\u4f3a\u670d\u5668\u66f4\u63db IP \u5f8c\u820a IP \u4ecd\u53ef\u5b58\u53d6\uff0c\u6700\u5e38\u898b\u7684\u5143\u5147\u5c31\u662f DNS\u3002\u6bcf\u500b\u7db2\u57df\u540d\u7a31\u90fd\u4f9d\u8cf4 DNS \u8a18\u9304\u628a\u6d41\u91cf\u5c0e\u5411\u6b63\u78ba\u7684\u4f3a\u670d\u5668\u3002\u9019\u4e9b\u8a18\u9304\u90fd\u6703\u5e36\u6709\u4e00\u500b TTL\uff08Time To Live\uff0c\u5b58\u6d3b\u6642\u9593\uff09\u503c\u3002TTL \u544a\u8a34\u89e3\u6790\u5668\uff0c\u5728\u5411\u6b0a\u5a01 DNS \u4f3a\u670d\u5668\u91cd\u65b0\u67e5\u8a62\u4e4b\u524d\uff0c\u9019\u7b46\u56de\u61c9\u53ef\u4ee5\u88ab\u5feb\u53d6\u591a\u4e45\u3002\u6bd4\u5982\uff0c\u4e00\u7b46 TTL \u70ba 3600 \u79d2\u7684\u8a18\u9304\uff0c\u5c31\u8868\u793a\u89e3\u6790\u5668\u6700\u591a\u6703\u628a\u9019\u500b\u5feb\u53d6 IP \u63d0\u4f9b\u7d66\u7528\u6236\u7aef\u4f7f\u7528\u4e00\u5c0f\u6642\u3002\u5728\u9019\u4e00\u5c0f\u6642\u5167\uff0c\u5373\u4f7f\u6b0a\u5a01\u4f3a\u670d\u5668\u4e0a\u7684\u8a18\u9304\u5df2\u7d93\u8b8a\u66f4\uff0c\u6301\u6709\u820a\u503c\u7684\u7528\u6236\u7aef\u4e5f\u4e0d\u6703\u770b\u5230\u8b8a\u5316\u3002DNS \u6c92\u6709\u300c\u4e3b\u52d5\u63a8\u9001\u300d\u6a5f\u5236\uff0c\u53ea\u6709\u7b49\u5feb\u53d6\u904e\u671f\u5f8c\uff0c\u820a\u8a18\u9304\u624d\u6703\u88ab\u6e05\u9664\u3002\u9019\u5c31\u662f\u4eba\u5011\u5e38\u8aaa\u7684\u300cDNS \u50b3\u64ad\u300d\u3002<\/p>\n

DNS \u50b3\u64ad\uff1a\u7531\u65bc\u5404\u7d1a\u905e\u8ff4\u89e3\u6790\u5668\u5feb\u53d6\u4e86\u67e5\u8a62\u7d50\u679c\uff0c\u8b8a\u66f4\u53ef\u80fd\u9700\u8981\u6578\u5206\u9418\u5230\u8a31\u591a\u5c0f\u6642\u624d\u80fd\u5b8c\u5168\u751f\u6548\u3002\u5373\u4f7f\u4f60\u5df2\u7d93\u56de\u6efe\u6216\u4fee\u5fa9\u8a2d\u5b9a\uff0c\u5feb\u53d6\u7d50\u679c\u4e5f\u53ef\u80fd\u4ecd\u7136\u6301\u7e8c\u5b58\u5728\u3002<\/p><\/blockquote>\n

\u700f\u89bd\u5668\u548c\u4f5c\u696d\u7cfb\u7d71\u5c64\u7d1a\u7684 DNS \u5feb\u53d6<\/h3>\n

\u4f60\u7684\u700f\u89bd\u5668\u6703\u5728\u672c\u6a5f\u5feb\u53d6 DNS \u67e5\u8a62\u7d50\u679c\u3002Chrome\u3001Firefox \u548c Edge \u90fd\u5404\u81ea\u7dad\u8b77\u81ea\u5df1\u7684\u5feb\u53d6\u3002\u4f60\u7684\u4f5c\u696d\u7cfb\u7d71\u4e5f\u6703\u7dad\u8b77\u4e00\u500b\u7368\u7acb\u7684\u89e3\u6790\u5668\u5feb\u53d6\u3002\u9019\u4e9b\u5c64\u7d1a\u80fd\u5920\u63d0\u5347\u5b58\u53d6\u901f\u5ea6\uff0c\u4f46\u5728\u9077\u79fb\u4e4b\u5f8c\uff0c\u4e5f\u6703\u628a\u820a IP \u4f4d\u5740\u300c\u56f0\u300d\u5728\u672c\u6a5f\u3002<\/p>\n

