5019\u8fd8\u6709\u5176\u4ed6\u534f\u8bae\u7684\u65f6\u5019\u4f60\u4eec\u5c31\u4f1a\u4e86\u89e3\u5230\u5373\u4f7f\u4f60\u4e0d\u8fdb\u884c\u4efb\u4f55\u64cd\u4f5c.\u6574\u4e2a\u7f51\u7edc\u5185\u4e5f\u4f1a\u5145\u6ee1\u8bb8\u591a\u5e7f\u64ad.<\/p>\n
\u597d\u4e86.MAC\u5730\u5740\u5728\u6211\u4eec\u7b2c\u4e00\u8bb2\u7684\u65f6\u5019\u4ecb\u7ecd\u8fc7.\u4ed6\u662f\u6807\u8bc6\u7f51\u5361\u7684\u552f\u4e00\u5730\u5740\u6240\u6709\u7684\u7f51\u5361\u5728\u6574\u4e2a\u4e16\u754c\u4e0a\u90fd\u6709\u552f\u4e00\u6027\u7684\u4e00\u4e2a\u6807\u8bc6.MAC\u5730\u5740\u662f\u56fa\u5316\u5728\u82af\u7247\u4e2d\u7684.<\/p>\n
\u73b0\u5728\u6211\u4eec\u5728\u6293\u5305\u7684\u72b6\u6001\u4e0bping\u4e00\u4e0b\u5c40\u57df\u7f51\u5185\u7684\u53e6\u4e00\u53f0\u670d\u52a1\u5668<\/p>\n
\u7136\u540e\u505c\u6b62\u6293\u5305<\/p>\n
\u8fd9\u4e2a\u65f6\u5019\u4e3b\u754c\u9762\u4e0a\u5c31\u4f1a\u6709\u8bb8\u591a\u5305\u4e86<\/p>\n
\u627e\u5230Protocol\u4e3aICMP\u7684.<\/p>\n
\u5bf9\u4e86.\u4e00\u4e2a\u662fECHO(ping)request<\/p>\n
\u4e00\u4e2a\u662fECHO(ping)reply<\/p>\n
\u4e00\u4e2a\u662f\u8bf7\u6c42.\u4e00\u4e2a\u662f\u54cd\u5e94<\/p>\n
\u70b9\u51fb\u5176\u4e2d\u4e00\u4e2a\u5305.\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u8be6\u7ec6\u5185\u5bb9,\u5982\u56fe\u4e00<\/p>\n
\u5728\u8f6f\u4ef6\u7684\u7b2c\u4e8c\u680f\u5185\u5c31\u662f\u7ed9\u4f60\u5206\u6790\u597d\u7684\u6570\u636e<\/p>\n
\u7b2c\u4e09\u680f\u5185\u662f\u539f\u59cb\u7684\u6570\u636e\u5305<\/p>\n
\u6211\u4eec\u770b\u7b2c\u4e00\u9879<\/p>\n
FRAME 58<\/p>\n
\u6069.\u8fd9\u91cc\u4e00\u9879\u5c31\u662fFRAME.<\/p>\n
\u5bf9\u4e86.FRAME\u5c31\u662f2\u5c42\u7684\u4e1c\u897f<\/p>\n
\u8fd9\u91cc\u663e\u793a\u7684\u662f\u7edf\u8ba1\u4fe1\u606f<\/p>\n
\u6211\u4eec\u9009\u62e9\u4e86FRAME\u53ef\u4ee5\u770b\u5230\u6700\u540e\u7684\u539f\u59cb\u5305\u91cc\u9762\u6570\u636e\u662f\u5168\u9009\u7684<\/p>\n
\u8bf4\u660eFRAME\u662f\u5305\u7684\u6700\u7ec8\u5f62\u5f0f.<\/p>\n
\u63a5\u7740\u6211\u4eec\u9009\u62e9Ethernet II<\/p>\n
