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{"id":12367,"date":"2024-03-19T08:45:55","date_gmt":"2024-03-19T00:45:55","guid":{"rendered":"https:\/\/www.simcentric.com\/?p=12367"},"modified":"2024-03-20T11:48:39","modified_gmt":"2024-03-20T03:48:39","slug":"security-risks-of-free-servers-how-to-identify-website-threats","status":"publish","type":"post","link":"https:\/\/www.simcentric.com\/sc\/hong-kong-dedicated-server-sc\/security-risks-of-free-servers-how-to-identify-website-threats\/","title":{"rendered":"\u514d\u8d39\u670d\u52a1\u5668\u7684\u5b89\u5168\u9690\u60a3,\u5982\u4f55\u8bc6\u522b\u7f51\u7ad9\u5371\u673a?"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row el_class=&#8221;blog-detail-section&#8221;][vc_column][vc_column_text]\u642d\u5efa\u7f51\u7ad9\u662f\u8bb8\u591a\u4f01\u4e1a\u548c\u4e2a\u4eba\u7684\u521a\u9700,\u4f46\u9762\u5bf9\u6602\u8d35\u7684\u670d\u52a1\u5668\u8d39\u7528,<a 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href=\"https:\/\/www.simcentric.com\/sc\/\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\u63d0\u4f9b\u5546\u901a\u5e38\u4ee5\u4f4e\u4ef7\u751a\u81f3\u514d\u8d39\u5438\u5f15\u7528\u6237,\u4f46\u4ed6\u4eec\u7684\u670d\u52a1\u8d28\u91cf\u548c\u5b89\u5168\u6027\u5f80\u5f80\u96be\u4ee5\u4fdd\u8bc1\u3002\u8fd9\u4e9b\u9690\u60a3\u5305\u62ec:<\/p>\n<ol>\n<li>\u670d\u52a1\u5668\u914d\u7f6e\u4f4e,\u5b89\u5168\u9632\u62a4\u80fd\u529b\u5f31,\u6613\u53d7\u653b\u51fb<\/li>\n<li>\u8fd0\u7ef4\u4e0d\u4e13\u4e1a,\u7cfb\u7edf\u8865\u4e01\u66f4\u65b0\u4e0d\u53ca\u65f6,\u5b58\u5728\u5df2\u77e5\u6f0f\u6d1e<\/li>\n<li>\u6076\u610f\u7a0b\u5e8f\u6a2a\u884c,\u670d\u52a1\u5668\u6ca6\u4e3a\u50f5\u5c38\u7f51\u7edc,\u9ed1\u5ba2\u8df3\u677f<\/li>\n<li>\u76d1\u7ba1\u4e0d\u529b,\u7528\u6237\u4fe1\u606f\u6cc4\u9732,\u6570\u636e\u88ab\u975e\u6cd5\u5229\u7528<\/li>\n<\/ol>\n<p>\u4e00\u65e6\u7f51\u7ad9\u90e8\u7f72\u5728\u8fd9\u4e9b\u95ee\u9898\u670d\u52a1\u5668\u4e0a,\u968f\u65f6\u9762\u4e34\u7740\u88ab\u5165\u4fb5,\u7be1\u6539,\u7a83\u53d6\u6570\u636e\u7b49\u98ce\u9669\u3002\u8f7b\u5219\u7f51\u7ad9\u762b\u75ea,\u91cd\u5219\u6570\u636e\u6cc4\u9732,\u5546\u4e1a\u673a\u5bc6\u5916\u6d41,\u7ecf\u6d4e\u635f\u5931\u96be\u4ee5\u4f30\u91cf\u3002[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=&#8221;blog-detail-section&#8221;][vc_column][vc_column_text]<\/p>\n<h2><strong>\u5982\u4f55\u8bc6\u522b\u7f51\u7ad9\u5b89\u5168\u5371\u673a:\u9632\u60a3\u4e8e\u672a\u7136<\/strong><\/h2>\n<p>\u9762\u5bf9\u514d\u8d39\u670d\u52a1\u5668\u7684\u5b89\u5168\u9690\u60a3,\u6211\u4eec\u8981\u63d0\u9ad8\u8b66\u60d5,\u5b66\u4f1a\u4e3b\u52a8\u8bc6\u522b\u7f51\u7ad9\u9762\u4e34\u7684\u5371\u673a\u3002\u4e00\u65e6\u53d1\u73b0\u5f02\u5e38,\u53ca\u65f6\u91c7\u53d6\u5e94\u5bf9\u63aa\u65bd,\u5c06\u635f\u5931\u964d\u5230\u6700\u4f4e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5b9e\u7528\