{"id":975,"date":"2012-07-28T13:31:38","date_gmt":"2012-07-28T05:31:38","guid":{"rendered":"http:\/\/www.huzs.top\/?p=975"},"modified":"2013-12-30T13:42:42","modified_gmt":"2013-12-30T05:42:42","slug":"vps%e4%b8%8aiptables%e9%98%b2%e7%81%ab%e5%a2%99%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%ae%be%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/www.huzs.top\/?p=975","title":{"rendered":"VPS\u4e0aiptables\u9632\u706b\u5899\u7684\u57fa\u672c\u8bbe\u7f6e"},"content":{"rendered":"<p>iptables\u662fLinux\u4e0a\u5e38\u7528\u7684\u9632\u706b\u5899\u8f6f\u4ef6\uff0c\u4e00\u822cVPS\u7cfb\u7edf\u91cc\u9762\u9ed8\u8ba4\u90fd\u6709\u96c6\u6210\u3002<\/p>\n<p>1\u3001\u5b89\u88c5iptables\u9632\u706b\u5899<\/p>\n<p>\u5982\u679c\u6ca1\u6709\u5b89\u88c5iptables\u9700\u8981\u5148\u5b89\u88c5\uff0cCentOS\u6267\u884c\uff1a<\/p>\n<pre>yum install iptables<\/pre>\n<p>Debian\/Ubuntu\u6267\u884c\uff1a<\/p>\n<pre>apt-get install iptables<\/pre>\n<p>2\u3001\u6e05\u9664\u5df2\u6709iptables\u89c4\u5219<\/p>\n<pre>iptables -F<br>iptables -X<br>iptables -Z<\/pre>\n<p>3\u3001\u5f00\u653e\u6307\u5b9a\u7684\u7aef\u53e3<br \/>#\u5141\u8bb8\u672c\u5730\u56de\u73af\u63a5\u53e3(\u5373\u8fd0\u884c\u672c\u673a\u8bbf\u95ee\u672c\u673a)<\/p>\n<pre>iptables -A INPUT -s 127.0.0.1 -d 127.0.0.1 -j ACCEPT<\/pre>\n<p># \u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u6216\u76f8\u5173\u8fde\u7684\u901a\u884c<\/p>\n<pre>iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT<\/pre>\n<p>#\u5141\u8bb8\u6240\u6709\u672c\u673a\u5411\u5916\u7684\u8bbf\u95ee<\/p>\n<pre>iptables -A OUTPUT -j ACCEPT<\/pre>\n<p><!--more--><br \/># \u5141\u8bb8\u8bbf\u95ee22\u7aef\u53e3<\/p>\n<pre>iptables -A INPUT -p tcp --dport 22 -j ACCEPT<\/pre>\n<p>#\u5141\u8bb8\u8bbf\u95ee80\u7aef\u53e3<\/p>\n<pre>iptables -A INPUT -p tcp --dport 80 -j ACCEPT<\/pre>\n<p>#\u5141\u8bb8FTP\u670d\u52a1\u768421\u548c20\u7aef\u53e3<\/p>\n<pre>iptables -A INPUT -p tcp --dport 21 -j ACCEPT<br>iptables -A INPUT -p tcp --dport 20 -j ACCEPT<br>iptables -A INPUT -p tcp --dport 30000:30999 -j ACCEPT<\/pre>\n<p>#\u5982\u679c\u6709\u5176\u4ed6\u7aef\u53e3\u7684\u8bdd\uff0c\u89c4\u5219\u4e5f\u7c7b\u4f3c\uff0c\u7a0d\u5fae\u4fee\u6539\u4e0a\u8ff0\u8bed\u53e5\u5c31\u884c<br \/>#\u7981\u6b62\u5176\u4ed6\u672a\u5141\u8bb8\u7684\u89c4\u5219\u8bbf\u95ee\uff08\u6ce8\u610f\uff1a\u5982\u679c22\u7aef\u53e3\u672a\u52a0\u5165\u5141\u8bb8\u89c4\u5219\uff0cSSH\u94fe\u63a5\u4f1a\u76f4\u63a5\u65ad\u5f00\u3002\uff09<br \/>1\uff09.