\n
\u4e91\u670d\u52a1\u5668centos\u7cfb\u7edf\u7981\u6b62Ping\u65b9\u6cd5\u3000\u3000\u6709\u65f6\u5019\u6839\u636e\u9700\u8981\uff08\u5982\u9632\u6b62\u653b\u51fb\uff09\uff0cLinux\u670d\u52a1\u5668\u7ba1\u7406\u5458\u53ef\u9650\u5236\u670d\u52a1\u5668\u7981\u6b62\u5176\u5b83\u7528\u6237Ping\u3002\u540c\u65f6\u53c8\u4fdd\u8bc1Linux\u670d\u52a1\u5668\u53c8\u53ef\u4ee5Ping\u5176\u5b83\u670d\u52a1\u5668\u3002<\/p>\n<\/p>\n
\u672c\u6587\u63d0\u4f9b\u4e24\u79cd\u7981Ping\u65b9\u6cd5<\/p>\n<\/p>\n
1\u3001\u901a\u8fc7\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u3000\u3000\u8fd9\u4e2a\u65b9\u6cd5\u9700\u8981ROOT\u6743\u9650\uff0c\u4e14\u8bbe\u7f6e\u6210\u529f\u540e\u522b\u4eba\u65e0\u6cd5Ping\u672c\u673a\uff0c\u672c\u673a\u4e5f\u65e0\u6cd5Ping\u4ed6\u4eba\uff0c\u53ef\u80fd\u4f1a\u5e26\u6765\u4e00\u70b9\u9ebb\u70e6\u3002<\/p>\n<\/p>\n
(1)\u76f4\u63a5\u4fee\u6539\/proc\/sys\/net\/ipv4\/icmp_echo_ignore_all \u6587\u4ef6\uff08\u8fd9\u4e2a\u6587\u4ef6\u9ed8\u8ba4\u662f\u53ea\u8bfb\u7684\uff09\u3000\u3000\u8be5\u6587\u4ef6\u53ea\u6709\u4e00\u4e2a\u6570\u503c\uff1a\u3000\u3000\u5c06\u8be5\u503c\u6539\u201c1\u201d\u540e\u4e3a\u5f00\u542f\uff08\u8fd0\u884c\uff09\u7981\u6b62PING\u3000\u3000\u5c06\u8be5\u503c\u6539\u201c0\u201d\u540e\u4e3a\u5173\u95ed\uff08\u505c\u6b62\uff09\u7981\u6b62PING<\/p>\n<\/p>\n
(2)\u76f4\u63a5\u8f93\u5165\u547d\u4ee4\u884c\u8bbe\u7f6e\uff08\u8fd9\u4e2a\u65b9\u6cd5\u9700\u8981ROOT\u6743\u9650\uff09\u3000\u3000\u76f4\u63a5\u5728\u547d\u4ee4\u884c\u8f93\u5165\u4ee5\u4e0b\u6307\u4ee4\u3000\u3000\u8fd0\u884c\uff1a\u7981\u6b62Ping\u3000\u3000echo 1 > \/proc\/sys\/net\/ipv4\/icmp_echo_igore_all\u3000\u3000\u505c\u6b62\uff1a\u7981\u6b62Ping\u3000\u3000echo 0 > \/proc\/sys\/net\/ipv4\/icmp_echo_igore_all\u3000\u3000 \u7ecf\u6d4b\u8bd5\u4ee5\u4e0a\u65b9\u6cd5\u5728OpenVZ\u7684VPS\uff08CentOS 5.5\u30015.6\uff09\u8bbe\u7f6e\u5931\u8d25\uff0c\u5176\u5b83\u627f\u8f7d\u65b9\u5f0f\u7684\u7cfb\u7edf\u6682\u65e0\u6761\u4ef6\u6d4b\u8bd5\uff08\u5982\u56fe\uff09\u3000\u3000\u9519\u8bef\u63d0\u793a\uff1a\u4e0d\u5141\u8bb8\u7684\u64cd\u4f5c(Operation not permitted)\u3000\u3000\u9644\uff1a\u8bbe\u7f6e\u5f00\u673a\u81ea\u52a8\u7981\u6b62Ping\u65b9\u6cd5\u3000\u3000\u60f3\u5f00\u673a\u540e\u7acb\u5373\u7981\u6b62ping\u54cd\u5e94\uff0c\u5c06\u8fd0\u884c\u8bed\u53e5\u6dfb\u52a0\u5230\/etc\/rc.d\/rc.local\u5373\u53ef\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528iptables\u9650\u5236\uff08\u63a8\u8350\uff09\u3000\u3000\u8fd9\u4e2a\u65b9\u6cd5\u5728OpenVZ\u4e0bVPS\u3001\u4e5f\u5728\u865a\u62df\u673a\u4e2d\u6d4b\u8bd5\u901a\u8fc7\uff0c\u7981\u6b62\u4ed6\u4ebaPing\u672c\u673a\u7684\u540c\u65f6\uff0c\u672c\u673a\u4e5f\u53ef\u4ee5Ping\u4ed6\u4eba\u3002<\/p>\n<\/p>\n
