{"id":17306,"date":"2024-11-18T17:38:37","date_gmt":"2024-11-18T09:38:37","guid":{"rendered":"https:\/\/fwq.ai\/blog\/17306\/"},"modified":"2024-11-18T17:38:37","modified_gmt":"2024-11-18T09:38:37","slug":"%e5%a6%82%e4%bd%95%e8%bf%9b%e8%a1%8clinux%e7%b3%bb%e7%bb%9f%e7%9a%84%e7%bd%91%e7%bb%9c%e5%ae%89%e5%85%a8%e9%85%8d%e7%bd%ae%e5%92%8c%e9%98%b2%e6%8a%a4","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/17306\/","title":{"rendered":"\u5982\u4f55\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u7f51\u7edc\u5b89\u5168\u914d\u7f6e\u548c\u9632\u62a4"},"content":{"rendered":"

\"\u5982\u4f55\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u7f51\u7edc\u5b89\u5168\u914d\u7f6e\u548c\u9632\u62a4\u63d2\u56fe\"<\/p>\n

\u968f\u7740Linux\u7cfb\u7edf\u7684\u5e7f\u6cdb\u5e94\u7528\uff0c\u7f51\u7edc\u5b89\u5168\u5df2\u7ecf\u6210\u4e3a\u4e86\u4e00\u9879\u81f3\u5173\u91cd\u8981\u7684\u4efb\u52a1\u3002\u5728\u9762\u5bf9\u5404\u79cd\u5b89\u5168\u5a01\u80c1\u7684\u540c\u65f6\uff0c\u7cfb\u7edf\u7ba1\u7406\u5458\u9700\u8981\u5bf9\u670d\u52a1\u5668\u5b9e\u73b0\u7f51\u7edc\u5b89\u5168\u914d\u7f6e\u548c\u9632\u62a4\u63aa\u65bd\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5bf9Linux\u7cfb\u7edf\u8fdb\u884c\u7f51\u7edc\u5b89\u5168\u914d\u7f6e\u548c\u9632\u62a4\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

    \n
  1. \u914d\u7f6e\u9632\u706b\u5899
    Linux\u7cfb\u7edf\u9ed8\u8ba4\u91c7\u7528iptables\u4f5c\u4e3a\u9632\u706b\u5899\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6765\u914d\u7f6e\uff1a<\/li>\n<\/ol>\n
    # \u5173\u95ed\u73b0\u6709\u9632\u706b\u5899\nservice iptables stop\n\n# \u6e05\u7a7aiptables\u89c4\u5219\niptables -F\n\n# \u5141\u8bb8\u672c\u5730\u56de\u73af\u63a5\u53e3\niptables -A INPUT -i lo -j ACCEPT\n\n# \u5141\u8bb8ping\niptables -A INPUT -p icmp -j ACCEPT\n\n# \u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u8fde\u63a5\niptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT\n\n# \u5141\u8bb8SSH\u8bbf\u95ee\niptables -A INPUT -p tcp --dport 22 -j ACCEPT\n\n# \u5176\u4ed6\u8bbf\u95ee\u4e00\u5f8b\u7981\u6b62\niptables -P INPUT DROP\niptables -P FORWARD DROP<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
      \n
    1. \u5173\u95ed\u4e0d\u5fc5\u8981\u7684\u670d\u52a1
      \u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u6709\u4e00\u4e9b\u4e0d\u5fc5\u8981\u7684\u670d\u52a1\u5728\u540e\u53f0\u8fd0\u884c\uff0c\u8fd9\u4e9b\u670d\u52a1\u4f1a\u5360\u7528\u670d\u52a1\u5668\u8d44\u6e90\uff0c\u4e5f\u4f1a\u7ed9\u7cfb\u7edf\u5e26\u6765\u6f5c\u5728\u7684\u5b89\u5168\u9690\u60a3\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6765\u5173\u95ed\u4e0d\u5fc5\u8981\u7684\u670d\u52a1\uff1a<\/li>\n<\/ol>\n
      # \u5173\u95edNFS\u670d\u52a1\nservice nfs stop\nchkconfig nfs off\n\n# \u5173\u95edX Window\u56fe\u5f62\u754c\u9762\nyum groupremove \"X Window System\"\n\n# \u5173\u95edFTP\u670d\u52a1\nservice vsftpd stop\nchkconfig vsftpd off<\/pre>\n
