{"id":3136,"date":"2020-08-17T18:44:00","date_gmt":"2020-08-17T10:44:00","guid":{"rendered":"http:\/\/www.fatesky.com\/?p=3136"},"modified":"2024-03-19T21:58:10","modified_gmt":"2024-03-19T13:58:10","slug":"%e3%80%90uos%e8%bf%90%e7%bb%b4%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%e3%80%91-ufw%e9%98%b2%e7%81%ab%e5%a2%99","status":"publish","type":"post","link":"https:\/\/www.fatesky.com\/?p=3136","title":{"rendered":"\u3010UOS\u8fd0\u7ef4\u5b66\u4e60\u7b14\u8bb0\u3011- UFW\u9632\u706b\u5899"},"content":{"rendered":"\n

\u4e00\u3001ufw \u4ecb\u7ecd<\/h2>\n\n\n\n
\"\"\/<\/div><\/figure>\n\n\n\n

LInux \u539f\u59cb\u7684\u9632\u706b\u5899\u5de5\u5177 iptables \u7531\u4e8e\u8fc7\u4e8e\u7e41\u7410\uff0c\u6240\u4ee5 ubuntu \u7cfb\u7edf\u9ed8\u8ba4\u63d0\u4f9b\u4e86\u4e00\u4e2a\u57fa\u4e8eiptable \u4e4b\u4e0a\u7684\u9632\u706b\u5899\u5de5\u5177 ufw\u3002\u800c UFW \u652f\u6301\u56fe\u5f62\u754c\u9762\u64cd\u4f5c\uff0c\u53ea\u9700\u5728\u547d\u4ee4\u884c\u8fd0\u884c ufw \u547d\u4ee4\u5373\u80fd\u770b\u5230\u4e00\u7cfb\u5217\u7684\u64cd\u4f5c
UFW \u5168\u79f0\u4e3a Uncomplicated Firewall\uff0c\u662f Ubuntu \u7cfb\u7edf\u4e0a\u9ed8\u8ba4\u7684\u9632\u706b\u5899\u7ec4\u4ef6, \u4e3a\u4e86\u8f7b\u91cf\u5316\u914d\u7f6eiptables \u800c\u5f00\u53d1\u7684\u4e00\u6b3e\u5de5\u5177\u3002 UFW \u63d0\u4f9b\u4e00\u4e2a\u975e\u5e38\u53cb\u597d\u7684\u754c\u9762\u7528\u4e8e\u521b\u5efa\u57fa\u4e8e IPV4\uff0cIPV6 \u7684\u9632\u706b\u5899\u89c4\u5219\u3002
Linux 2.4 \u5185\u6838\u4ee5\u540e\u63d0\u4f9b\u4e86\u4e00\u4e2a\u975e\u5e38\u4f18\u79c0\u7684\u9632\u706b\u5899\u5de5\u5177\uff1anetfilter\/iptables\uff0c\u4ed6\u514d\u8d39\u4e14\u529f\u80fd\u5f3a\u5927\uff0c\u53ef\u4ee5\u5bf9\u6d41\u5165\u3001\u6d41\u51fa\u7684\u4fe1\u606f\u8fdb\u884c\u7ec6\u5316\u63a7\u5236\uff0c\u5b83\u53ef\u4ee5 \u5b9e\u73b0\u9632\u706b\u5899\u3001NAT\uff08\u7f51\u7edc\u5730\u5740\u7ffb\u8bd1\uff09\u548c\u6570\u636e\u5305\u7684\u5206\u5272\u7b49\u529f\u80fd\u3002netfilter \u5de5\u4f5c\u5728\u5185\u6838\u5185\u90e8\uff0c\u800c iptables \u5219\u662f\u8ba9\u7528\u6237\u5b9a\u4e49\u89c4\u5219\u96c6\u7684\u8868\u7ed3\u6784\u3002