u7684\u5371\u673a\u8bc6\u522b\u6280\u5de7:<\/p>\n<h3><strong>1. \u68c0\u67e5\u7cfb\u7edf\u65e5\u5fd7,\u53ca\u65f6\u53d1\u73b0\u53ef\u7591\u884c\u4e3a<\/strong><\/h3>\n<p>\u670d\u52a1\u5668\u548c\u5e94\u7528\u7684\u7cfb\u7edf\u65e5\u5fd7\u8bb0\u5f55\u4e86\u7528\u6237\u7684\u8bbf\u95ee\u884c\u4e3a\u548c\u7cfb\u7edf\u4e8b\u4ef6,\u662f\u5b89\u5168\u76d1\u63a7\u7684\u91cd\u8981\u6570\u636e\u6e90\u3002\u8981\u517b\u6210\u5b9a\u671f\u68c0\u67e5\u65e5\u5fd7\u7684\u4e60\u60ef,\u91cd\u70b9\u5173\u6ce8\u4ee5\u4e0b\u53ef\u7591\u884c\u4e3a:<\/p>\n<ul>\n<li>\u66b4\u529b\u7834\u89e3\u767b\u5f55,\u5bc6\u7801\u731c\u6d4b\u7b49\u5f02\u5e38\u767b\u5f55\u884c\u4e3a<\/li>\n<li>\u4fee\u6539\u7cfb\u7edf\u5173\u952e\u6587\u4ef6\u5982\/etc\/passwd\u7684\u64cd\u4f5c\u8bb0\u5f55<\/li>\n<li>\u5927\u91cf\u8bbf\u95ee\u654f\u611f\u76ee\u5f55\u5982\/admin,\/backup\u7684\u8bf7\u6c42<\/li>\n<li>\u5305\u542bSQL\u6ce8\u5165,XSS\u7b49\u7279\u5f81\u7684\u6076\u610f\u8bf7\u6c42<\/li>\n<\/ul>\n<p>\u4f7f\u7528grep,awk\u7b49Linux\u547d\u4ee4\u53ef\u4ee5\u65b9\u4fbf\u5730\u8fc7\u6ee4\u548c\u5206\u6790\u65e5\u5fd7:<\/p>\n<pre><code>$ grep 'Failed password' \/var\/log\/secure  \/\/ \u68c0\u67e5SSH\u66b4\u529b\u7834\u89e3\r\n$ awk '$9 == 404 {print $7}' access.log | sort | uniq -c | sort -nr  \/\/ \u7edf\u8ba1\u8bbf\u95ee\u5931\u8d25\u7684URL<\/code><\/pre>\n<h3><strong>2. \u8bbe\u7f6e\u5165\u4fb5\u68c0\u6d4b,\u5b9e\u65f6\u544a\u8b66\u5f02\u5e38\u4e8b\u4ef6<\/strong><\/h3>\n<p>\u53ca\u65f6\u53d1\u73b0\u5165\u4fb5\u884c\u4e3a\u662f\u63a7\u5236\u635f\u5931\u7684\u5173\u952e\u3002\u5efa\u8bae\u5728\u670d\u52a1\u5668\u4e0a\u90e8\u7f72\u5f00\u6e90\u6216\u5546\u4e1a\u7684\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf(IDS),\u5b9e\u65f6\u76d1\u63a7\u7f51\u7edc\u6d41\u91cf\u548c\u7cfb\u7edf\u884c\u4e3a,\u8bc6\u522b\u53ef\u7591\u6d3b\u52a8\u3002\u5e38\u7528\u7684\u5f00\u6e90IDS\u5982Snort,OSSEC\u7b49,\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u68c0\u6d4b\u89c4\u5219\u5e93\u548c\u544a\u8b66\u673a\u5236\u3002\u4e00\u65e6\u53d1\u73b0\u5165\u4fb5\u4f01\u56fe,IDS\u4f1a\u7acb\u5373\u544a\u8b66,\u5e76\u63d0\u4f9b\u8be6\u7ec6\u7684\u4e8b\u4ef6\u5206\u6790,\u4fbf\u4e8e\u53ca\u65f6\u5904\u7f6e\u3002<\/p>\n<p>\u4f8b\u5982,Snort\u7684\u544a\u8b66\u65e5\u5fd7\u5305\u542b\u4e8b\u4ef6\u7684\u4e25\u91cd\u7b49\u7ea7,\u653b\u51fb\u7279\u5f81,\u6e90\u76ee\u7684IP\u7b49\u5173\u952e\u4fe1\u606f:<\/p>\n<pre><code>[**] [1:1070:6] WEB-IIS view source via translate header [**]\r\n[Priority: 3] \r\n11\/11-16:20:33.952094 10.1.1.2:49872 -&gt; 10.1.1.10:80\r\nTCP TTL:64 TOS:0x0 ID:18715 IpLen:20 DgmLen:508 DF\r\n***AP*** Seq: 0xE48A974C  Ack: 0xB0C7578A  Win: 0xFAF6  TcpLen: 32\r\nTCP Options (3) =&gt; NOP NOP TS: 3882932 46529032 <\/code><\/pre>\n<h3><strong>3. \u5b9a\u671f\u6f0f\u6d1e\u626b\u63cf,\u4fee\u590d\u9ad8\u5371\u5b89\u5168\u9690\u60a3<\/strong><\/h3>\n<p>\u7f51\u7ad9\u7684\u5b89\u5168\u6027\u5f88\u5927\u7a0b\u5ea6\u53d6\u51b3\u4e8e\u6240\u7528\u8f6f\u4ef6\u7684\u6f0f\u6d1e\u4fee\u590d\u60c5\u51b5\u3002\u8981\u575a\u6301\u5b9a\u671f\u5bf9Web\u670d\u52a1\u5668,\u5e94\u7528\u7a0b\u5e8f,\u6570\u636e\u5e93\u7b49\u8fdb\u884c\u6f0f\u6d1e\u626b\u63cf,\u53d1\u73b0\u5e76\u53ca\u65f6\u4fee\u590d\u9ad8\u5371\u6f0f\u6d1e\u3002\u53ef\u4ee5\u4f7f\u7528Nessus, OpenVAS\u7b49\u4e13\u4e1a\u7684\u6f0f\u6d1e\u626b\u63cf\u5de5\u5177,\u5b83\u4eec\u62e5\u6709\u5e7f\u6cdb\u7684\u7cfb\u7edf\u63d2\u4ef6\u548c\u6f0f\u6d1e\u7279\u5f81\u5e93,\u80fd\u591f\u5168\u9762\u53d1\u73b0\u5e38\u89c1\u7684\u5b89\u5168\u9690\u60a3\u3002<\/p>\n<p>\u626b\u63cf\u53d1\u73b0\u6f0f\u6d1e\u540e,\u8981\u7b2c\u4e00\u65f6\u95f4\u5230\u5b98\u65b9\u6e20\u9053\u83b7\u53d6\u5b89\u5168\u8865\u4e01,\u5e76\u505a\u597d\u8865\u4e01\u6d4b\u8bd5\u548c\u5907\u4efd,\u518d\u5e94\u7528\u5230\u751f\u4ea7\u7cfb\u7edf\u3002\u5343\u4e07\u4e0d\u8981\u62d6\u5ef6,\u7f51\u7ad9\u6f0f\u6d1e\u662f\u9ed1\u5ba2\u7684\u7a81\u7834\u53e3,\u5fc5\u987b\u4e88\u4ee5\u9ad8\u5ea6\u91cd\u89c6\u3002<\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=&#8221;blog-detail-section&#8221;][vc_column][vc_column_text]<\/p>\n<h2><strong>\u5c0f\u7ed3:\u7f51\u7ad9\u5b89\u5168,\u8b66\u949f\u957f\u9e23<\/strong><\/h2>\n<p>\u514d\u8d39\u9999\u6e2f\u670d\u52a1\u5668\u4e3a\u4f01\u4e1a\u548c\u4e2a\u4eba\u63d0\u4f9b\u4e86\u4f4e\u6210\u672c\u642d\u5efa\u7f51\u7ad9\u7684\u9014\u5f84,\u4f46\u4e5f\u5e26\u6765\u4e86\u6f5c\u5728\u7684\u5b89\u5168\u9690\u60a3\u3002\u4f5c\u4e3a\u7f51\u7ad9\u7684\u7ba1\u7406\u8005,\u6211\u4eec\u5fc5\u987b\u8b66\u60d5\u8fd9\u4e9b\u98ce\u9669,\u5b66\u4f1a\u4e3b\u52a8\u8bc6\u522b\u5371\u673a,\u5c31\u5982\u8fd9\u6b21\u8bf4\u7684\u514d\u8d39\u670d\u52a1\u5668\u3002\u901a\u8fc7\u65e5\u5fd7\u5206\u6790,\u5165\u4fb5\u68c0\u6d4b,\u6f0f\u6d1e\u626b\u63cf\u7b49\u624b\u6bb5,\u53ca\u65f6\u53d1\u73b0\u53ef\u7591\u884c\u4e3a\u548c\u5b89\u5168\u6f0f\u6d1e,\u518d\u91c7\u53d6\u9488\u5bf9\u6027\u7684\u9632\u62a4\u63aa\u65bd\u3002\u4e00\u65e6\u5371\u673a\u6765\u4e34,\u53ca\u65f6\u6b62\u635f,\u51cf\u5c11\u7f51\u7ad9\u7684\u4e0d\u5229\u5f71\u54cd\u3002<\/p>\n<p>\u7f51\u7ad9\u5b89\u5168\u6ca1\u6709\u7ec8\u70b9,\u9700\u8981\u6301\u7eed\u4e0d\u65ad\u7684\u76d1\u63a7,\u5206\u6790,\u6539\u8fdb\u3002\u8ba9\u6211\u4eec\u4ee5\u5de5\u7a0b\u5e08\u7684\u4e25\u8c28,\u4ee5\u6781\u5ba2\u7684\u597d\u5947,\u65f6\u523b\u4fdd\u6301\u8b66\u60d5,\u4e3a\u7f51\u7ad9\u7b51\u8d77\u4e00\u9053\u575a\u5b9e\u7684\u5b89\u5168\u9632\u7ebf\u3002\u552f\u6709\u5982\u6b64,\u6211\u4eec\u624d\u80fd\u5728\u6fc0\u70c8\u7684\u4e92\u8054\u7f51\u7ade\u4e89\u4e2d\u7acb\u4e8e\u4e0d\u8d25\u4e4b\u5730,\u5b9e\u73b0\u7f51\u7ad9\u7684\u957f\u6cbb\u4e45\u5b89\u3002[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row 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