        \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
        \n
      1. \u5b89\u88c5\u548c\u4f7f\u7528Fail2ban
        Fail2ban\u662f\u4e00\u6b3e\u5f00\u6e90\u7684\u5b89\u5168\u5de5\u5177\uff0c\u80fd\u591f\u76d1\u63a7\u7f51\u7edc\u72b6\u51b5\uff0c\u68c0\u6d4b\u5230\u53ef\u7591\u7684\u767b\u5f55\u5c1d\u8bd5\uff0c\u5e76\u901a\u8fc7\u9632\u706b\u5899\u81ea\u52a8\u5730\u8fdb\u884c\u9ed1\u540d\u5355\u9650\u5236\uff0c\u4ece\u800c\u6709\u6548\u5730\u4fdd\u62a4\u7f51\u7edc\u5b89\u5168\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6765\u5b89\u88c5Fail2ban\uff1a<\/li>\n<\/ol>\n
        yum install fail2ban -y<\/pre>\n
          \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
        \u914d\u7f6e\u6587\u4ef6\uff1a\/etc\/fail2ban\/jail.conf<\/p>\n
        \u6dfb\u52a0\u81ea\u5b9a\u4e49\u89c4\u5219\uff1a<\/p>\n
        # \u5728jail.conf\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4e00\u884c\uff1a\n[my_sshd]\nenabled = true\nport = ssh\nfilter = my_sshd\nlogpath = \/var\/log\/secure\nmaxretry = 3<\/pre>\n
          \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
        \u521b\u5efafilter\u89c4\u5219\uff1a<\/p>\n
        # \u5728\/etc\/fail2ban\/filter.d\/\u76ee\u5f55\u4e0b\uff0c\u521b\u5efamy_sshd.conf\u6587\u4ef6\uff0c\u7136\u540e\u7f16\u8f91\uff1a\n[Definition]\nfailregex = .*Failed (password|publickey).* from <host>\nignoreregex =<\/host><\/pre>\n
          \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
          \n
        1. \u914d\u7f6eSSH
          SSH\u662f\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u4e14\u5e7f\u6cdb\u5e94\u7528\u7684\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff0c\u4e5f\u662f\u4f17\u591a\u9ed1\u5ba2\u653b\u51fb\u7684\u76ee\u6807\u3002\u56e0\u6b64\uff0c\u5728\u4f7f\u7528SSH\u65f6\u9700\u8981\u91c7\u53d6\u4e00\u4e9b\u5b89\u5168\u63aa\u65bd\uff1a<\/li>\n<\/ol>\n
          # \u4fee\u6539SSH\u9ed8\u8ba4\u7aef\u53e3\nvim \/etc\/ssh\/sshd_config\n# \u5c06Port 22\u4fee\u6539\u4e3a\u5176\u4ed6\u7aef\u53e3\uff0c\u4f8b\u5982\uff1a\nPort 22222\n\n# \u7981\u6b62root\u767b\u5f55\nvim \/etc\/ssh\/sshd_config\n# \u5c06PermitRootLogin yes\u4fee\u6539\u4e3aPermitRootLogin no\n\n# \u9650\u5236\u7528\u6237\u767b\u5f55\nvim \/etc\/ssh\/sshd_config\n# \u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\uff1a\nAllowUsers user1 user2<\/pre>\n
            \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
            \n
          1. \u7981\u7528IPv6
            \u5927\u90e8\u5206\u670d\u52a1\u5668\u7684\u7f51\u7edc\u73af\u5883\u4e2d\uff0c\u5e76\u4e0d\u9700\u8981IPv6\uff0c\u7981\u7528IPv6\u53ef\u4ee5\u6709\u6548\u964d\u4f4e\u7cfb\u7edf\u88ab\u653b\u51fb\u7684\u98ce\u9669\uff1a<\/li>\n<\/ol>\n
            # \u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\u5230\/etc\/sysctl.conf\u6587\u4ef6\u4e2d\uff1a\nnet.ipv6.conf.all.disable_ipv6 = 1\nnet.ipv6.conf.default.disable_ipv6 = 1\n\n# \u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u751f\u6548\uff1a\nsysctl -p<\/pre>\n
