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\u4fdd\u969c\u7a33\u5b9a\u6027\uff1a<\/strong>\u7535\u5b50\u90ae\u4ef6\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u81f3\u5173\u91cd\u8981\uff0c\u8fd0\u7ef4\u4eba\u5458\u5e94\u505a\u5230\u4fdd\u8bc1\u7535\u5b50\u90ae\u4ef6\u7cfb\u7edf\u7684\u7a33\u5b9a\u8fd0\u884c\uff0c\u5e76\u53ca\u65f6\u505a\u597d\u9632\u8303\u5206\u5e03\u5f0f\u62d2\u7edd\u670d\u52a1\uff08Distributed Denial of Service\uff0cDDoS\uff09\u653b\u51fb\u7684\u51c6\u5907\u3002<\/p>\n \u5907\u4efd\u548c\u6062\u590d\u673a\u5236\uff1a<\/strong>\u5b9a\u671f\u5bf9\u90ae\u4ef6\u670d\u52a1\u5668\u7684\u6570\u636e\u8fdb\u884c\u5907\u4efd\uff0c\u4ee5\u9632\u6b62\u6570\u636e\u4e22\u5931\uff0c\u5e76\u5236\u5b9a\u8be6\u7ec6\u7684\u707e\u96be\u6062\u590d\u8ba1\u5212\u3002<\/p>\n \u7528\u6237\u8eab\u4efd\u9a8c\u8bc1\u548c\u8bbf\u95ee\u63a7\u5236\uff1a<\/strong>\u8981\u6c42\u7528\u6237\u8bbe\u7f6e\u5f3a\u5bc6\u7801\uff0c\u5e76\u5b9a\u671f\u66f4\u6362\u5bc6\u7801\uff0c\u9632\u6b62\u672a\u6388\u6743\u8bbf\u95ee\u3002<\/p>\n \u65e5\u5fd7\u548c\u76d1\u63a7\uff1a<\/strong>\u8bb0\u5f55\u8be6\u7ec6\u7684\u7cfb\u7edf\u8fd0\u884c\u65e5\u5fd7\uff0c\u5305\u62ec\u90ae\u4ef6\u53d1\u9001\u3001\u63a5\u6536\u548c\u9519\u8bef\u4fe1\u606f\uff0c\u4fbf\u4e8e\u540e\u7eed\u5ba1\u8ba1\u548c\u95ee\u9898\u6392\u67e5\u3002<\/p>\n \u5b9a\u671f\u66f4\u65b0\u548c\u5b89\u5168\u8865\u4e01\uff1a<\/strong>\u5b9a\u671f\u66f4\u65b0\u90ae\u4ef6\u670d\u52a1\u5668\u8f6f\u4ef6\uff0c\u786e\u4fdd\u4f7f\u7528\u6700\u65b0\u7248\u672c\uff0c\u4fee\u8865\u5df2\u77e5\u7684\u5b89\u5168\u6f0f\u6d1e\u3002<\/p>\n \u9632\u6b62\u90ae\u4ef6\u6ee5\u7528\uff1a<\/strong>\u9632\u6b62\u90ae\u4ef6\u6ee5\u7528\u548c\u5783\u573e\u90ae\u4ef6\u6cdb\u6ee5\uff0c\u8bbe\u7f6e\u90ae\u4ef6\u53d1\u9001\u548c\u63a5\u6536\u9650\u989d\uff0c\u9632\u6b62\u7cfb\u7edf\u8d44\u6e90\u88ab\u6ee5\u7528\u3002<\/p>\n \u6269\u5c55\u6027\u548c\u8d1f\u8f7d\u5747\u8861\uff1a<\/strong>\u8bbe\u8ba1\u90ae\u4ef6\u7cfb\u7edf\u65f6\u8003\u8651\u5176\u6269\u5c55\u6027\uff0c\u4ee5\u4fbf\u5728\u7528\u6237\u6570\u91cf\u589e\u52a0\u65f6\u80fd\u591f\u5e73\u6ed1\u6269\u5c55\u3002<\/p><\/blockquote>\n 15.2 \u90e8\u7f72\u57fa\u7840\u7684\u7535\u5b50\u90ae\u4ef6\u7cfb\u7edf<\/strong><\/span><\/p>\n \u4e00\u4e2a\u6700\u57fa\u7840\u7684\u7535\u5b50\u90ae\u4ef6\u7cfb\u7edf\u80af\u5b9a\u8981\u80fd\u63d0\u4f9b\u53d1\u4ef6\u670d\u52a1\u548c\u6536\u4ef6\u670d\u52a1\u3002\u4e3a\u6b64\uff0c\u9700\u8981\u4f7f\u7528\u57fa\u4e8eSMTP\u7684Postfix\u670d\u52a1\u7a0b\u5e8f\u63d0\u4f9b\u53d1\u4ef6\u670d\u52a1\u529f\u80fd\uff0c\u5e76\u4f7f\u7528\u57fa\u4e8ePOP3\u534f\u8bae\u7684Dovecot\u670d\u52a1\u7a0b\u5e8f\u63d0\u4f9b\u6536\u4ef6\u670d\u52a1\u529f\u80fd\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u7528\u6237\u5c31\u53ef\u4ee5\u4f7f\u7528Outlook Express\u6216Foxmail\u7b49\u5ba2\u6237\u7aef\u670d\u52a1\u7a0b\u5e8f\u6b63\u5e38\u6536\u53d1\u90ae\u4ef6\u4e86\u3002\u7535\u5b50\u90ae\u4ef6\u7cfb\u7edf\u7684\u5de5\u4f5c\u6d41\u7a0b\u5982\u56fe15-2\u6240\u793a\u3002<\/p>\n <\/p>\n \u56fe15-2\u00a0 \u7535\u5b50\u90ae\u4ef6\u7cfb\u7edf\u7684\u5de5\u4f5c\u6d41\u7a0b<\/p>\n \u5728\u8bf8\u591a\u65e9\u671f\u7684Linux\u7cfb\u7edf\u4e2d\uff0c\u9ed8\u8ba4\u4f7f\u7528\u7684\u53d1\u4ef6\u670d\u52a1\u662f\u7531Sendmail\u670d\u52a1\u7a0b\u5e8f\u63d0\u4f9b\u7684\uff0c\u800c\u5728RHEL 10\u7cfb\u7edf\u4e2d\uff0c\u5df2\u7ecf\u66ff\u6362\u4e3aPostfix\u670d\u52a1\u7a0b\u5e8f\u3002\u4e0eSendmail\u76f8\u6bd4\uff0cPostfix\u51cf\u5c11\u4e86\u5f88\u591a\u4e0d\u5fc5\u8981\u7684\u914d\u7f6e\u6b65\u9aa4\uff0c\u5e76\u4e14\u5728\u7a33\u5b9a\u6027\u548c\u5e76\u53d1\u6027\u65b9\u9762\u4e5f\u6709\u663e\u8457\u6539\u8fdb\u3002<\/p>\n \u4e00\u822c\u800c\u8a00\uff0c\u6211\u4eec\u7684\u4fe1\u7bb1\u5730\u5740\u7c7b\u4f3c\u4e8eroot@lrxjmw.cn\u8fd9\u6837\uff0c\u4e5f\u5c31\u662f\u6309\u7167\u201c\u7528\u6237\u540d@\u4e3b\u673a\u5730\u5740\uff08\u57df\u540d\uff09\u201d\u683c\u5f0f\u6765\u89c4\u8303\u7684\u3002\u5982\u679c\u60a8\u6765\u4e00\u4e32\u201croot@192.168.10.10\u201d\u7684\u4fe1\u606f\uff0c\u6211\u53ef\u80fd\u731c\u4e0d\u5230\u8fd9\u662f\u4e00\u4e2a\u90ae\u7bb1\u5730\u5740\uff0c\u751a\u81f3\u53ef\u80fd\u8bef\u8ba4\u4e3a\u662fSSH\u534f\u8bae\u7684\u8fde\u63a5\u4fe1\u606f\u3002\u56e0\u6b64\uff0c\u8981\u60f3\u66f4\u597d\u5730\u68c0\u9a8c\u7535\u5b50\u90ae\u4ef6\u7cfb\u7edf\u7684\u914d\u7f6e\u6548\u679c\uff0c\u9700\u8981\u5148\u90e8\u7f72bind\u670d\u52a1\u7a0b\u5e8f\uff0c\u4e3a\u7535\u5b50\u90ae\u4ef6\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u63d0\u4f9bDNS\u57df\u540d\u89e3\u6790\u670d\u52a1\u3002<\/p>\n \u7b2c1\u6b65<\/strong>\uff1a\u914d\u7f6e\u670d\u52a1\u5668\u4e3b\u673a\u540d\u79f0\uff0c\u9700\u8981\u4fdd\u8bc1\u670d\u52a1\u5668\u4e3b\u673a\u540d\u79f0\u4e0e\u53d1\u4fe1\u57df\u540d\u4fdd\u6301\u4e00\u81f4\u3002<\/p>\n15.1 \u7535\u5b50\u90ae\u4ef6\u7cfb\u7edf<\/span><\/strong><\/h5>\n
[root@linuxprobe ~]# vim \/etc\/hostname\r\nmail.lrxjmw.cn\r\n[root@linuxprobe ~]# hostname\r\nmail.lrxjmw.cn\r\n<\/pre>\n