\u53ef\u4ee5\u770b\u5230\u524d14\u4e2a\u5b57\u8282\u88ab\u9009\u4e2d\u4e86<\/p>\n
\u4e5f\u5c31\u662f\u7b2c\u4e8c\u5c42\u5728\u7b2c\u4e09\u5c42\u524d\u9762\u52a0\u4e0a\u7684\u5934\u5c31\u662f\u8fd9\u4e2a14\u4e2a\u5b57\u8282<\/p>\n
\u63a5\u7740\u5f80\u4e0b\u9009\u62e9.<\/p>\n
\u9009\u62e9Destination\u4e00\u9879<\/p>\n
\u8fd9\u9879\u662f\u8bf4\u660e\u5e27\u7684\u76ee\u7684\u5730\u5740<\/p>\n
\u53ef\u4ee5\u770b\u5230\u76f8\u5e94\u7684\u539f\u59cb\u5305\u7684\u5305\u5934\u524d6\u4e2a\u5b57\u8282\u5c31\u662f\u76ee\u7684\u5730\u5740<\/p>\n
\u5bf9\u5e94\u768400:e0:4c:32:3a:0b \u5176\u5b9e\u5c31\u662f\u76ee\u6807\u673a\u5668\u7684\u7f51\u5361\u7684MAC\u5730\u5740\u54df.<\/p>\n
\u518d\u770b\u770bSource\u6e90\u5730\u5740\u9a8c\u8bc1\u4e00\u4e0b<\/p>\n
\u6e90\u5730\u5740\u662f00-20-ED-5C-7D-94<\/p>\n
\u6211\u4eec\u5728\u547d\u4ee4\u6a21\u5f0f\u4e0b\u9762\u4f7f\u7528ipconfig \/all\u547d\u4ee4\u9a8c\u8bc1\u4e00\u4e0b<\/p>\n
Ethernet adapter Local Area Connection:<\/p>\n
Connection-specific DNS Suffix . :<\/p>\n
Description . . . . . . . . . . . : Realtek RTL8139\/810x Family Fast Ethernet NIC<\/p>\n
Physical Address. . . . . . . . . : 00-20-ED-5C-7D-94<\/p>\n
Dhcp Enabled. . . . . . . . . . . : No<\/p>\n
IP Address. . . . . . . . . . . . : 192.168.0.13<\/p>\n
Subnet Mask . . . . . . . . . . . : 255.255.255.0<\/p>\n
Default Gateway . . . . . . . . . : 192.168.0.250<\/p>\n
DNS Servers . . . . . . . . . . . : 202.96.199.133<\/p>\n
202.96.209.5<\/p>\n
Yahoo~\u5b8c\u5168\u543b\u5408.\u6b63\u662f\u4ece\u6211\u4eec\u7f51\u5361\u53d1\u51fa\u7684.<\/p>\n
\u522b\u6025<\/p>\n
\u6700\u540e\u4e0b\u9762\u8fd8\u6709\u4e00\u4e2aType<\/p>\n
\u6211\u4eec\u70b9\u51fb\u4ee5\u540e<\/p>\n
FRAME\u7684\u6700\u540e2\u4e2a\u5b57\u8282\u7528\u6765\u6807\u8bc6\u4e0a\u5c42\u7684\u534f\u8bae\u7c7b\u578b<\/p>\n
\u8fd9\u91ccPING\u5305\u662fIP\u5c42\u7684.<\/p>\n
\u6240\u4ee5Type\u91cc\u9762\u662fIP(0x800)<\/p>\n
\u5982\u679cGOOGLE\u641c\u7d22\u4e00\u4e0b\u67e5\u770bIP\u7684\u7c7b\u578b\u4ee3\u7801\u7684\u8bdd<\/p>\n
\u53ef\u4ee5\u77e5\u9053\u6b63\u662f0x0800(16\u8fdb\u5236)\u54df.<\/p>\n
