{"id":283,"date":"2017-10-12T15:59:23","date_gmt":"2017-10-12T06:59:23","guid":{"rendered":"https:\/\/www.crestboz.co.jp\/techblog\/?p=283"},"modified":"2020-04-20T15:46:05","modified_gmt":"2020-04-20T06:46:05","slug":"cloudflare%e3%81%aeip%e3%82%a2%e3%83%89%e3%83%ac%e3%82%b9%e3%82%92%e8%87%aa%e5%8b%95%e7%9a%84%e3%81%abiptables%e3%81%ab%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.crestboz.co.jp\/techblog\/archives\/283\/","title":{"rendered":"Cloudflare\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u81ea\u52d5\u7684\u306biptables\u306b\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p><a href=\"https:\/\/www.cloudflare.com\/\" rel=\"noopener\" target=\"_blank\"class=\"external\">Cloudflare<\/a> \u3068\u306f\u3001\u7121\u6599\u3067\u7c21\u5358\u306b\u4f7f\u3048\u308bCDN\uff08\u30b3\u30f3\u30c6\u30f3\u30c4\u30fb\u30c7\u30ea\u30d0\u30ea\u30fc\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff09\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002<br \/>\nCloudflare\u3092\u5c0e\u5165\u3059\u308b\u3068\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u3001\u3059\u3079\u3066Cloudflare\u7d4c\u7531\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u306eiptables\u306e\u8a2d\u5b9a\u3067\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u3078\u306eHTTP\u3068HTTPS\u306e\u30a2\u30af\u30bb\u30b9\u3092Cloudflare\u306eIP\u30a2\u30c9\u30ec\u30b9\u306b\u5236\u9650\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u3001Cloudflare\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u81ea\u52d5\u7684\u306b\u53d6\u5f97\u3057\u3066\u3001iptables\u306b\u8a2d\u5b9a\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<p>\u307e\u305a\u3001Cloudflare\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u3001 <a href=\"https:\/\/www.cloudflare.com\/ips\/\" rel=\"noopener noreferrer\" target=\"_blank\" class=\"external\">Cloudflare\u306e\u300cIP Ranges\u300d\u306e\u30da\u30fc\u30b8<\/a> \u306b\u8f09\u3063\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u30da\u30fc\u30b8\u306b\u3042\u308b\u901a\u308a\u3001IPv4\u306e\u30a2\u30c9\u30ec\u30b9\u306e\u30ea\u30b9\u30c8\u3060\u3051\u306e\u30da\u30fc\u30b8\u304c <a href=\"https:\/\/www.cloudflare.com\/ips-v4\" rel=\"noopener noreferrer\" target=\"_blank\" class=\"external\">https:\/\/www.cloudflare.com\/ips-v4<\/a> \u306b\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306b\u3001IP\u30a2\u30c9\u30ec\u30b9\u306e\u30ea\u30b9\u30c8\u3092\u53d6\u5f97\u3057\u3066\u3001iptables\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5\u304c\u3001Cloudflare\u306e\u30d6\u30ed\u30b0\u8a18\u4e8b\u300c<a href=\"https:\/\/support.cloudflare.com\/hc\/en-us\/articles\/200169166-How-do-I-whitelist-Cloudflare-s-IP-addresses-in-iptables-\" rel=\"noopener noreferrer\" target=\"_blank\" class=\"external\">How do I whitelist Cloudflare&#8217;s IP addresses in iptables?<\/a>\u300d\u306b\u8f09\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u4eca\u56de\u306f\u3001\u305d\u306e\u30d6\u30ed\u30b0\u306b\u3042\u308b\u65b9\u6cd5\u3067\u306f\u306a\u304f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u4f5c\u6210\u3057\u3066\u3001\u8a2d\u5b9a\u3057\u307e\u3057\u305f\u3002<\/p>\n<pre class=\"nums:false lang:default mark:29-46 decode:true \" >#!