\u4f46\u662f iptables \u7684\u89c4\u5219\u7a0d\u5fae\u6709\u4e9b\u201c\u590d\u6742\u201d\uff0c\u56e0\u6b64 ubuntu \u63d0\u4f9b\u4e86 ufw \u8fd9\u4e2a\u8bbe\u5b9a\u5de5\u5177\uff0c\u4ee5\u7b80\u5316 iptables \u7684\u67d0\u4e9b\u8bbe\u5b9a\uff0c\u5176\u540e\u53f0\u4ecd\u7136\u662f iptables\u3002ufw \u5373 uncomplicated firewall \u7684\u7b80\u79f0\uff0c\u4e00\u4e9b\u590d\u6742\u7684\u8bbe\u5b9a\u8fd8\u662f\u8981\u53bb iptables\u3002<\/p>\n\n\n\n

\u4e8c\u3001\u5b89\u88c5\u4e0e\u4f7f\u7528<\/h2>\n\n\n\n
\"\"\/<\/div><\/figure>\n\n\n\n

1.\u5b89\u88c5<\/strong>
sudo apt-get install ufw<\/code>
2.\u542f\u7528<\/strong>
sudo ufw enable
sudo ufw default deny<\/code>
\u8fd0\u884c\u4ee5\u4e0a\u4e24\u6761\u547d\u4ee4\u540e\uff0c\u5f00\u542f\u4e86\u9632\u706b\u5899\uff0c\u5e76\u5728\u7cfb\u7edf\u542f\u52a8\u65f6\u81ea\u52a8\u5f00\u542f\u3002\u5173\u95ed\u6240\u6709\u5916\u90e8\u5bf9\u672c\u673a\u7684\u8bbf\u95ee\uff0c\u4f46\u672c\u673a\u8bbf\u95ee\u5916\u90e8\u6b63\u5e38\u3002
3.\u5f00\u542f\/\u7981\u7528<\/strong>
sudo ufw allow|deny [service]<\/code>
\u6253\u5f00\u6216\u5173\u95ed\u67d0\u4e2a\u7aef\u53e3\uff0c\u4f8b\u5982\uff1a
sudo ufw allow smtp\u3000\u5141\u8bb8\u6240\u6709\u7684\u5916\u90e8IP\u8bbf\u95ee\u672c\u673a\u768425\/tcp (smtp)\u7aef\u53e3
sudo ufw allow 22\/tcp \u5141\u8bb8\u6240\u6709\u7684\u5916\u90e8IP\u8bbf\u95ee\u672c\u673a\u768422\/tcp (ssh)\u7aef\u53e3
sudo ufw allow 53 \u5141\u8bb8\u5916\u90e8\u8bbf\u95ee53\u7aef\u53e3(tcp\/udp)
sudo ufw allow from 192.168.1.100 \u5141\u8bb8\u6b64IP\u8bbf\u95ee\u6240\u6709\u7684\u672c\u673a\u7aef\u53e3
sudo ufw allow proto udp 192.168.0.1 port 53 to 192.168.0.2 port 53
sudo ufw deny smtp \u7981\u6b62\u5916\u90e8\u8bbf\u95eesmtp\u670d\u52a1
sudo ufw delete allow smtp \u5220\u9664\u4e0a\u9762\u5efa\u7acb\u7684\u67d0\u6761\u89c4\u5219<\/span>
4.\u67e5\u770b\u9632\u706b\u5899\u72b6\u6001<\/strong>
sudo ufw status<\/code>
\u4e00\u822c\u7528\u6237\uff0c\u53ea\u9700\u5982\u4e0b\u8bbe\u7f6e\uff1a
sudo apt-get install ufw
sudo ufw enable
sudo ufw default deny<\/code>
\u4ee5\u4e0a\u4e09\u6761\u547d\u4ee4\u5df2\u7ecf\u8db3\u591f\u5b89\u5168\u4e86\uff0c\u5982\u679c\u4f60\u9700\u8981\u5f00\u653e\u67d0\u4e9b\u670d\u52a1\uff0c\u518d\u4f7f\u7528sudo ufw allow\u5f00\u542f\u3002

\u5f00\u542f\/\u5173\u95ed\u9632\u706b\u5899 (\u9ed8\u8ba4\u8bbe\u7f6e\u662f\u2019disable\u2019)
sudo\u00a0\u00a0ufw enable|disable<\/code>
\u8f6c\u6362\u72b6\u6001
sudo\u00a0\u00a0ufw logging on|off<\/code>