\u7528DROP\u65b9\u6cd5<\/p>\n<pre>iptables -A INPUT -p tcp -j DROP<\/pre>\n<p>2\uff09.\u7528REJECT\u65b9\u6cd5<\/p>\n<pre>iptables -A INPUT -j REJECT<br>iptables -A FORWARD -j REJECT<\/pre>\n<p>4\u3001\u5c4f\u853dIP<br \/>#\u5982\u679c\u53ea\u662f\u60f3\u5c4f\u853dIP\u7684\u8bdd\u201c3\u3001\u5f00\u653e\u6307\u5b9a\u7684\u7aef\u53e3\u201d\u53ef\u4ee5\u76f4\u63a5\u8df3\u8fc7\u3002<br \/>#\u5c4f\u853d\u5355\u4e2aIP\u7684\u547d\u4ee4\u662f<\/p>\n<pre>iptables -I INPUT -s 123.45.6.7 -j DROP<\/pre>\n<p>#\u5c01\u6574\u4e2a\u6bb5\u5373\u4ece123.0.0.1\u5230123.255.255.254\u7684\u547d\u4ee4<\/p>\n<pre>iptables -I INPUT -s 123.0.0.0\/8 -j DROP<\/pre>\n<p>#\u5c01IP\u6bb5\u5373\u4ece123.45.0.1\u5230123.45.255.254\u7684\u547d\u4ee4<\/p>\n<pre>iptables -I INPUT -s 124.45.0.0\/16 -j DROP<\/pre>\n<p>#\u5c01IP\u6bb5\u5373\u4ece123.45.6.1\u5230123.45.6.254\u7684\u547d\u4ee4\u662f<\/p>\n<pre>iptables -I INPUT -s 123.45.6.0\/24 -j DROP<\/pre>\n<p>4\u3001\u67e5\u770b\u5df2\u6dfb\u52a0\u7684iptables\u89c4\u5219<\/p>\n<pre>iptables -L -n<\/pre>\n<p>v\uff1a\u663e\u793a\u8be6\u7ec6\u4fe1\u606f\uff0c\u5305\u62ec\u6bcf\u6761\u89c4\u5219\u7684\u5339\u914d\u5305\u6570\u91cf\u548c\u5339\u914d\u5b57\u8282\u6570<br \/>x\uff1a\u5728 v \u7684\u57fa\u7840\u4e0a\uff0c\u7981\u6b62\u81ea\u52a8\u5355\u4f4d\u6362\u7b97\uff08K\u3001M\uff09 vps\u4fa6\u63a2<br \/>n\uff1a\u53ea\u663e\u793aIP\u5730\u5740\u548c\u7aef\u53e3\u53f7\uff0c\u4e0d\u5c06ip\u89e3\u6790\u4e3a\u57df\u540d<\/p>\n<p>5\u3001\u5220\u9664\u5df2\u6dfb\u52a0\u7684iptables\u89c4\u5219<\/p>\n<p>\u5c06\u6240\u6709iptables\u4ee5\u5e8f\u53f7\u6807\u8bb0\u663e\u793a\uff0c\u6267\u884c\uff1a<\/p>\n<pre>iptables -L -n --line-numbers<\/pre>\n<p>\u6bd4\u5982\u8981\u5220\u9664INPUT\u91cc\u5e8f\u53f7\u4e3a8\u7684\u89c4\u5219\uff0c\u6267\u884c\uff1a<\/p>\n<pre>iptables -D INPUT 8<\/pre>\n<p>6\u3001iptables\u7684\u5f00\u673a\u542f\u52a8\u53ca\u89c4\u5219\u4fdd\u5b58<\/p>\n<p>CentOS\u4e0a\u53ef\u80fd\u4f1a\u5b58\u5728\u5b89\u88c5\u597diptables\u540e\uff0ciptables\u5e76\u4e0d\u5f00\u673a\u81ea\u542f\u52a8\uff0c\u53ef\u4ee5\u6267\u884c\u4e00\u4e0b\uff1a<\/p>\n<pre>chkconfig --level 345 iptables on<\/pre>\n<p>\u5c06\u5176\u52a0\u5165\u5f00\u673a\u542f\u52a8\u3002<\/p>\n<p>CentOS\u4e0a\u53ef\u4ee5\u6267\u884c\uff1aservice iptables