{"id":467,"date":"2020-04-03T17:06:51","date_gmt":"2020-04-03T09:06:51","guid":{"rendered":"https:\/\/qtvz.com\/?p=467"},"modified":"2020-04-03T17:33:08","modified_gmt":"2020-04-03T09:33:08","slug":"centos7%e4%bf%ae%e5%a4%8d%e5%87%a0%e4%b8%aaicmp%e6%bc%8f%e6%b4%9e","status":"publish","type":"post","link":"https:\/\/qtvz.com\/467.html","title":{"rendered":"CentOS7\u4fee\u590d\u51e0\u4e2aICMP\u6f0f\u6d1e"},"content":{"rendered":"<!--wp-compress-html--><!--wp-compress-html no compression-->\n<h3>1.ICMP timestamp\u8bf7\u6c42\u54cd\u5e94\u6f0f\u6d1e<\/h3>\n\n\n<p>\u63cf\u8ff0\uff1a<br>\u8fdc\u7a0b\u4e3b\u673a\u4f1a\u56de\u590dICMP_TIMESTAMP\u67e5\u8be2\u5e76\u8fd4\u56de\u5b83\u4eec\u7cfb\u7edf\u7684\u5f53\u524d\u65f6\u95f4\u3002 \u8fd9\u53ef\u80fd\u5141\u8bb8<strong><em>\u8005<\/em><\/strong>\u4e00\u4e9b\u57fa\u4e8e\u65f6\u95f4\u8ba4\u8bc1\u7684\u534f\u8bae<br>\u4fee\u590d\uff1a<\/p>\n\n\n<pre class=\"wp-block-code\"><code>firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -p ICMP --icmp-type timestamp-request -m comment --comment \"deny ICMP timestamp\" -j DROP\nfirewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -p ICMP --icmp-type timestamp-reply -m comment --comment \"deny ICMP timestamp\" -j DROP<\/code><\/pre>\n\n\n<p>2.\u5141\u8bb8Traceroute\u63a2\u6d4b\u6f0f\u6d1e<\/p>\n\n\n<p> \u63cf\u8ff0\uff1a<br>\u672c\u63d2\u4ef6\u4f7f\u7528Traceroute\u63a2\u6d4b\u6765\u83b7\u53d6\u626b\u63cf\u5668\u4e0e\u8fdc\u7a0b\u4e3b\u673a\u4e4b\u95f4\u7684\u8def\u7531\u4fe1\u606f\u3002\u6216\u8005\u4e5f\u53ef\u4ee5\u5229\u7528\u8fd9\u4e9b\u4fe1\u606f\u6765\u4e86\u89e3\u76ee\u6807\u7f51\u7edc\u7684\u7f51\u7edc\u62d3\u6251<br>\u4fee\u590d\uff1a <\/p>\n\n\n<pre class=\"wp-block-code\"><code>firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -p ICMP --icmp-type 11 -m comment --comment \"deny traceroute\" -j DROP<\/code><\/pre>\n\n\n<p> \u6ce8\u610f\uff1a<br>\u4fee\u6539\u5b8c\u8bb0\u5f97reload\u4e0b <\/p>\n\n\n<pre class=\"wp-block-code\"><code>firewall-cmd --reload<\/code><\/pre>\n\n\n<p> \u67e5\u770b\u6dfb\u52a0\u7684\u89c4\u5219 <\/p>\n\n\n<pre class=\"wp-block-code\"><code>firewall-cmd --direct --get-all-rules<\/code><\/pre>\n<!--wp-compress-html no compression--><!--wp-compress-html-->","protected":false},"excerpt":{"rendered":"1.ICMP timestamp\u8bf7\u6c42\u54cd\u5e94\u6f0f\u6d1e \u63cf\u8ff0\uff1a\u8fdc\u7a0b\u4e3b\u673a\u4f1a\u56de\u590dICMP_TIMESTAMP\u67e5\u8be2\u5e76\u8fd4\u56de\u5b83\u4eec\u7cfb\u7edf\u7684\u5f53\u524d\u65f6\u95f4\u3002 \u8fd9\u53ef\u80fd\u5141\u8bb8\u8005\u4e00\u4e9b\u57fa\u4e8e\u65f6\u95f4\u8ba4\u8bc1\u7684\u534f\u8bae\u4fee\u590d\uff1a 2.\u5141\u8bb8Traceroute\u63a2\u6d4b \u00b7\u00b7\u00b7","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[77,4],"tags":[],"views":13468,"_links":{"self":[{"href":"https:\/\/qtvz.com\/api\/wp\/v2\/posts\/467"}],"collection":[{"href":"https:\/\/qtvz.com\/api\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qtvz.com\/api\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/comments?post=467"}],"version-history":[{"count":7,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/posts\/467\/revisions"}],"predecessor-version":[{"id":477,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/posts\/467\/revisions\/477"}],"wp:attachment":[{"href":"https:\/\/qtvz.com\/api\/wp\/v2\/media?parent=467"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/categories?post=467"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/tags?post=467"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}