# \u5217\u51fa\u6309CPU\u4f7f\u7528\u7387\u6392\u5e8f\u7684\u8fdb\u7a0b\r\nps aux --sort=-%cpu | head -n 10<\/code><\/pre>\n<\/li>\n
\u6587\u4ef6\u5b8c\u6574\u6027\u76d1\u63a7\uff1a<\/strong>\n
# \u4f7f\u7528AIDE\u68c0\u67e5\u6587\u4ef6\u53d8\u66f4\r\naide --check<\/code><\/pre>\n<\/li>\n<\/ol>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u9884\u9632\uff1a\u52a0\u5f3a\u60a8\u7684\u9999\u6e2f\u670d\u52a1\u5668<\/strong><\/h2>\n
\u4fdd\u62a4\u60a8\u7684\u670d\u52a1\u5668\u79df\u7528\u57fa\u7840\u8bbe\u65bd\u514d\u53d7\u52a0\u5bc6\u52ab\u6301\u9700\u8981\u591a\u5c42\u6b21\u7684\u65b9\u6cd5\u3002\u5b9e\u65bd\u4ee5\u4e0b\u6280\u672f\u63aa\u65bd\u6765\u589e\u5f3a\u670d\u52a1\u5668\u7684\u5f39\u6027\uff1a<\/p>\n
\n
\u5b9e\u65bd\u5185\u5bb9\u5b89\u5168\u7b56\u7565\uff08CSP\uff09\u5934\uff1a<\/strong>\n
# \u5c06\u6b64\u6dfb\u52a0\u5230\u60a8\u7684Web\u670d\u52a1\u5668\u914d\u7f6e\u4e2d\r\nContent-Security-Policy: script-src 'self' https:\/\/trusted-cdn.com;<\/code><\/pre>\n<\/li>\n
\u4f7f\u7528ModSecurity Web\u5e94\u7528\u9632\u706b\u5899\uff08WAF\uff09\uff1a<\/strong>\n
# \u5728Apache\u4e2d\u542f\u7528ModSecurity\r\nLoadModule security2_module modules\/mod_security2.so\r\nSecRuleEngine On<\/code><\/pre>\n<\/li>\n
\u5b9e\u65bd\u7f51\u7edc\u5206\u6bb5\uff1a<\/strong>\n
# \u521b\u5efaVLAN\u4ee5\u9694\u79bb\u654f\u611f\u7cfb\u7edf\r\nvlan 100\r\n name SENSITIVE_SYSTEMS\r\n!\r\ninterface GigabitEthernet1\/0\/1\r\n switchport access vlan 100\r\n switchport mode access<\/code><\/pre>\n<\/li>\n
\u5b9a\u671f\u6f0f\u6d1e\u626b\u63cf\uff1a<\/strong>\n
# \u4f7f\u7528OpenVAS\u8fdb\u884c\u6f0f\u6d1e\u626b\u63cf\r\nomp -u admin -w password -h localhost -p 9390 -iX \"<create_task><name>Weekly Scan<\/name><config id='daba56c8-73ec-11df-a475-002264764cea'\/><target id='33d0cd82-57c6-11e1-8ed1-406186ea4fc5'\/><\/create_task>\"<\/code><\/pre>\n<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u9999\u6e2f\u7279\u6709\u8003\u8651\u56e0\u7d20<\/strong><\/h2>\n
\u5728\u4fdd\u62a4\u9999\u6e2f\u670d\u52a1\u5668\u514d\u53d7\u52a0\u5bc6\u52ab\u6301\u65f6,\u8bf7\u8003\u8651\u4ee5\u4e0b\u5730\u533a\u7279\u5b9a\u56e0\u7d20\uff1a<\/p>\n
\n
\u9075\u5b88\u9999\u6e2f\u7684\u7f51\u7edc\u5b89\u5168\u6307\u5357<\/li>\n
\u9009\u62e9HKCERT\u8ba4\u8bc1\u7684\u6570\u636e\u4e2d\u5fc3<\/li>\n
\u5b9e\u65bd\u4e0e\u9999\u6e2f\u6807\u51c6\u65f6\u95f4\uff08HKT\uff09\u540c\u6b65\u7684\u5b9e\u65f6\u76d1\u63a7<\/li>\n