\/bin\/bash\r\n\r\niptables -F\r\niptables -X\r\n\r\n## Deafult Rule ##################################################\r\niptables -P INPUT DROP\r\niptables -P OUTPUT DROP\r\niptables -P FORWARD DROP\r\n\r\n\r\n## OUTPUT ########################################################\r\niptables -A OUTPUT -j ACCEPT\r\n\r\n\r\n## INPUT #########################################################\r\n\r\n## ALLOW ESTABLISHED and RELATED\r\niptables -A INPUT -m state --state ESTABLISHED -j ACCEPT\r\niptables -A INPUT -m state --state RELATED     -j ACCEPT\r\n\r\n## loopback\r\niptables -A INPUT -i lo -j ACCEPT\r\n\r\n## trusted ip\r\niptables -A INPUT -s 192.168.1.2 -j ACCEPT\r\n\r\n## http, https\r\ncloudflare_ipsv4=\"https:\/\/www.cloudflare.com\/ips-v4\"\r\nipranges=()\r\n\r\nfor ip in $(curl -s ${cloudflare_ipsv4});\r\ndo\r\n    if [[ $ip =~ ^[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}\/[0-9]{1,2} ]]; then\r\n        ipranges+=($ip)\r\n    fi\r\ndone\r\n\r\nif [ ${#ipranges[*]} -eq 0 ]; then\r\n    iptables -A INPUT -p tcp -m multiport --dports http,https -j ACCEPT\r\nelse\r\n    for ip in \"${ipranges[@]}\";\r\n    do\r\n        iptables -A INPUT -p tcp -m multiport --dports http,https -s $ip -j ACCEPT\r\n    done\r\nfi\r\n\r\n\r\n## Others\r\niptables -A INPUT -j DROP\r\n<\/pre>\n<p>\u53ef\u7528\u6027\u3092\u8003\u3048\u3066\u3001IP\u30a2\u30c9\u30ec\u30b9\u306e\u30ea\u30b9\u30c8\u306e\u53d6\u5f97\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u306f\u3001\u3059\u3079\u3066\u306eIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u306eHTTP\u3068HTTPS\u306e\u30a2\u30af\u30bb\u30b9\u3092\u8a31\u53ef\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u8a2d\u5b9a\u65b9\u6cd5\u306f\u3001\u4ee5\u524d\u306e\u8a18\u4e8b\u300c<a href=\"https:\/\/www.crestboz.co.jp\/techblog\/archives\/281\/\" rel=\"noopener noreferrer\" target=\"_blank\" class=\"external\">Debian\u3067\u306eiptables\u8a2d\u5b9a<\/a>\u300d\u306e\u901a\u308a\u306b\u884c\u3044\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cloudflare \u3068\u306f\u3001\u7121\u6599\u3067\u7c21\u5358\u306b\u4f7f\u3048\u308bCDN\uff08\u30b3\u30f3\u30c6\u30f3\u30c4\u30fb\u30c7\u30ea\u30d0\u30ea\u30fc\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff09\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002 Cloudflare\u3092\u5c0e\u5165\u3059\u308b\u3068\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u3001\u3059\u3079\u3066Cloudflare\u7d4c\u7531\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-283","post","type-post","status-publish","format-standard","hentry","category-not-classified","wpautop"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ 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\u3068\u306f\u3001\u7121\u6599\u3067\u7c21\u5358\u306b\u4f7f\u3048\u308bCDN\uff08\u30b3\u30f3\u30c6\u30f3\u30c4\u30fb\u30c7\u30ea\u30d0\u30ea\u30fc\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff09\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002 Cloudflare\u3092\u5c0e\u5165\u3059\u308b\u3068\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u3001\u3059\u3079\u3066Cloudflare\u7d4c\u7531\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.crestboz.co.jp\/techblog\/archives\/283\/\" \/>\n<meta property=\"og:site_name\" content=\"\u30af\u30ec\u30b9\u30c8\u30dc\u30a6\u30ba::\u6280\u8853\u8005\u30d6\u30ed\u30b0\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/crestboz\" \/>\n<meta property=\"article:published_time\" content=\"2017-10-12T06:59:23+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-04-20T06:46:05+00:00\" \/>\n<meta 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