\u8bbe\u7f6e\u9ed8\u8ba4\u7b56\u7565 (\u6bd4\u5982 \u201cmostly open\u201d vs \u201cmostly closed\u201d)
sudo\u00a0\u00a0ufw default allow|deny<\/code>
\u8bb8\u53ef\u6216\u8005\u5c4f\u853d\u7aef\u53e3 (\u53ef\u4ee5\u5728\u201cstatus\u201d \u4e2d\u67e5\u770b\u5230\u670d\u52a1\u5217\u8868)\u3002\u53ef\u4ee5\u7528\u201c\u534f\u8bae\uff1a\u7aef\u53e3\u201d\u7684\u65b9\u5f0f\u6307\u5b9a\u4e00\u4e2a\u5b58\u5728\u4e8e\/etc\/services\u4e2d\u7684\u670d\u52a1
\u540d\u79f0\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u5305\u7684meta-data\u3002 \u2018allow\u2019 \u53c2\u6570\u5c06\u628a\u6761\u76ee\u52a0\u5165 \/etc\/ufw\/maps \uff0c\u800c \u2018deny\u2019 \u5219\u76f8\u53cd\u3002\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a
sudo\u00a0\u00a0ufw allow|deny [service]<\/code>
\u663e\u793a\u9632\u706b\u5899\u548c\u7aef\u53e3\u7684\u4fa6\u542c\u72b6\u6001\uff0c\u53c2\u89c1 \/var\/lib\/ufw\/maps\u3002\u62ec\u53f7\u4e2d\u7684\u6570\u5b57\u5c06\u4e0d\u4f1a\u88ab\u663e\u793a\u51fa\u6765\u3002
sudo\u00a0\u00a0ufw status<\/code><\/p>\n\n\n\n

\u4e09\u3001\u76f8\u5173\u4f7f\u7528\u8303\u4f8b\uff1a<\/h2>\n\n\n\n

1\u3001\u8303\u4f8b<\/strong>
\u5141\u8bb8 53 \u7aef\u53e3
sudo ufw allow 53<\/code>
\u7981\u7528 53 \u7aef\u53e3
sudo ufw delete allow 53<\/code>
\u5141\u8bb8 80 \u7aef\u53e3
sudo ufw allow 80\/tcp<\/code>
\u7981\u7528 80 \u7aef\u53e3
sudo ufw delete allow 80\/tcp<\/code>
\u5141\u8bb8 smtp \u7aef\u53e3
sudo ufw allow smtp<\/code>
\u5220\u9664 smtp \u7aef\u53e3\u7684\u8bb8\u53ef
sudo ufw delete allow smtp<\/code>
\u5141\u8bb8\u67d0\u7279\u5b9a IP
sudo ufw allow from 192.168.254.254<\/code>
\u5220\u9664\u4e0a\u9762\u7684\u89c4\u5219
sudo ufw delete allow from 192.168.254.254<\/code>
2\u3001\u5f00\u542f\/\u7981\u7528\u76f8\u5e94\u7aef\u53e3\u6216\u670d\u52a1\uff08\u4e3e\u4f8b\u8bf4\u660e\uff09<\/strong>
sudo ufw allow 80 \u5141\u8bb8\u5916\u90e8\u8bbf\u95ee\u672c\u673a80\u7aef\u53e3
sudo ufw delete allow 80 \u7981\u6b62\u5916\u90e8\u8bbf\u95ee\u672c\u673a80 \u7aef\u53e3
sudo ufw allow from 192.168.1.1 \u5141\u8bb8\u6b64IP\u8bbf\u95ee\u6240\u6709\u7684\u672c\u673a\u7aef\u53e3
sudo ufw deny smtp \u7981\u6b62\u5916\u90e8\u8bbf\u95eesmtp\u670d\u52a1
sudo ufw delete allow smtp \u5220\u9664\u4e0a\u9762\u5efa\u7acb\u7684\u67d0\u6761\u89c4\u5219