\u4e0b\u9762\u8fd8\u6709\u597d\u591a\u54e6.<\/p>\n
\u522b\u6025<\/p>\n
\u4e0b\u9762\u5c31\u662fIP\u5c42\u7684\u5185\u5bb9\u4e86.\u6211\u4eec\u4e0b\u6b21\u624d\u4f1a\u8bb2\u89e3\u5230\u7684.<\/p>\n
\u63a5\u4e0b\u6765\u5c31\u662f\u57282\u5c42\u7684\u7f51\u7edc\u91cc\u9762\u7f51\u5361\u5982\u4f55\u76f8\u4e92\u901a\u8baf\u5462?<\/p>\n
\u5728\u6b63\u5e38\u60c5\u51b5\u4e0b<\/p>\n
\u6bcf\u53f0\u673a\u5668\u5e76\u4e0d\u77e5\u9053\u522b\u7684\u673a\u5668\u7684MAC\u5730\u5740<\/p>\n
\u6240\u4ee5\u5728\u6bcf\u6b21\u7684\u5305<\/p>\n
\u90fd\u662f\u4e00\u4e2a\u5355\u64ad\u7fa4\u53d1\u7684\u5305<\/p>\n
\u76ee\u7684MAC\u5730\u5740\u7684\u673a\u5668\u4f1a\u63a5\u53d7<\/p>\n
\u800c\u5176\u4ed6\u4e0d\u662f\u8fd9\u4e2aMAC\u5730\u5740\u7684\u673a\u5668\u4f1a\u4e22\u5f03<\/p>\n
\u8fd9\u6837\u7684\u60c5\u51b5\u5c31\u662f\u7528HUB\u7684\u60c5\u51b5<\/p>\n
\u6240\u4ee5\u5927\u5bb6\u53ef\u4ee5\u60f3\u5230<\/p>\n
\u8fd9\u79cd\u60c5\u51b5\u4e0b\u9762<\/p>\n
1.\u6240\u6709\u7684\u5305\u90fd\u662f\u7fa4\u53d1\u7684.\u975e\u5e38\u6d88\u8017\u5e26\u5bbd,\u662f\u5f88\u6d6a\u8d39\u7684.<\/p>\n
2.\u6240\u6709\u7684\u673a\u5668\u90fd\u53ef\u4ee5\u6536\u5230\u522b\u4eba\u53d1\u7ed9\u53e6\u5916\u4e00\u4e2a\u4eba\u7684\u5305.\u975e\u5e38\u7684\u4e0d\u5b89\u5168<\/p>\n
\u5bf9\u4e8e\u7b2c\u4e8c\u70b9.\u5927\u5bb6\u5c31\u77e5\u9053\u4e3a\u4ec0\u4e48\u6211\u4eec\u5728HUB\u7684\u60c5\u51b5\u4e0b\u9762\u53ef\u4ee5\u6293\u5230\u6240\u6709\u7f51\u7edc\u4e0a\u9762\u901a\u8baf\u7684\u5305\u4e86.<\/p>\n
\u8fd9\u6837\u7684\u60c5\u51b5\u592a\u5dee\u4e86.\u6240\u4ee5\u6709\u4e86\u4ea4\u6362\u673a\u7684\u51fa\u73b0<\/p>\n
\u6211\u4eec\u7b2c\u4e00\u7ae0\u8bf4\u8fc7.\u4ea4\u6362\u673a\u4e00\u662f\u9632\u6b62\"\u51b2\u7a81\"<\/p>\n
\u4e8c\u5c31\u662f\u52a0\u5f3a\u4e86\u6548\u7387\u4e86.<\/p>\n
\u5728\u4ea4\u6362\u673a\u5185.<\/p>\n
\u7ef4\u62a4\u7740\u4e00\u5f20CAM\u8868(Content-Addressable Memory)<\/p>\n
\u8868\u5185\u5c31\u8bb0\u5f55\u7740\u66fe\u7ecf\u901a\u8baf\u8fc7\u7684\u673a\u5668\u7684MAC\u5730\u5740\u548c\u5bf9\u5e94\u7684\u7aef\u53e3<\/p>\n