save\u4fdd\u5b58\u89c4\u5219\u3002<\/p>\n<p><strong>Debian\/Ubuntu\u4e0aiptables\u662f\u4e0d\u4f1a\u4fdd\u5b58\u89c4\u5219\u7684\u3002<\/strong>\u9700\u8981\u6309\u5982\u4e0b\u6b65\u9aa4\u8fdb\u884c\uff0c\u8ba9\u7f51\u5361\u5173\u95ed\u662f\u4fdd\u5b58iptables\u89c4\u5219\uff0c\u542f\u52a8\u65f6\u52a0\u8f7diptables\u89c4\u5219\u3002<br \/>\u5982\u679c\u5f53\u524d\u7528\u6237\u4e0d\u662froot,\u5373\u4f7f\u4f7f\u7528\u4e86sudo,\u4e5f\u4f1a\u63d0\u793a\u4f60\u6ca1\u6709\u6743\u9650,\u65e0\u6cd5\u4fdd\u5b58,\u6240\u4ee5\u6267\u884c\u672c\u547d\u4ee4,\u4f60\u5fc5\u987b\u4f7f\u7528root\u7528\u6237.<br \/>\u53ef\u4ee5\u4f7f\u7528sudo -i\u5feb\u901f\u8f6c\u5230root,\u4f7f\u7528\u5b8c\u6210,\u8bf7\u53ca\u65f6\u4f7f\u7528su username\u5207\u6362\u5230\u666e\u901a\u5e10\u6237.<br \/>\u4e3a\u4e86\u91cd\u542f\u670d\u52a1\u5668\u540e,\u89c4\u5219\u81ea\u52a8\u52a0\u8f7d,\u6211\u4eec\u521b\u5efa\u5982\u4e0b\u6587\u4ef6:<\/p>\n<pre>sudo vim \/etc\/network\/if-pre-up.d\/iptables<\/pre>\n<pre>#!\/bin\/bash<br>iptables-save &gt; \/etc\/iptables.rules<\/pre>\n<p>\u6dfb\u52a0\u6267\u884c\u6743\u9650\u3002<\/p>\n<pre>chmod +x \/etc\/network\/if-pre-up.d\/iptables<\/pre>\n<p>\u9644\u4e0a\u57fa\u7840\u89c4\u5219\uff1a<\/p>\n<pre>*filter<br>:INPUT ACCEPT [106:85568]<br>:FORWARD ACCEPT [0:0]<br>:OUTPUT ACCEPT [188:168166]<br>:RH-Firewall-1-INPUT - [0:0]<br>#\u5141\u8bb8\u672c\u5730\u56de\u73af\u63a5\u53e3(\u5373\u8fd0\u884c\u672c\u673a\u8bbf\u95ee\u672c\u673a)<br>-A INPUT -s 127.0.0.1 -d 127.0.0.1 -j ACCEPT<br>#\u5141\u8bb8\u5df2\u5efa\u7acb\u7684\u6216\u76f8\u5173\u8fde\u7684\u901a\u884c<br>-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT<br>#\u5141\u8bb8\u6240\u6709\u672c\u673a\u5411\u5916\u7684\u8bbf\u95ee<br>-A OUTPUT -j ACCEPT<br>#\u5141\u8bb8PPTP\u62e8\u53f7\u7ffb\u5899<br>-A INPUT -p tcp -m tcp --dport 1723 -j ACCEPT<br>#\u4ec5\u7279\u5b9a\u4e3b\u673a\u8bbf\u95eeRsync\u6570\u636e\u540c\u6b65\u670d\u52a1<br>-A INPUT -s 8.8.8.8\/32 -p tcp -m tcp --dport 873 -j ACCEPT<br>#\u4ec5\u7279\u5b9a\u4e3b\u673a\u8bbf\u95eeWDCP\u7ba1\u7406\u7cfb\u7edf<br>-A INPUT -s 6.6.6.6\/32 -p tcp -m tcp --dport 8080 -j ACCEPT<br>#\u5141\u8bb8\u8bbf\u95eeSSH<br>-A INPUT -p tcp -m tcp --dport 1622 -j ACCEPT<br>#\u5141\u8bb8\u8bbf\u95eeFTP<br>-A INPUT -p tcp -m tcp --dport 21 -j ACCEPT<br>-A INPUT -p tcp -m tcp --dport 20 -j ACCEPT<br>#\u5141\u8bb8\u8bbf\u95ee\u7f51\u7ad9\u670d\u52a1<br>-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT<br>#\u7981\u6b62\u6240\u6709\u672a\u7ecf\u5141\u8bb8\u7684\u8fde\u63a5<br>-A