sudo ufw deny proto tcp from 10.0.0.0\/8 to 192.168.0.1 port \u8981\u62d2\u7edd\u6240\u6709\u7684\u6d41\u91cf\u4eceTCP\u768410.0.0.0\/8 \u5230\u7aef\u53e322\u7684\u5730\u5740192.168.0.1
\u53ef\u4ee5\u5141\u8bb8\u6240\u6709RFC1918\u7f51\u7edc\uff08\u5c40\u57df\u7f51\/\u65e0\u7ebf\u5c40\u57df\u7f51\u7684\uff09\u8bbf\u95ee\u8fd9\u4e2a\u4e3b\u673a\uff08\/8,\/16,\/12\u662f\u4e00\u79cd\u7f51\u7edc\u5206\u7ea7\uff09\uff1a
sudo ufw allow from 10.0.0.0\/8
sudo ufw allow from 172.16.0.0\/12
sudo ufw allow from 192.168.0.0\/16<\/p>\n\n\n\n

\u56db\u3001\u66f4\u8be6\u7ec6\u7684\u8bf4\u660e<\/h2>\n\n\n\n

\uff3b\uff3d\u662f\u4ee3\u8868\u53ef\u9009\u5185\u5bb9\u3002\u53ef\u80fd\u9700\u8981root\u6743\u9650\uff0c\u5982\u65e0\u6cd5\u8fd0\u884c\uff0c\u8bf7\u4f7f\u7528 sudo ufw\u2026\u2026\u7684\u547d\u4ee4\u7ed3\u6784\u3002\u201c\u201d\u4e2d\u7684\u5185\u5bb9\u4e0d\u80fd\u7167\u6284\uff0c\u8981\u6309\u9700\u8981\u66f4\u6539\u3002
ufw [–dry-run] enable|disable|reload
\u547d\u4ee4\uff3b\u2013\u8bd5\u8fd0\u884c\uff3d\u6fc0\u6d3b\uff5c\u5173\u95ed\uff5c\u91cd\u65b0\u8f7d\u5165
ufw [–dry-run] default allow|deny|reject [incoming|outgoing]
\u547d\u4ee4\uff3b\u2013\u8bd5\u8fd0\u884c\uff3d\u9ed8\u8ba4 \u5141\u8bb8\uff5c\u963b\u6b62\uff5c\u62d2\u7edd \uff3b\u8bbf\u95ee\u672c\u673a\u7684\u89c4\u5219\uff5c\u5411\u5916\u8bbf\u95ee\u7684\u89c4\u5219\uff3d
\u6ce8\uff1areject\u8ba9\u8bbf\u95ee\u8005\u77e5\u9053\u6570\u636e\u88ab\u62d2\u7edd\uff08\u56de\u9988\u62d2\u7edd\u4fe1\u606f\uff09\u3002deny\u5219\u76f4\u63a5\u4e22\u5f03\u8bbf\u95ee\u6570\u636e\uff0c\u8bbf\u95ee\u8005\u4e0d\u77e5\u9053\u662f\u8bbf\u95ee\u88ab\u62d2\u7edd\u8fd8\u662f\u4e0d\u5b58\u5728\u8be5\u4e3b\u673a\u3002
ufw [–dry-run] logging on|off|LEVEL
\u547d\u4ee4\uff3b\u2013\u8bd5\u8fd0\u884c\uff3d\u65e5\u5fd7 \u5f00\u542f\uff5c\u5173\u95ed\uff5c\u201c\u7ea7\u522b\u201d
ufw [–dry-run] reset
\u547d\u4ee4\uff3b\u2013\u8bd5\u8fd0\u884c\uff3d\u590d\u4f4d
ufw [–dry-run] status [verbose|numbered]
\u547d\u4ee4\uff3b\u2013\u8bd5\u8fd0\u884c\uff3d\u72b6\u6001 \uff3b\u8be6\u7ec6\uff5c\u88ab\u7f16\u53f7\u7684\u89c4\u5219\uff3d
ufw [–dry-run] show REPORT
\u547d\u4ee4\uff3b\u2013\u8bd5\u8fd0\u884c\uff3d\u663e\u793a \u201c\u62a5\u544a\u7c7b\u578b\u201d
ufw [–dry-run] [delete] [insert NUM] allow|deny|reject|limit\u00a0\u00a0[in|out][log|log-all] PORT[\/protocol]