\u7b2c\u4e00\u6b21\u4ea4\u6362\u673a\u4e0d\u77e5\u9053\u53cc\u65b9\u7684\u4f4d\u7f6e,\u8fd8\u662f\u4f1a\u5355\u64ad\u7fa4\u53d1\u90a3\u4e2a\u5305.<\/p>\n
\u7b2c\u4e8c\u6b21\u76ee\u7684\u65b9\u8fd4\u56de\u5305\u7684\u65f6\u5019,\u4ea4\u6362\u673a\u5c31\u4f1a\u8bb0\u5f55\u7aef\u53e3\u53f7\u548c\u5bf9\u5e94\u7684MAC\u5730\u5740\u4e86<\/p>\n
\u8fd9\u6837\u7684\u60c5\u51b5\u4e0b<\/p>\n
1.\u6240\u6709\u7684\u5305\u4e0d\u662f\u6240\u6709\u7684\u4eba\u90fd\u6536\u5230.\u5e26\u5bbd\u964d\u4f4e<\/p>\n
2.\u522b\u4eba\u65e0\u6cd5\u63a5\u53d7\u5230\u5176\u4ed6\u4eba\u4e4b\u95f4\u7684\u901a\u8baf.\u56e0\u4e3aFRAME\u90fd\u662f\u5728\u56fa\u5b9a\u7684\u7269\u7406\u94fe\u8def\u91cc\u9762\u4f20\u8f93<\/p>\n
\u8fd9\u4e9b\u5927\u5bb6\u77e5\u9053\u4e3a\u4ec0\u4e48\u4ea4\u6362\u7f51\u7edc\u5185sniffer\u662f\u65e0\u6cd5\u751f\u6548\u7684 \u4e86\u5427.<\/p>\n
\u5f53\u7136.\u8fd8\u6709\u7279\u6b8a\u7684\u65b9\u6cd5\u53ef\u4ee5\u8ba9\u4ea4\u6362\u7f51\u7edc\u53ef\u4ee5\u4fa6\u542c\u6240\u6709\u7684\u5305,\u5c31\u662f\u628a\u4ea4\u6362\u673a\u7684\u67d0\u4e2a\u7aef\u53e3\u8bbe\u7f6e\u6210\u4e3a\"\u6df7\u6742\u6a21\u5f0f \".<\/p>\n
\u8fd9\u91cc\u5927\u5bb6\u770b\u5230.\u6570\u636e\u5305\u90fd\u662f\u8ba1\u7b97\u673a\u751f\u6210\u4ee5\u540e\u53d1\u9001\u51fa\u53bb\u7684<\/p>\n
\u6240\u4ee5\u53ef\u4ee5\u4efb\u610f\u4fee\u6539\u91cc\u9762\u7684\u5185\u5bb9,\u53ea\u8981\u7b26\u5408\u89c4\u8303\u5c31\u884c.<\/p>\n
\u5927\u5bb6\u4e00\u822c\u6240\u77e5\u7684\u4fee\u6539MAC\u5730\u5740\u4e5f\u5c31\u662f\u5c06\u5305\u5185\u7684MAC\u5730\u5740\u8fdb\u884c\u66ff\u6362,\u8f6f\u6027\u7684\u4fee\u6539.<\/p>\n
\u800c\u7f51\u5361\u7684MAC\u5730\u5740\u5219\u662f\u56fa\u5316\u7684,\u65e0\u6cd5\u4fee\u6539\u7684.<\/p>\n
\u4e5f\u6b63\u662f\u7531\u4e8e\u6570\u636e\u5305\u7684\u8fd9\u79cd\u53ef\u7be1\u6539\u6027.\u5bfc\u81f4\u4e86\u6211\u4eec\u5b9e\u9645\u4e2d\u7684TCP\/IP\u5e76\u4e0d\u5b89\u5168.<\/p>\n","protected":false},"excerpt":{"rendered":"
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