\u4f60\u53ef\u4ee5\u4f7f\u7528\u4f5c\u696d\u7cfb\u7d71\u63d0\u4f9b\u7684 DNS \u5feb\u53d6\u6e05\u7406\u5de5\u5177\u4f86\u5237\u65b0\u9019\u4e9b\u5feb\u53d6\uff0c\u9019\u6a23\u53ef\u4ee5\u7acb\u5373\u6e05\u7a7a\u672c\u6a5f\u89e3\u6790\u5668\u5feb\u53d6\u3002\u4f60\u4e5f\u61c9\u8a72\u91cd\u65b0\u555f\u52d5\u700f\u89bd\u5668\uff0c\u4ee5\u6e05\u9664\u700f\u89bd\u5668\u5167\u90e8\u5feb\u53d6\u3002\u8acb\u5fb9\u5e95\u95dc\u9589\u6240\u6709\u700f\u89bd\u5668\u8996\u7a97\uff0c\u7136\u5f8c\u91cd\u65b0\u958b\u555f\u700f\u89bd\u5668\uff0c\u518d\u5617\u8a66\u5b58\u53d6\u65b0\u7684 IP\u3002<\/p>\n

\u8def\u7531\u5668\u548c ISP \u7684\u905e\u8ff4\u89e3\u6790\u5668<\/h3>\n

\u4f60\u7684\u5bb6\u7528\u8def\u7531\u5668\u901a\u5e38\u6703\u5145\u7576 DNS \u8f49\u9001\u5668\u3002\u5b83\u6703\u70ba\u7db2\u8def\u4e2d\u7684\u6240\u6709\u88dd\u7f6e\u5feb\u53d6 DNS \u56de\u61c9\uff0c\u9019\u500b\u5feb\u53d6\u53ef\u80fd\u6703\u628a\u820a IP \u4fdd\u7559\u6578\u5c0f\u6642\u751a\u81f3\u6578\u5929\u3002\u4f60\u53ef\u4ee5\u900f\u904e\u7c21\u55ae\u7684\u65b7\u96fb\u91cd\u555f\u4f86\u6e05\u9664\u5b83\u3002<\/p>\n

\n
1. \u62d4\u6389\u8def\u7531\u5668\u96fb\u6e90\u7dda\u3002<\/li>\n
2. \u7b49\u5f85 30 \u79d2\u3002<\/li>\n
3. \u91cd\u65b0\u63d2\u4e0a\u96fb\u6e90\u3002<\/li>\n
4. \u7b49\u5f85\u5176\u5b8c\u5168\u555f\u52d5\uff082-3 \u5206\u9418\uff09\u3002<\/li>\n<\/ol>\n

   \u4f60\u4e5f\u53ef\u4ee5\u900f\u904e\u7ba1\u7406\u9762\u677f\u4f86\u64cd\u4f5c\u3002\u958b\u555f\u700f\u89bd\u5668\u4e26\u5b58\u53d6\u8def\u7531\u5668\u7684 IP \u4f4d\u5740\uff0c\u4f7f\u7528\u7ba1\u7406\u54e1\u5e33\u865f\u767b\u5165\uff0c\u627e\u5230 DHCP\u3001\u7db2\u8def\u6216 DNS \u8a2d\u5b9a\u3002\u5c0b\u627e\u985e\u4f3c Release\/Renew\u3001Clear DNS Cache \u6216 Restart DNS \u7684\u9078\u9805\uff0c\u7136\u5f8c\u5957\u7528\u8b8a\u66f4\u3002<\/p>\n