\u547d\u4ee4\uff3b\u2013\u8bd5\u8fd0\u884c\uff3d\uff3b\u5220\u9664\uff3d \uff3b\u63d2\u5230\u201cx\u53f7\u89c4\u5219\u201d\u4e4b\u524d\uff3d \u5141\u8bb8\uff5c\u963b\u6b62\uff5c\u62d2\u7edd\uff5c\u9650\u5236 \uff3b\u8fdb\uff5c\u51fa\uff3d \uff3b\u8bb0\u5f55\u65b0\u8fde\u63a5\uff5c\u8bb0\u5f55\u6240\u6709\u6570\u636e\u5305\uff3d \u201c\u7aef\u53e3\u201d \uff3b\/\u201c\u534f\u8bae\u201d\uff3d
ufw\u00a0\u00a0[–dry-run]\u00a0\u00a0[delete] [insert NUM] allow|deny|reject|limit [in|out on INTERFACE] [log|log-all] [proto protocol] [from ADDRESS [port PORT]] [to ADDRESS [port PORT]]
\u547d\u4ee4 \uff3b\u2013\u8bd5\u8fd0\u884c\uff3d\uff3b\u5220\u9664\uff3d\uff3b\u63d2\u5230x\u53f7\u89c4\u5219\u4e4b\u524d\uff3d \u5141\u8bb8\uff5c\u963b\u6b62\uff5c\u62d2\u7edd\uff5c\u9650\u5236 \uff3b\u8fdb\uff5c\u51fa \u57fa\u4e8e\u201c\u4ec0\u4e48\u7f51\u7edc\u8bbe\u5907\u201d\uff3d \uff3b\u534f\u8bae \u201c\u534f\u8bae\u201d\uff3d \uff3b\u6765\u6e90 \u201c\u5730\u5740\u201d \uff3b\u7aef\u53e3 \u201c\u7aef\u53e3\u201d\uff3d\uff3d \uff3b\u76ee\u6807 \u201c\u5730\u5740\u201d \uff3b\u7aef\u53e3 \u201c\u7aef\u53e3\u201d\uff3d\uff3d
ufw [–dry-run] delete NUM
\u547d\u4ee4\uff3b\u2013\u8bd5\u8fd0\u884c\uff3d \u5220\u9664 \u201c\u7b2cX\u53f7\u89c4\u5219\u201d
ufw [–dry-run] app list|info|default|update
\u547d\u4ee4 \uff3b\u2013\u8bd5\u8fd0\u884c\uff3d \u7a0b\u5e8f \u6e05\u5355\uff5c\u4fe1\u606f\uff5c\u9ed8\u8ba4\uff5c\u66f4\u65b0<\/p>\n\n\n\n

\u53c2\u6570
\u2013version
\u663e\u793a\u7a0b\u5e8f\u7248\u672c\u53f7
-h , \u2013help
\u663e\u793a\u5e2e\u52a9\u4fe1\u606f
\u2013dry-run
\u4e0d\u5b9e\u9645\u8fd0\u884c\uff0c\u53ea\u662f\u628a\u6d89\u53ca\u7684\u66f4\u6539\u663e\u793a\u51fa\u6765\u3002
enable
\u6fc0\u6d3b\u9632\u706b\u5899\uff0c\u5f00\u673a\u65f6\u81ea\u52a8\u542f\u52a8
disable
\u5173\u95ed\u9632\u706b\u5899\uff0c\u5f00\u673a\u65f6\u4e0d\u542f\u52a8
reload
\u91cd\u65b0\u8f7d\u5165\u9632\u706b\u5899
default allow|deny|reject \u65b9\u5411
\u65b9\u5411\u662f\u6307\uff1a\u5411\u5185\uff08incoming\uff09\uff5c\u5411\u5916\uff08outgoing\uff09\u3002\u5982\u679c\u66f4\u6539\u4e86\u9ed8\u8ba4\u7b56\u7565\uff0c\u4e00\u4e9b\u5df2\u7ecf\u5b58\u5728\u7684\u89c4\u5219\u53ef\u80fd\u9700\u8981\u624b\u52a8\u4fee\u6539\u3002\u66f4\u591a\u5185\u5bb9\u770b\u201c\u89c4\u5219\u793a\u4f8b\u201d\u4e00\u8282\u3002
logging on|off|\u201c\u7ea7\u522b\u201d