INPUT -p tcp -j DROP<br>#\u6ce8\u610f\uff1a\u5982\u679c22\u7aef\u53e3\u672a\u52a0\u5165\u5141\u8bb8\u89c4\u5219\uff0cSSH\u94fe\u63a5\u4f1a\u76f4\u63a5\u65ad\u5f00\u3002<br>#-A INPUT -j REJECT<br>#-A FORWARD -j REJECT<br>COMMIT<br><\/pre>\n<p>\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e0b\u65b9\u6cd5\u76f4\u63a5\u8f7d\u5165\uff1a<br \/>1\u3001\u590d\u5236\u4e0a\u9762\u7684\u89c4\u5219\u7c98\u8d34\u5230\u8fd9\u91cc,\u4fdd\u5b58\u672c\u6587\u4ef6<\/p>\n<pre>sudo vim \/etc\/iptables.test.rules<\/pre>\n<p>2\u3001\u628a\u672c\u89c4\u5219\u52a0\u8f7d,\u4f7f\u4e4b\u751f\u6548,\u6ce8\u610f,iptables\u4e0d\u9700\u8981\u91cd\u542f,\u52a0\u8f7d\u4e00\u6b21\u89c4\u5219\u5c31\u6210\u4e86<\/p>\n<pre>sudo iptables-restore < \/etc\/iptables.test.rules<\/pre>\n<p>3\u3001\u67e5\u770b\u6700\u65b0\u7684\u914d\u7f6e,\u5e94\u8be5\u6240\u6709\u7684\u8bbe\u7f6e\u90fd\u751f\u6548\u4e86.<\/p>\n<pre>sudo iptables -L -n<\/pre>\n<p>4\u3001\u4fdd\u5b58\u751f\u6548\u7684\u914d\u7f6e,\u8ba9\u7cfb\u7edf\u91cd\u542f\u7684\u65f6\u5019\u81ea\u52a8\u52a0\u8f7d\u6709\u6548\u914d\u7f6e\uff08iptables\u63d0\u4f9b\u4e86\u4fdd\u5b58\u5f53\u524d\u8fd0\u884c\u7684\u89c4\u5219\u529f\u80fd\uff09<\/p>\n<pre>iptables-save > \/etc\/iptables.rules<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>iptables\u662fLinux\u4e0a\u5e38\u7528\u7684\u9632\u706b\u5899\u8f6f\u4ef6\uff0c\u4e00\u822cVPS\u7cfb\u7edf\u91cc\u9762\u9ed8\u8ba4\u90fd\u6709\u96c6\u6210\u3002 1\u3001\u5b89\u88c5iptables\u9632\u706b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-975","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.huzs.top\/index.php?rest_route=\/wp\/v2\/posts\/975","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.huzs.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.huzs.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.huzs.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.huzs.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=975"}],"version-history":[{"count":2,"href":"https:\/\/www.huzs.top\/index.php?rest_route=\/wp\/v2\/posts\/975\/revisions"}],"predecessor-version":[{"id":1991,"href":"https:\/\/www.huzs.top\/index.php?rest_route=\/wp\/v2\/posts\/975\/revisions\/1991"}],"wp:attachment":[{"href":"https:\/\/www.huzs.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.huzs.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.huzs.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}