   \u9664\u4e86\u4f60\u7684\u8def\u7531\u5668\u4e4b\u5916\uff0c\u7db2\u969b\u7db2\u8def\u670d\u52d9\u4f9b\u61c9\u5546\uff08ISP\uff09\u4e5f\u904b\u884c\u8457\u905e\u8ff4\u89e3\u6790\u5668\u3002\u9019\u4e9b\u4f3a\u670d\u5668\u6703\u70ba\u6210\u5343\u4e0a\u842c\u7684\u4f7f\u7528\u8005\u5feb\u53d6 DNS \u8a18\u9304\u3002\u4f60\u7121\u6cd5\u81ea\u884c\u6e05\u9664\u9019\u4e9b\u5feb\u53d6\uff0c\u53ea\u80fd\u7b49\u5f85 TTL \u81ea\u7136\u904e\u671f\u3002\u820a\u8a18\u9304\u4e0a\u8a2d\u5b9a\u4e86\u8f03\u9577\u7684 TTL\uff0c\u6b63\u662f\u5f88\u591a\u4eba\u89ba\u5f97 DNS \u50b3\u64ad\u53ef\u80fd\u9700\u8981 48 \u5c0f\u6642\u7684\u539f\u56e0\u3002<\/p>\n

   \u9019\u500b\u554f\u984c\u5176\u5be6\u53ef\u4ee5\u5728\u9077\u79fb\u524d\u9810\u5148\u63a7\u5236\u3002\u63d0\u524d\u5e7e\u5929\u628a TTL \u964d\u4f4e\uff0c\u7b49\u5f85\u820a TTL \u5728\u5404\u8655\u90fd\u904e\u671f\u4e4b\u5f8c\uff0c\u518d\u9032\u884c IP \u8b8a\u66f4\u3002\u9019\u6a23\u5feb\u53d6\u5c31\u80fd\u5728\u5e7e\u5206\u9418\u5167\u5237\u65b0\u5b8c\u6210\u3002\u4e4b\u5f8c\u518d\u628a TTL \u8abf\u9ad8\uff0c\u4ee5\u6e1b\u5c11 DNS \u67e5\u8a62\u8ca0\u8f09\u3002\u9019\u500b\u7b56\u7565\u80fd\u6709\u6548\u907f\u514d\u5728\u6574\u6279\u4f7f\u7528\u8005\u4e2d\u90fd\u51fa\u73fe\u300c\u820a IP \u4ecd\u7136\u53ef\u5b58\u53d6\u300d\u7684\u60f1\u4eba\u60c5\u6cc1\u3002<\/p>\n

   \u5373\u4f7f\u4f3a\u670d\u5668\u79df\u7528\u672c\u8eab\u904b\u884c\u6b63\u5e38\uff0cDNS \u554f\u984c\u4ecd\u53ef\u80fd\u4e2d\u65b7\u4f60\u7684\u7db2\u7ad9\u670d\u52d9\u3002\u4e00\u7b46\u8a2d\u5b9a\u932f\u8aa4\u7684\u8a18\u9304\u5c31\u53ef\u80fd\u5c0e\u81f4\u9577\u6642\u9593\u505c\u6a5f\u548c\u5168\u7403\u7bc4\u570d\u7684\u5b58\u53d6\u5931\u6557\u3002\u6301\u7e8c\u76e3\u63a7 DNS \u50b3\u64ad\u60c5\u6cc1\u8207 TTL \u8a2d\u5b9a\uff0c\u6709\u52a9\u65bc\u4f60\u53ca\u65e9\u767c\u73fe\u554f\u984c\u3002<\/p>\n

   \u7db2\u8def\u5c64\u5feb\u53d6\uff1aARP \u548c DHCP \u79df\u7d04<\/strong><\/h2>\n

   DNS \u4e26\u4e0d\u662f\u552f\u4e00\u6703\u8a18\u4f4f\u820a\u4f4d\u5740\u7684\u5c64\u3002\u4f60\u7684\u672c\u6a5f\u7db2\u8def\u4e5f\u6703\u4fdd\u5b58\u904e\u6642\u7684\u5c0d\u61c9\u8cc7\u8a0a\u3002\u4e3b\u8981\u6709\u5169\u7a2e\u6a5f\u5236\u6703\u5c0e\u81f4\u9019\u7a2e\u60c5\u6cc1\uff1aARP \u5feb\u53d6\u548c DHCP \u79df\u7d04\u3002\u5373\u4f7f\u4f60\u5df2\u7d93\u66f4\u6539\u4e86\u4f3a\u670d\u5668\u4f4d\u5740\uff0c\u5b83\u5011\u4ecd\u53ef\u80fd\u8b93\u820a IP \u5b58\u53d6\u7e7c\u7e8c\u5b58\u5728\u5f88\u9577\u6642\u9593\u3002<\/p>\n