\u5207\u6362\u65e5\u5fd7\u72b6\u6001\u3002\u65e5\u5fd7\u8bb0\u5f55\u5305\u4f7f\u7528\u7684\u662f\u7cfb\u7edf\u65e5\u5fd7\u3002\u201c\u7ea7\u522b\u201d\u6709\u597d\u51e0\u4e2a\uff0c\u9ed8\u8ba4\u662f\u4f4e\u7ea7\uff08low\uff09\u3002\u8be6\u7ec6\u5185\u5bb9\u770b\u201c\u65e5\u5fd7\u201d\u4e00\u8282\u3002
reset [–force]
\u5173\u95ed\u9632\u706b\u5899\uff0c\u5e76\u590d\u4f4d\u81f3\u521d\u59cb\u5b89\u88c5\u72b6\u6001\u3002\u5982\u679c\u4f7f\u7528\u2013force\u9009\u9879\uff0c\u5219\u5ffd\u7565\u786e\u8ba4\u63d0\u793a\u3002
status
\u663e\u793a\u9632\u706b\u5899\u7684\u72b6\u6001\u548c\u5df2\u7ecf\u8bbe\u5b9a\u7684\u89c4\u5219\u3002\u4f7f\u7528status verbose\u663e\u793a\u66f4\u8be6\u7ec6\u7684\u4fe1\u606f\u3002\u2018anywhere\u2019\u4e0e\u2018any\u2019\u3001\u20180.0.0.0\/0\u2019\u4e00\u4e2a\u610f\u601d\u3002
show \u201c\u62a5\u544a\u7c7b\u578b\u201d
\u663e\u793a\u9632\u706b\u5899\u8fd0\u884c\u4fe1\u606f\u3002\u8be6\u7ec6\u5185\u5bb9\u770b\u201c\u62a5\u544a\u7c7b\u578b\u201d
limit \u201c\u89c4\u5219\u201d
\u6b64\u547d\u4ee4\u76ee\u524d\u53ea\u80fd\u7528\u4e8eIPv4\u3002\u8fd8\u4e0d\u652f\u6301IPv6.
\u89c4\u5219\u793a\u4f8b
\u89c4\u5219\u53ef\u4ee5\u7b80\u5199\u4e5f\u53ef\u4ee5\u5b8c\u6574\u8868\u8fbe\u3002\u7b80\u5199\u7684\u89c4\u5219\u53ea\u80fd\u6307\u5b9a\u7aef\u53e3\u548c\uff08\u6216\uff09\u534f\u8bae\u88ab\u5141\u8bb8\u6216\u963b\u6b62\u3002\u9ed8\u8ba4\u662f\u8bbf\u95ee\u672c\u673a\u7684\u89c4\u5219\uff08incoming\uff09\u3002\u4f8b\u5982\uff1a
ufw allow 53
\u5141\u8bb8\u673a\u5b50\u8bbf\u95ee\u672c\u673a53\u7aef\u53e3\uff0c\u534f\u8bae\u5305\u542btcp\u548cudp\u3002
\u5982\u679c\u8981\u63a7\u5236\u534f\u8bae\uff0c\u53ea\u8981\u52a0\u5165\u201c\/\u534f\u8bae\u201d\u5728\u7aef\u53e3\u540e\u9762\u5c31\u884c\u4e86\u3002\u4f8b\u5982\uff1a
ufw allow 25\/tcp
\u5141\u8bb8\u5176\u5b83\u673a\u5b50\u4f7f\u7528tcp\u534f\u8bae\u8bbf\u95ee25\u7aef\u53e3\u3002
UFW\u4e5f\u53ef\u4ee5\u68c0\u67e5 \/etc\/services\u6587\u4ef6\uff0c\u660e\u767d\u670d\u52a1\u7684\u540d\u5b57\u53ca\u5bf9\u5e94\u7684\u7aef\u53e3\u548c\u534f\u8bae\u3002\u6211\u4eec\u4f7f\u7528\u670d\u52a1\u7684\u540d\u79f0\u5373\u53ef\u3002
ufw allow smtp
UFW\u540c\u65f6\u652f\u6301\u51fa\u5165\u53e3\u8fc7\u6ee4\u3002\u7528\u6237\u53ef\u4ee5\u4f7f\u7528in\u6216out\u6765\u6307\u5b9a\u5411\u5185\u8fd8\u662f\u5411\u5916\u3002\u5982\u679c\u672a\u6307\u5b9a\uff0c\u9ed8\u8ba4\u662fin\u3002\u4f8b\u5982\uff1a