(1)\u8bbe\u7f6e\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u5728SSH\u4e2d\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4\uff0c\u56de\u8f66\u540e\u76f4\u63a5\u751f\u6548\u65e0\u9700\u91cd\u542fiptables\u3002<\/p>\n
iptables -A INPUT -p icmp –icmp-type 8 -s 0\/0 -j DROP<\/p>\n
\u4ee5\u4e0a\u64cd\u4f5c\u662f\u5229\u7528iptables\u4e22\u5f03\u6389\u6765\u81ea\u5916\u7f51\u8bf7\u6c42\u7684ICMP\u5305\uff0c\u8fbe\u5230\u7981Ping\u7684\u6548\u679c\u3002\u53cd\u4e4b\u8bf7\u770b\u4e0b\u9762\u3002<\/p>\n<\/p>\n
(2)\u89e3\u9664\u8bbe\u7f6e\u65b9\u6cd5\uff08\u5373\u5220\u9664\u672c\u89c4\u5219\uff09<\/p>\n
iptables -D INPUT -p icmp –icmp-type 8 -s 0\/0 -j DROP<\/p>\n
\u58f0\u660e\uff1a\u6587\u7ae0\u6765\u81ea\u7f51\u7edc\u8f6c\u8f7d\uff0c\u82e5\u65e0\u610f\u4e2d\u6709\u4fb5\u72af\u60a8\u6743\u76ca\u7684\u4fe1\u606f\uff0c\u8bf7\u8054\u7cfb\u6211\u4eec\uff0c\u6211\u4eec\u4f1a\u5728\u7b2c\u4e00\u65f6\u95f4\u5220\u9664\uff01 <\/p>\n<\/p>\n
\u66f4\u591a\u5173\u4e8e\u4e91\u670d\u52a1\u5668\uff0c\u57df\u540d<\/a><\/span>\u6ce8\u518c\uff0c\u865a\u62df\u4e3b\u673a\u7684\u95ee\u9898\uff0c\u8bf7\u8bbf\u95ee\u57a6\u6d3e\u79d1\u6280<\/a><\/span>\u5b98\u7f51\uff1awww.kenpai.com<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":" \u4e91\u670d\u52a1\u5668centos\u7cfb\u7edf\u7981\u6b62Ping\u65b9\u6cd5 \u6709\u65f6\u5019\u6839\u636e\u9700\u8981\uff08\u5982\u9632\u6b62\u653b\u51fb\uff09\uff0cLinux\u670d\u52a1\u5668\u7ba1\u7406\u5458\u53ef\u9650\u5236\u670d\u52a1\u5668\u7981\u6b62\u5176\u5b83\u7528\u6237Ping\u3002\u540c\u65f6\u53c8\u4fdd\u8bc1L<\/p>\n","protected":false},"author":2,"featured_media":4349,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3322],"tags":[4052],"class_list":["post-5378","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ktougao","tag-centosping"],"_links":{"self":[{"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/posts\/5378","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/comments?post=5378"}],"version-history":[{"count":0,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/posts\/5378\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/media\/4349"}],"wp:attachment":[{"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/media?parent=5378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/categories?post=5378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kenpai.com\/cms\/wp-json\/wp\/v2\/tags?post=5378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}