              \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
            \u603b\u7ed3
            \u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u5bf9Linux\u7cfb\u7edf\u8fdb\u884c\u7f51\u7edc\u5b89\u5168\u914d\u7f6e\u548c\u9632\u62a4\uff0c\u5176\u4e2d\u5305\u62ec\u4e86\u914d\u7f6e\u9632\u706b\u5899\u3001\u5173\u95ed\u4e0d\u5fc5\u8981\u7684\u670d\u52a1\u3001\u5b89\u88c5\u548c\u4f7f\u7528Fail2ban\u3001\u914d\u7f6eSSH\u548c\u7981\u7528IPv6\u7b49\u65b9\u9762\u3002\u672c\u6587\u4e2d\u63d0\u4f9b\u7684\u793a\u4f8b\u4ee3\u7801\u53ef\u4ee5\u5e2e\u52a9\u7ba1\u7406\u5458\u66f4\u52a0\u65b9\u4fbf\u5feb\u6377\u5730\u5b8c\u6210\u7f51\u7edc\u5b89\u5168\u5de5\u4f5c\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u8fd8\u5e94\u6839\u636e\u5177\u4f53\u60c5\u51b5\u8fdb\u884c\u76f8\u5e94\u7684\u8c03\u6574\u548c\u5b8c\u5584\u3002<\/p>\n
            \u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u7f51\u7edc\u5b89\u5168\u914d\u7f6e\u548c\u9632\u62a4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
            \u968f\u7740Linux\u7cfb\u7edf\u7684\u5e7f\u6cdb\u5e94\u7528\uff0c\u7f51\u7edc\u5b89\u5168\u5df2\u7ecf\u6210\u4e3a\u4e86\u4e00\u9879\u81f3\u5173\u91cd\u8981\u7684\u4efb\u52a1\u3002\u5728\u9762\u5bf9\u5404\u79cd\u5b89\u5168\u5a01\u80c1\u7684\u540c\u65f6\uff0c\u7cfb\u7edf\u7ba1\u7406\u5458\u9700\u8981\u5bf9\u670d\u52a1\u5668\u5b9e\u73b0\u7f51\u7edc\u5b89\u5168\u914d\u7f6e\u548c\u9632\u62a4\u63aa\u65bd\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5bf9Linux\u7cfb\u7edf\u8fdb\u884c\u7f51\u7edc\u5b89\u5168\u914d\u7f6e\u548c\u9632\u62a4\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002 \u914d\u7f6e\u9632\u706b\u5899Linux\u7cfb\u7edf\u9ed8\u8ba4\u91c7\u7528iptables\u4f5c\u4e3a\u9632\u706b\u5899\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6765\u914d\u7f6e\uff1a # \u5173\u95ed\u73b0\u6709\u9632\u706b\u5899 service iptables stop # \u6e05\u7a7aiptables\u89c4\u5219 iptables -F # \u5141\u8bb8\u672c\u5730\u56de\u73af\u63a5\u53e3 iptables -A INPUT -i lo -j ACCEPT # \u5141\u8bb8ping iptables -A INPUT -p icmp -j ACCEPT # \u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u8fde\u63a5 iptables -A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT # \u5141\u8bb8SSH\u8bbf\u95ee iptables -A INPUT -p tcp –dport 22 -j ACCEPT # \u5176\u4ed6\u8bbf\u95ee\u4e00\u5f8b\u7981\u6b62 iptables -P […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-17306","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/17306","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=17306"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/17306\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=17306"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=17306"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=17306"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}