ufw allow in http
ufw reject out smtp
ufw deny out to 192.168.1.1
\u963b\u6b62\u5411192.168.1.1\u53d1\u9001\u4fe1\u606f
\u7528\u6237\u4e5f\u53ef\u4f7f\u7528\u5b8c\u6574\u7684\u89c4\u5219\u6765\u6307\u5b9a\u6765\u6e90\u4e0e\u76ee\u7684\u5730\uff0c\u8fd8\u6709\u7aef\u53e3\u3002\u4e66\u5199\u89c4\u5219\u57fa\u4e8eOpenBSD PF\u3002\u4e3e\u4f8b\uff1a
ufw deny proto tcp to any port 80
\u963b\u6b62\u672c\u673a\u7528tcp\u534f\u8bae\u572880\u7aef\u53e3\u53d1\u6570\u636e
ufw deny proto tcp from 10.0.0.0\/8 to 192.168.0.1 port 25
This will deny all traffic from the RFC1918 Class A network to tcp port 25 with the address 192.168.0.1.\uff08\u8fd9\u6761\u547d\u4ee4\u76ee\u524d\u65e0\u6cd5\u7ffb\u8bd1 from \u548c to\u7684\u5173\u7cfb\uff0c\u5e0c\u671b\u540e\u6765\u8005\u66f4\u6539\uff09
ufw\u4e5f\u53ef\u4ee5\u4f7f\u7528IPv6\u534f\u8bae\u3002\u4f46\u8981\u4e8b\u5148\u5728\/etc\/default\/ufw \u4e2d\u8bbe\u5b9aIPv6\u4e3a\u542f\u52a8\u72b6\u6001\u3002\u4e3e\u4f8b\uff1a
ufw deny proto tcp from 2001:db8::\/32 to any port 25
\u963b\u6b62IPv6\u4e3a2001:db8::\/32\u7c7b\u578b\u7684\u5730\u5740\uff0c\u8fde\u63a5\u672c\u673a25\u7aef\u53e3
ufw\u53ef\u4ee5\u8fde\u7eed\u4f8b\u4e3e\u7aef\u53e3\u53f7\u3002\u7aef\u53e3\u53f7\u95f4\u5fc5\u987b\u4f7f\u7528\u9017\u53f7\u6216\u5206\u53f7\uff0c\u4e0d\u80fd\u4f7f\u7528\u7a7a\u683c\u3002\u201c\u8f93\u5165\u7aef\u53e3\u53f7\u201d\u5b57\u7b26\u6570\u6700\u591a\u4e0d\u80fd\u8d85\u8fc715\u8fc7\uff088080\uff1a8090\u7b97\u4e24\u4e2a\u5b57\u7b26\uff09\u3002\u6bd4\u5982\u5141\u8bb880,443\uff0c8080\uff5e8090\u8fd9\u51e0\u4e2a\u7aef\u53e3\u63a5\u53d7tcp\u4f20\u5165\u8fde\u63a5\u3002
ufw allow proto tcp from any to any port 80,443,8080:8090
\u6b64\u4f8b\uff0c\u201c\u8f93\u5165\u7aef\u53e3\u53f7\u201d\u5b57\u7b26\u6570\u4e3a4\u4e2a\u3002
ufw\u53ef\u4ee5\u5bf9\u8fde\u63a5\u6570\u7387\u8fdb\u884c\u9650\u5236\uff0c\u4ee5\u9632\u8303\u66b4\u529b\u767b\u5f55\u653b\u51fb\u3002\u5982\u679c\u540c\u4e00\u4e2aIP\u5730\u5740\u572830\u79d2\u4e4b\u5185\u8fdb\u884c\u4e866\u6b21\u53ca6\u6b21\u4ee5\u4e0a\u7684\u8fde\u63a5\uff0cufw\u5c06\u963b\u6b62\uff08deny\uff09\u8be5\u8fde\u63a5\u3002\u53ef\u4ee5\u67e5\u770b\u66f4\u591a\u4fe1\u606f\u3002
ufw limit ssh\/tcp