\u54a8\u8be2\u719f\u6089\u9999\u6e2f\u5a01\u80c1\u73af\u5883\u7684\u672c\u5730\u7f51\u7edc\u5b89\u5168\u4e13\u5bb6<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u4e8b\u4ef6\u54cd\u5e94\uff1a\u5f53\u52a0\u5bc6\u52ab\u6301\u8005\u6765\u88ad<\/strong><\/h2>\n
\u5982\u679c\u60a8\u6000\u7591\u9999\u6e2f\u670d\u52a1\u5668\u5df2\u88ab\u52a0\u5bc6\u52ab\u6301\u8005\u5165\u4fb5,\u8bf7\u9075\u5faa\u4ee5\u4e0b\u4e8b\u4ef6\u54cd\u5e94\u8ba1\u5212\uff1a<\/p>\n
\n
\u9694\u79bb\u53d7\u5f71\u54cd\u7684\u7cfb\u7edf\uff1a<\/strong>\n
# \u65ad\u5f00\u88ab\u5165\u4fb5\u670d\u52a1\u5668\u4e0e\u7f51\u7edc\u7684\u8fde\u63a5\r\nifconfig eth0 down<\/code><\/pre>\n<\/li>\n
\u6355\u83b7\u53d6\u8bc1\u636e\u636e\uff1a<\/strong>\n
# \u521b\u5efa\u78c1\u76d8\u6620\u50cf\u4ee5\u4f9b\u5206\u6790\r\ndd if=\/dev\/sda of=\/path\/to\/image.dd bs=4M<\/code><\/pre>\n<\/li>\n
\u5206\u6790\u65e5\u5fd7\u548c\u8fdb\u7a0b\uff1a<\/strong>\n
# \u5728\u7cfb\u7edf\u65e5\u5fd7\u4e2d\u641c\u7d22\u53ef\u7591\u6761\u76ee\r\ngrep -r \"suspicious_keyword\" \/var\/log\/*<\/code><\/pre>\n<\/li>\n
\u5220\u9664\u6076\u610f\u7ec4\u4ef6\uff1a<\/strong>\n
# \u5220\u9664\u53ef\u7591\u7684cron\u4f5c\u4e1a\r\ncrontab -r\r\n# \u5220\u9664\u672a\u6388\u6743\u7684\u7528\u6237\u8d26\u6237\r\nuserdel suspicious_user<\/code><\/pre>\n<\/li>\n
\u4fee\u8865\u6f0f\u6d1e\u5e76\u66f4\u65b0\u7cfb\u7edf<\/strong><\/li>\n
\u4ece\u5e72\u51c0\u7684\u5907\u4efd\u6062\u590d\uff1a<\/strong>\n
# \u4ece\u5df2\u77e5\u7684\u5e72\u51c0\u5907\u4efd\u6062\u590d\u7cfb\u7edf\r\nrsync -avz --delete \/backup\/clean_system\/ \/<\/code><\/pre>\n<\/li>\n
\u5b9e\u65bd\u989d\u5916\u7684\u5b89\u5168\u63aa\u65bd<\/strong><\/li>\n
\u76d1\u63a7\u91cd\u65b0\u611f\u67d3\u5c1d\u8bd5<\/strong><\/li>\n<\/ol>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u7ed3\u8bba\uff1a\u9886\u5148\u4e8e\u52a0\u5bc6\u52ab\u6301\u8005<\/strong><\/h2>\n
\u968f\u7740\u9999\u6e2f\u7ee7\u7eed\u6210\u4e3a\u5173\u952e\u7684\u670d\u52a1\u5668\u79df\u7528\u67a2\u7ebd,\u4fdd\u62a4\u60a8\u7684\u670d\u52a1\u5668\u514d\u53d7\u52a0\u5bc6\u52ab\u6301\u81f3\u5173\u91cd\u8981\u3002\u901a\u8fc7\u5b9e\u65bd\u5f3a\u5927\u7684\u68c0\u6d4b\u673a\u5236\u3001\u9884\u9632\u63aa\u65bd\u548c\u5236\u5b9a\u575a\u5b9e\u7684\u4e8b\u4ef6\u54cd\u5e94\u8ba1\u5212,\u60a8\u53ef\u4ee5\u663e\u8457\u964d\u4f4e\u6210\u4e3a\u8fd9\u4e9b\u9690\u853d\u653b\u51fb\u53d7\u5bb3\u8005\u7684\u98ce\u9669\u3002\u4fdd\u6301\u8b66\u60d5,\u53ca\u65f6\u66f4\u65b0\u7cfb\u7edf,\u5e76\u5229\u7528\u9999\u6e2f\u7f51\u7edc\u5b89\u5168\u751f\u6001\u7cfb\u7edf\u7684\u72ec\u7279\u4f18\u52bf\u6765\u7ef4\u62a4\u5b89\u5168\u7684\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u3002<\/p>\n