   ARP \u5feb\u53d6\u9805\u76ee\u8207\u975c\u614b\u5c0d\u61c9<\/h3>\n

   \u4f4d\u5740\u89e3\u6790\u5354\u5b9a\uff08ARP\uff09\u7528\u65bc\u5c07 IP \u4f4d\u5740\u5c0d\u61c9\u5230\u5be6\u9ad4 MAC \u4f4d\u5740\u3002\u7db2\u8def\u4e2d\u7684\u6bcf\u53f0\u88dd\u7f6e\u90fd\u6703\u7dad\u8b77\u4e00\u500b ARP \u5feb\u53d6\u3002\u9019\u500b\u5feb\u53d6\u6703\u544a\u8a34\u8def\u7531\u5668\uff0c\u5c0d\u65bc\u67d0\u500b IP \u4f4d\u5740\uff0c\u8cc7\u6599\u5c01\u5305\u61c9\u8a72\u50b3\u9001\u7d66\u54ea\u4e00\u584a\u786c\u9ad4\u3002\u7576\u4f60\u66f4\u63db\u4f3a\u670d\u5668 IP \u6642\uff0c\u820a\u7684 ARP \u9805\u76ee\u53ef\u80fd\u4ecd\u7136\u6307\u5411\u820a\u786c\u9ad4\uff0c\u5c0e\u81f4\u6d41\u91cf\u7e7c\u7e8c\u767c\u5f80\u932f\u8aa4\u7684\u76ee\u6a19\u3002<\/p>\n

   \u4f60\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e9b\u7c21\u55ae\u547d\u4ee4\u4f86\u67e5\u770b ARP \u5feb\u53d6\u3002\u4e0b\u8868\u5217\u51fa\u4e86\u6700\u5e38\u7528\u7684\u5e7e\u500b\uff1a<\/p>\n