\u5f53\u7136\u6709\u4e9b\u65f6\u5019\u6211\u4eec\u60f3\u8ba9\u8bbf\u95ee\u8005\u77e5\u9053\u4ed6\u7684\u8bbf\u95ee\u88ab\u62d2\u7edd\u4e86,\u800c\u4e0d\u662f\u4fdd\u6301\u6c89\u9ed8\u8ba9\u4ed6\u4e0d\u77e5\u9053\u54ea\u51fa\u4e86\u95ee\u9898\u3002\u5c31\u4f7f\u7528reject\u4ee3\u66ffdeny
ufw reject auth
\u9ed8\u8ba4\u60c5\u51b5\u4e0bufw\u7684\u6240\u6709\u89c4\u5219\u9488\u5bf9\u6240\u6709\u7f51\u7edc\u8bbe\u5907\uff08\u6bd4\u5982\u7f51\u53611\uff0c\u7f51\u53612\uff0c\u65e0\u7ebf\u7f51\u53611\uff0c\u865a\u62df\u7f51\u53611\u2026\u2026\uff09\u3002\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u7279\u522b\u6307\u5b9a\uff0c\u67d0\u89c4\u5219\u5728\u4ec0\u4e48\u7f51\u7edc\u8bbe\u5907\u4e0a\u751f\u6548\u3002\u6ce8\u610f\u53ea\u80fd\u4f7f\u7528\u8bbe\u5907\u53f7\uff0c\u4e0d\u80fd\u7528\u522b\u540d\u3002\u6bd4\u5982\u6709\u7ebf\u7f51\u5361\uff1aeth0(\u4f60\u53ef\u4ee5\u4f7f\u7528ifconfig\u547d\u4ee4\u67e5\u770b\u4f60\u73b0\u6709\u7684\u7f51\u7edc\u8bbe\u5907\uff09
ufw allow in on eth0 to any port 80 proto tcp
\u8981\u5220\u9664\u89c4\u5219\uff0c\u53ea\u8981\u5728\u547d\u4ee4\u4e2d\u52a0\u5165delete\u5c31\u884c\u4e86\u3002\u6bd4\u5982\uff1a
ufw deny 80\/tcp
\u8981\u5220\u9664\u8fd9\u6761\u547d\u4ee4\u5efa\u7acb\u7684\u89c4\u5219<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00\u3001ufw \u4ecb\u7ecd LInux \u539f\u59cb\u7684\u9632\u706b\u5899\u5de5\u5177 iptables \u7531\u4e8e\u8fc7\u4e8e\u7e41\u7410\uff0c\u6240\u4ee5 ubuntu \u7cfb\u7edf\u9ed8\u8ba4\u63d0 […]<\/p>\n","protected":false},"author":1,"featured_media":3174,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[123,121,122],"class_list":["post-3136","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-2","tag-iptables","tag-ufw","tag-122"],"_links":{"self":[{"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/posts\/3136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3136"}],"version-history":[{"count":1,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/posts\/3136\/revisions"}],"predecessor-version":[{"id":3278,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/posts\/3136\/revisions\/3278"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=\/wp\/v2\/media\/3174"}],"wp:attachment":[{"href":"https:\/\/www.fatesky.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fatesky.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}