\u8bf7\u8bb0\u4f4f,\u4e0e\u52a0\u5bc6\u52ab\u6301\u7684\u6597\u4e89\u662f\u6301\u7eed\u8fdb\u884c\u7684\u3002\u4e0d\u65ad\u5b66\u4e60\u65b0\u51fa\u73b0\u7684\u5a01\u80c1,\u4e0e\u9999\u6e2f\u670d\u52a1\u5668\u79df\u7528\u793e\u533a\u7684\u5176\u4ed6\u4e13\u4e1a\u4eba\u58eb\u5408\u4f5c,\u5e76\u8c03\u6574\u60a8\u7684\u5b89\u5168\u7b56\u7565,\u4ee5\u59cb\u7ec8\u9886\u5148\u4e8e\u52a0\u5bc6\u52ab\u6301\u8005\u3002\u8fd9\u6837\u505a\u4e0d\u4ec5\u53ef\u4ee5\u4fdd\u62a4\u60a8\u81ea\u5df1\u7684\u57fa\u7840\u8bbe\u65bd,\u8fd8\u53ef\u4ee5\u4e3a\u9999\u6e2f\u6570\u5b57\u73af\u5883\u7684\u6574\u4f53\u5b89\u5168\u6001\u52bf\u505a\u51fa\u8d21\u732e\u3002<\/p>\n
[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"
[vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] \u5728\u4e0d\u65ad\u6f14\u53d8\u7684\u7f51\u7edc\u5b89\u5168\u5a01\u80c1\u73af\u5883\u4e2d\uff0c\u52a0\u5bc6\u52ab\u6301\u5df2\u6210\u4e3a\u670d\u52a1\u5668\u7ba1\u7406\u5458\u9762\u4e34\u7684\u4e00\u4e2a\u91cd\u5927\u6311\u6218,\u7279\u522b\u662f\u90a3\u4e9b\u7ba1\u7406\u9999\u6e2f\u670d\u52a1\u5668\u79df\u7528\u57fa\u7840\u8bbe\u65bd\u7684\u7ba1\u7406\u5458\u3002\u8fd9\u79cd\u9690\u853d\u7684\u653b\u51fb\u65b9\u5f0f\u53ef\u80fd\u4f1a\u5728\u4e0d\u7559\u660e\u663e\u75d5\u8ff9\u7684\u60c5\u51b5\u4e0b\u635f\u5bb3\u60a8\u670d\u52a1\u5668\u7684\u6027\u80fd\u548c\u5b89\u5168\u3002\u8ba9\u6211\u4eec\u6df1\u5165\u4e86\u89e3\u52a0\u5bc6\u52ab\u6301\u7684\u4e16\u754c,\u5e76\u63a2\u8ba8\u5982\u4f55\u4fdd\u62a4\u60a8\u7684\u9999\u6e2f\u670d\u52a1\u5668\u514d\u53d7\u8fd9\u79cd\u6f5c\u5728\u5a01\u80c1\u3002 [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] \u63ed\u79d8\u52a0\u5bc6\u52ab\u6301\uff1a\u65e0\u58f0\u7684\u5bc4\u751f\u866b \u52a0\u5bc6\u52ab\u6301\u662f\u4e00\u79cd\u6076\u610f\u884c\u4e3a,\u653b\u51fb\u8005\u5728\u672a\u7ecf\u6240\u6709\u8005\u540c\u610f\u7684\u60c5\u51b5\u4e0b\u52ab\u6301\u8ba1\u7b97\u8d44\u6e90\u6765\u6316\u6398\u52a0\u5bc6\u8d27\u5e01\u3002\u4e0e\u52d2\u7d22\u8f6f\u4ef6\u6216\u6570\u636e\u6cc4\u9732\u4e0d\u540c,\u52a0\u5bc6\u52ab\u6301\u901a\u5e38\u4e0d\u6613\u88ab\u5bdf\u89c9,\u8fd9\u4f7f\u5176\u5bf9\u9999\u6e2f\u670d\u52a1\u5668\u79df\u7528\u63d0\u4f9b\u5546\u548c\u670d\u52a1\u5668\u6258\u7ba1\u8bbe\u65bd\u5c24\u5176\u5371\u9669\u3002 \u52a0\u5bc6\u52ab\u6301\u8005\u7684\u4f5c\u6848\u624b\u6cd5\u901a\u5e38\u6d89\u53ca\u5411\u7f51\u7ad9\u6ce8\u5165\u6076\u610fJavaScript\u4ee3\u7801\u6216\u5229\u7528\u670d\u52a1\u5668\u8f6f\u4ef6\u4e2d\u7684\u6f0f\u6d1e\u3002\u4e00\u65e6\u5b89\u88c5,\u52a0\u5bc6\u52ab\u6301\u811a\u672c\u5c31\u4f1a\u5229\u7528\u53d7\u5bb3\u8005\u7684CPU\u80fd\u529b\u6765\u89e3\u51b3\u590d\u6742\u7684\u6570\u5b66\u95ee\u9898,\u6709\u6548\u5730\u4e3a\u653b\u51fb\u8005\u6316\u6398\u52a0\u5bc6\u8d27\u5e01\u3002 [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] \u9999\u6e2f\u670d\u52a1\u5668\u73af\u5883\uff1a\u4e3b\u8981\u76ee\u6807 \u9999\u6e2f\u7684\u6218\u7565\u4f4d\u7f6e\u548c\u5148\u8fdb\u7684\u6570\u5b57\u57fa\u7840\u8bbe\u65bd\u4f7f\u5176\u6210\u4e3a\u670d\u52a1\u5668\u79df\u7528\u670d\u52a1\u7684\u7406\u60f3\u67a2\u7ebd\u3002\u7136\u800c,\u8fd9\u4e9b\u56e0\u7d20\u4e5f\u4f7f\u9999\u6e2f\u670d\u52a1\u5668\u6210\u4e3a\u52a0\u5bc6\u52ab\u6301\u8005\u7684\u4e3b\u8981\u76ee\u6807\u3002\u9999\u6e2f\u6570\u636e\u4e2d\u5fc3\u5e38\u89c1\u7684\u9ad8\u901f\u4e92\u8054\u7f51\u8fde\u63a5\u548c\u5f3a\u5927\u786c\u4ef6\u5bf9\u4e8e\u5bfb\u6c42\u6700\u5927\u5316\u975e\u6cd5\u6316\u77ff\u64cd\u4f5c\u7684\u653b\u51fb\u8005\u7279\u522b\u6709\u5438\u5f15\u529b\u3002 [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text] \u68c0\u6d4b\uff1a\u63ed\u9732\u52a0\u5bc6\u52ab\u6301\u8005 \u8bc6\u522b\u52a0\u5bc6\u52ab\u6301\u6d3b\u52a8\u9700\u8981\u7ed3\u5408\u7cfb\u7edf\u76d1\u63a7\u548c\u5206\u6790\u6280\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6781\u5ba2\u65b9\u6cd5\u6765\u68c0\u6d4b\u9999\u6e2f\u670d\u52a1\u5668\u4e0a\u6f5c\u5728\u7684\u52a0\u5bc6\u52ab\u6301\uff1a CPU\u4f7f\u7528\u5206\u6790\uff1a # \u4f7f\u7528top\u547d\u4ee4\u76d1\u63a7CPU\u4f7f\u7528\u7387 top -b -n 1 | grep “Cpu(s)” \u7f51\u7edc\u6d41\u91cf\u68c0\u67e5\uff1a # \u4f7f\u7528tcpdump\u6355\u83b7\u548c\u5206\u6790\u7f51\u7edc\u6d41\u91cf sudo tcpdump -i eth0 -nn -s0 -v port 80 and port 443 \u8fdb\u7a0b\u8c03\u67e5\uff1a # \u5217\u51fa\u6309CPU\u4f7f\u7528\u7387\u6392\u5e8f\u7684\u8fdb\u7a0b ps aux –sort=-%cpu | head -n 10 \u6587\u4ef6\u5b8c\u6574\u6027\u76d1\u63a7\uff1a # \u4f7f\u7528AIDE\u68c0\u67e5\u6587\u4ef6\u53d8\u66f4 aide […]<\/p>\n
Read More…<\/a><\/p>\n","protected":false},"author":3,"featured_media":15546,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[62],"tags":[3448,3434,3435,3436,265],"class_list":["post-15561","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hong-kong-dedicated-server-sc","tag-3448","tag-cryptojacking-sc","tag-detection-sc","tag-prevention-sc","tag-265"],"acf":[],"yoast_head":"\n