   \n\n\n\n\n<\/colgroup>\n\n\n\n\n\n

   \u547d\u4ee4<\/th>\n	\u7528\u9014<\/th>\n	\u7bc4\u4f8b<\/th>\n<\/tr>\n
   arp -a<\/code><\/td>\n	\u67e5\u770b\u6240\u6709 ARP \u5feb\u53d6\u9805\u76ee<\/td>\n	arp -a<\/code><\/td>\n<\/tr>\n
   arp -d <ip><\/code><\/td>\n	\u522a\u9664\u6307\u5b9a\u7684 ARP \u9805\u76ee<\/td>\n	arp -d 192.168.1.100<\/code><\/td>\n<\/tr>\n
   sudo ip neigh flush all<\/code><\/td>\n	\u6e05\u7a7a\u6574\u500b ARP \u5feb\u53d6\uff08Linux\uff09<\/td>\n	sudo ip neigh flush all<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n \u975c\u614b ARP \u9805\u76ee\u6703\u9020\u6210\u6700\u9811\u56fa\u7684\u554f\u984c\u3002\u975c\u614b\u5c0d\u61c9\u6703\u8986\u84cb\u52d5\u614b\u66f4\u65b0\uff0c\u5373\u4f7f\u4f3a\u670d\u5668\u5df2\u7d93\u9077\u79fb\uff0c\u8def\u7531\u5668\u4ecd\u6703\u7e7c\u7e8c\u4f7f\u7528\u820a\u7684 MAC \u4f4d\u5740\u3002\u4f60\u5fc5\u9808\u624b\u52d5\u522a\u9664\u9019\u4e9b\u9805\u76ee\uff0c\u7136\u5f8c\u8b93\u8def\u7531\u5668\u91cd\u65b0\u52d5\u614b\u5efa\u7acb\u9130\u63a5\u95dc\u4fc2\uff0c\u624d\u80fd\u6062\u5fa9\u6b63\u78ba\u8f49\u9001\u3002<\/p>\n DHCP \u79df\u7d04\u885d\u7a81\u8207\u9673\u820a\u5206\u914d<\/h3>\n DHCP \u900f\u904e\u300c\u79df\u7d04\u300d\u6a5f\u5236\u5206\u914d IP \u4f4d\u5740\u3002\u6bcf\u500b\u79df\u7d04\u90fd\u5e36\u6709\u79df\u671f\u3001\u958b\u59cb\u6642\u9593\u3001\u7d50\u675f\u6642\u9593\u4ee5\u53ca\u7528\u6236\u7aef\u7684 MAC \u4f4d\u5740\u3002DHCP \u4f3a\u670d\u5668\u6703\u628a\u9019\u4e9b\u8cc7\u8a0a\u4fdd\u5b58\u5728\u79df\u7d04\u8cc7\u6599\u5eab\u4e2d\u3002\u5728 Linux \u4e0a\uff0c\u4f60\u901a\u5e38\u53ef\u4ee5\u5728 \/var\/lib\/dhcp\/dhcpd.leases<\/code> \u627e\u5230\u5b83\u3002<\/p>\n \u79df\u7d04\u7e8c\u79df\u904e\u7a0b\u672c\u8eab\u4e5f\u53ef\u80fd\u8b93\u820a\u4f4d\u5740\u6eef\u7559\u3002\u7576\u4f3a\u670d\u5668\u767c\u73fe\u4e00\u500b\u6b63\u5728\u7e8c\u79df\u7684\u4f4d\u5740\u73fe\u5728\u5df2\u7d93\u5c6c\u65bc\u53e6\u4e00\u53f0\u4e3b\u6a5f\u6642\uff0c\u5b83\u6703\u50b3\u9001 DHCPNAK \u8a0a\u606f\u3002\u7136\u800c\uff0c\u5b83\u6703\u6545\u610f\u4fdd\u7559\u73fe\u6709\u79df\u7d04\u3002\u9019\u662f\u70ba\u4e86\u9632\u6b62\u5c01\u5305\u907a\u5931\u5e36\u4f86\u554f\u984c\u3002\u5982\u679c\u5728\u4e0d\u7a69\u5b9a\u7db2\u8def\u4e2d DHCPNAK \u907a\u5931\uff0c\u7528\u6236\u7aef\u6703\u91cd\u65b0\u50b3\u9001\u8acb\u6c42\uff0c\u800c\u4f3a\u670d\u5668\u4ecd\u9700\u8981\u4fdd\u7559\u9019\u4efd\u79df\u7d04\u4ee5\u8655\u7406\u90a3\u6b21\u91cd\u50b3\u3002\u53ea\u6709\u7576\u7528\u6236\u7aef\u771f\u6b63\u6536\u5230 DHCPNAK \u4e26\u91cd\u65b0\u767c\u8d77\u65b0\u7684\u63a2\u7d22\u6d41\u7a0b\u5f8c\uff0c\u4f3a\u670d\u5668\u624d\u6703\u522a\u9664\u820a\u79df\u7d04\u3002<\/p>\n \u6b63\u56e0\u70ba\u6709\u9019\u500b\u5b89\u5168\u6a5f\u5236\uff0c\u820a IP \u5b58\u53d6\u53ef\u80fd\u6703\u5728\u7e8c\u79df\u4ea4\u63e1\u904e\u7a0b\u4e2d\u7e7c\u7e8c\u5b58\u5728\u3002\u4f60\u53ef\u4ee5\u5728\u9077\u79fb\u524d\u624b\u52d5\u91cb\u653e\u79df\u7d04\u4f86\u52a0\u5feb\u8655\u7406\u3002\u5728\u7528\u6236\u7aef\u4e0a\uff0c\u5148\u91cb\u653e\u76ee\u524d\u79df\u7d04\uff0c\u518d\u4f7f\u7528\u4f5c\u696d\u7cfb\u7d71\u7684 DHCP \u7528\u6236\u7aef\u5de5\u5177\u91cd\u65b0\u7533\u8acb\u65b0\u79df\u7d04\u3002\u9019\u6a23\u53ef\u4ee5\u5f37\u5236\u5b8c\u6210\u4e00\u6b21\u4e7e\u6de8\u7684\u5207\u63db\uff0c\u907f\u514d\u820a\u4f4d\u5740\u7e7c\u7e8c\u6eef\u7559\u5728 DHCP \u8cc7\u6599\u5eab\u4e2d\u3002<\/p>\n \u672c\u6a5f Hosts \u6a94\u6848\u8207\u6301\u4e45\u9023\u7dda<\/strong><\/h2>\n \u4f60\u7684\u96fb\u8166\u4e0a\u9084\u6709\u53e6\u4e00\u5c64\u4f4d\u5740\u8cc7\u8a0a\uff0c\u800c\u4e14\u5b83\u6703\u5b8c\u5168\u7e5e\u904e DNS\u3002Hosts \u6a94\u6848\u53ef\u4ee5\u628a\u7db2\u57df\u540d\u7a31\u76f4\u63a5\u5c0d\u61c9\u5230 IP \u4f4d\u5740\u3002\u8a72\u6a94\u6848\u4f4d\u65bc\u7cfb\u7d71\u8a2d\u5b9a\u76ee\u9304\u4e2d\uff1b\u5728 Linux \u548c macOS \u4e0a\u901a\u5e38\u662f \/etc\/hosts<\/code>\uff0c\u800c\u5728 Windows \u4e0a\u5247\u4f4d\u65bc\u7cfb\u7d71\u76ee\u9304\u4e0b\u3002\u9019\u500b\u6a94\u6848\u7684\u512a\u5148\u9806\u5e8f\u9ad8\u65bc DNS \u89e3\u6790\uff0c\u7cfb\u7d71\u6703\u5148\u6aa2\u67e5\u5b83\uff0c\u518d\u53bb\u67e5\u8a62\u4efb\u4f55 DNS \u4f3a\u670d\u5668\u3002\u9019\u500b\u89e3\u6790\u9806\u5e8f\u4f86\u81ea nsswitch.conf<\/code> \u6a94\u6848\uff0c\u901a\u5e38\u8a2d\u5b9a\u70ba hosts: file dns<\/code>\uff0c\u610f\u601d\u5c31\u662f\uff1a\u53ea\u8981 Hosts \u6a94\u6848\u88e1\u6709\u8a18\u9304\uff0c\u5b83\u5c31\u59cb\u7d42\u512a\u5148\u751f\u6548\u3002<\/p>\n Hosts \u6a94\u6848\u4e2d\u7684\u9673\u820a\u9805\u76ee<\/h3>\n \u9019\u500b\u6a94\u6848\u88e1\u54ea\u6015\u53ea\u6709\u4e00\u884c\u904e\u6642\u8a18\u9304\uff0c\u4e5f\u6703\u8b93\u9077\u79fb\u5b8c\u6210\u4e4b\u5f8c\u820a IP 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\u8b8a\u66f4\u4e4b\u5f8c\u4ecd\u6709\u53ef\u80fd\u7e7c\u7e8c\u5b58\u6d3b\u3002TCP \u5de5\u4f5c\u968e\u6bb5\u53ef\u4ee5\u900f\u904e Keep-Alive \u6a5f\u5236\u4fdd\u6301\u958b\u555f\u72c0\u614b\uff0c\u5373\u4fbf\u66ab\u6642\u6c92\u6709\u8cc7\u6599\u50b3\u8f38\uff0c\u9019\u4e9b\u9031\u671f\u6027\u63a2\u6e2c\u4e5f\u6703\u7dad\u6301\u9023\u7dda\u3002\u4f8b\u5982\uff0c\u4e00\u500b\u5728\u9077\u79fb\u524d\u5efa\u7acb\u7684 SSH \u5de5\u4f5c\u968e\u6bb5\u6216\u8cc7\u6599\u5eab\u9023\u7dda\uff0c\u53ef\u80fd\u4ecd\u7136\u5728\u4f7f\u7528\u820a\u4f4d\u5740\u3002<\/p>\n \u4f60\u53ef\u4ee5\u4f7f\u7528\u4f5c\u696d\u7cfb\u7d71\u63d0\u4f9b\u7684\u7db2\u8def\u9023\u7dda\u76e3\u63a7\u5de5\u5177\u4f86\u8b58\u5225\u9019\u4e9b\u6b98\u7559\u9023\u7dda\u3002\u67e5\u627e\u6240\u6709\u5230\u820a IP \u4f4d\u5740\u7684\u5df2\u5efa\u7acb\u9023\u7dda\uff0c\u4e26\u8a18\u4e0b\u5c0d\u61c9\u7684\u884c\u7a0b ID\u3002\u7136\u5f8c\u7d42\u6b62\u9019\u4e9b\u884c\u7a0b\uff0c\u6216\u8005\u91cd\u65b0\u555f\u52d5\u64c1\u6709\u9019\u4e9b\u9023\u7dda\u7684\u670d\u52d9\u3002\u9019\u6a23\u5c31\u80fd\u5f37\u5236\u65b0\u9023\u7dda\u6539\u7528\u66f4\u65b0\u5f8c\u7684\u4f4d\u5740\u3002<\/p>\n \u91cd\u65b0\u555f\u52d5\u61c9\u7528\u7a0b\u5f0f\u901a\u5e38\u662f\u6700\u4e7e\u6de8\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u505c\u6b62\u670d\u52d9\u3001\u95dc\u9589\u7528\u6236\u7aef\uff0c\u7136\u5f8c\u91cd\u65b0\u555f\u52d5\u5168\u90e8\u5143\u4ef6\u3002\u65b0\u7684\u9023\u7dda\u6703\u91cd\u65b0\u67e5\u8a62 DNS \u548c\u8def\u7531\u8868\uff0c\u5f9e\u800c\u6b63\u78ba\u4f7f\u7528\u65b0\u7684 IP\uff0c\u4e0d\u518d\u6df7\u6dc6\u3002<\/p>\n \u4f3a\u670d\u5668\u7aef\u8a2d\u5b9a\u8207 IP \u885d\u7a81<\/strong><\/h2>\n \u4f3a\u670d\u5668\u81ea\u8eab\u7684\u8a2d\u5b9a\u6a94\u88e1\uff0c\u4e5f\u53ef\u80fd\u4ecd\u7136\u4fdd\u7559\u8457\u820a\u4f4d\u5740\u3002\u50cf Apache \u548c Nginx \u9019\u6a23\u7684 Web \u4f3a\u670d\u5668\u6703\u4f7f\u7528\u865b\u64ec\u4e3b\u6a5f\u8a2d\u5b9a\u5340\u584a\u4f86\u8def\u7531\u8acb\u6c42\uff0c\u800c\u9019\u4e9b\u8a2d\u5b9a\u5340\u584a\u4e2d\u53ef\u80fd\u5305\u542b\u6307\u5b9a\u76e3\u807d IP \u7684\u6307\u4ee4\u3002\u5982\u679c\u4f60\u5df2\u7d93\u4fee\u6539\u4e86\u4f3a\u670d\u5668 IP\uff0c\u4f46\u9019\u4e9b\u8a2d\u5b9a\u6c92\u6709\u540c\u6b65\u66f4\u65b0\uff0c\u90a3\u9ebc\u4f3a\u670d\u5668\u4ecd\u53ef\u80fd\u7e7c\u7e8c\u5728\u820a\u4f4d\u5740\u4e0a\u63a5\u53d7\u6d41\u91cf\u3002\u8cc7\u6599\u5eab\u9023\u7dda\u5b57\u4e32\u4e5f\u6703\u5e36\u4f86\u985e\u4f3c\u554f\u984c\u3002\u61c9\u7528\u7a0b\u5f0f\u6703\u628a\u9019\u4e9b\u5b57\u4e32\u5132\u5b58\u5728\u8a2d\u5b9a\u6a94\u4e2d\uff0c\u800c PHP \u6216 Python \u6a94\u6848\u4e2d\u786c\u7de8\u78bc\u7684\u820a IP\uff0c\u6703\u628a\u6240\u6709\u67e5\u8a62\u7e7c\u7e8c\u9001\u5f80\u932f\u8aa4\u4e3b\u6a5f\u3002<\/p>\n \u9077\u79fb\u4e4b\u5f8c\uff0c\u4f60\u5fc5\u9808\u5168\u9762\u5be9\u67e5\u9019\u4e9b\u6a94\u6848\u3002\u5728\u6574\u53f0\u4f3a\u670d\u5668\u4e0a\u641c\u5c0b\u820a IP\uff0c\u4f7f\u7528\u6587\u5b57\u641c\u5c0b\u5de5\u5177\u627e\u51fa\u6bcf\u4e00\u8655\u53c3\u7167\uff0c\u4e26\u628a\u6240\u6709\u51fa\u73fe\u4f4d\u7f6e\u90fd\u66f4\u65b0\u70ba\u65b0\u4f4d\u5740\u3002\u4e4b\u5f8c\u91cd\u65b0\u555f\u52d5 Web \u4f3a\u670d\u5668\u548c\u8cc7\u6599\u5eab\u670d\u52d9\uff0c\u78ba\u4fdd\u6240\u6709\u5143\u4ef6\u90fd\u7e6b\u7d50\u5230\u6b63\u78ba\u7684\u4ecb\u9762\u4e0a\u3002<\/p>\n \u865b\u64ec\u4e3b\u6a5f\u8207\u670d\u52d9\u7e6b\u7d50<\/h3>\n Web \u4f3a\u670d\u5668\u8a2d\u5b9a\u6a94\uff0c\u4f8b\u5982 Apache \u6216 Nginx \u7684\u8a2d\u5b9a\uff0c\u53ef\u80fd\u5305\u542b\u6307\u5b9a IP \u4f4d\u5740\u7684\u865b\u64ec\u4e3b\u6a5f\u5b9a\u7fa9\u3002\u82e5\u67d0\u689d\u6307\u4ee4\u4ecd\u7136\u5beb\u8457\u820a IP\uff0c\u4f3a\u670d\u5668\u5c31\u53ef\u80fd\u7121\u6cd5\u5728\u65b0\u4f4d\u5740\u4e0a\u63a5\u53d7\u9023\u7dda\u3002\u4f60\u5fc5\u9808\u7de8\u8f2f\u9019\u4e9b\u6307\u4ee4\uff0c\u4e26\u5c07\u820a IP \u66ff\u63db\u70ba\u65b0 IP\u3002<\/p>\n \u670d\u52d9\u7e6b\u7d50\u554f\u984c\u4e26\u4e0d\u53ea\u9650\u65bc Web \u4f3a\u670d\u5668\u3002\u4f60\u9084\u61c9\u6aa2\u67e5 SSH\u3001MySQL \u4ee5\u53ca\u5176\u4ed6\u670d\u52d9\u7684\u8a2d\u5b9a\u6a94\u4e2d\u662f\u5426\u5b58\u5728\u8207 IP \u7e6b\u7d50\u76f8\u95dc\u7684\u8a2d\u5b9a\uff0c\u4e26\u9010\u4e00\u66f4\u65b0\u3002<\/p>\n IP \u4f4d\u5740\u885d\u7a81\u8207\u9077\u79fb\u5de5\u5177\u907a\u7559\u9805\u76ee<\/h3>\n \u7576\u540c\u4e00\u7db2\u8def\u4e2d\u7684\u5169\u53f0\u88dd\u7f6e\u4f7f\u7528\u76f8\u540c\u4f4d\u5740\u6642\uff0c\u5c31\u6703\u767c\u751f IP \u885d\u7a81\u3002\u5982\u679c\u53e6\u4e00\u53f0\u6a5f\u5668\u5df2\u7d93\u5360\u7528\u4e86\u4f60\u7684\u65b0 IP\uff0c\u4f3a\u670d\u5668\u5c31\u53ef\u80fd\u7121\u6cd5\u7e6b\u7d50\u5230\u8a72\u4f4d\u5740\u3002\u4f5c\u696d\u7cfb\u7d71\u6703\u56de\u5831\u932f\u8aa4\uff0c\u800c\u670d\u52d9\u5247\u53ef\u80fd\u56de\u9000\u5230\u820a IP \u4e0a\u76e3\u807d\u3002\u9019\u7a2e\u60c5\u6cc1\u6703\u8b93\u66f4\u63db IP \u5f8c\u820a IP \u5b58\u53d6\u4ecd\u7136\u6301\u7e8c\u3002\u9077\u79fb\u524d\u61c9\u5148\u78ba\u8a8d\u65b0 IP \u6c92\u6709\u88ab\u5360\u7528\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528 arp<\/code> \u6aa2\u67e5\u662f\u5426\u5df2\u6709\u88dd\u7f6e\u5c0d\u8a72\u4f4d\u5740\u4f5c\u51fa\u56de\u61c9\u3002<\/p>\n \u6709\u4e9b\u9077\u79fb\u5de5\u5177\u6703\u81ea\u52d5\u66f4\u65b0\u5927\u91cf\u8a2d\u5b9a\uff0c\u4f46\u5b83\u5011\u901a\u5e38\u7121\u6cd5\u8986\u84cb\u6240\u6709\u53c3\u7167\u3002\u81ea\u8a02\u8a2d\u5b9a\u3001cron \u5de5\u4f5c\u4ee5\u53ca\u61c9\u7528\u7a0b\u5f0f\u8a2d\u5b9a\u4e2d\uff0c\u53ef\u80fd\u4ecd\u7136\u4fdd\u7559\u820a 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