为什么80%的码农都做不了架构师？>>> 
本文转载自 http://www.mr-fu.com/4532/
下面数组中罗列的都是对网站无实际意义的爬虫(crawler）、蜘蛛（spider）或机器人（bot）。
只要在HTTP_USER_AGENT发现下面数组中的关键词，就可以直接干掉了（百度、谷歌、360等能带来流量的蜘蛛已经排除，Yandex基本不会为中文网站带来流量，因此也被列入其中）。
此数组持续更新！数月以来，从未误杀！
$bad_spiders_array=array(
'Crawler','Barkrowler','CakePHP','GarlikCrawler','Go-http-client','ias_crawler','ICC-Crawler','PotPlayer',
'Riddler','Scrapy','WINAMP','viz/viz','ZXing','Castro','Jakarta Commons','ltx71','NativeHost',
'SalesIntelligent','Xenu Link Sleuth','Y!J-ASR','BUbiNG','CRAZYWEBCRAWLER','http Cnrdn',
'Lavf','NSPlayer','spray-can','stagefright','voltron','LibVLC','A6-Indexer','crawler4j',
'wsr-agent','DigitalPebble Crawler','MBCrawler','AhrefsBot','GrapeshotCrawler','proximic','SemrushBot',
'ahoy!','alkaline','ananzi','anthill','arachnophilia','arale','araneo','aretha','ariadne','arks','askjeeves',
'atn worldwide','auresys','backrub','big brother','bjaaland','blackwidow','bloodhound','calif','cassandra',
'christcrawler.com','churl','cienciaficcion.net','cmc/0.01','collective','combine system',
'computingsite robi/1.0','crawler.feedback','cusco','cyberspyder link test','katalog/index',
'die blinde kuh','digger','direct hit grabber','download express','dwcp','ebiness','e-collector',
'emacs-w3 search engine','esculapio','esther','evliya celebi','fastcrawler','felix ide','fetchrover',
'fido','fish search','fouineur','freecrawl','funnelweb','gazz','gcreep','getterroboplus puu',
'geturl','golem','grapnel/0.01 experiment','griffon','gromit','Gluten','hämähäkki','harvest','havindex',
'hi (html index) search','hku www octopus','ht://dig','html_analyzer','htmlgobble','hyper-decontextualizer',
'ia_archiver','ibm_planetwide','image.kapsi.net','imagelock','incywincy','informant','infoseek sidewinder',
'ingrid','inktomi slurp','inspector web','intelliagent','internet shinchakubin','iron33','israeli-search',
'javabee','jcrawler','jumpstation','katipo','kdd-explorer','kilroy','kit-fireball','labelgrabber','larbin',
'legs','link validator','linkscan','linkwalker','lockon','logo.gif crawler','lycos','mac wwwworm','magpie',
'marvin/infoseek','mattie','mediafox','merzscope','mindcrawler','mnogosearch search engine software',
'moget','monster','motor','muncher','muninn','muscat ferret','mwd.search','nec-meshexplorer','nederland.zoek',
'netcarta webmap engine','netmechanic','netscoop','newscan-online','nhse web forager','nomad',
'northern light gulliver','nzexplorer','objectssearch','occam','OOZBOT','openfind data gatherer','orb search',
'pack rat','pageboy','parasite','patric','pegasus','perlcrawler 1.0','pgp key agent','phpdig','piltdownman',
'pioneer','plumtreewebaccessor','poppi','popular iconoclast','raven search','roadhouse crawling system',
'robofox','robozilla','rules','scooter','search.aus-au.com','searchprocess','senrigan','sg-scout','shagseeker',
'sift','site searcher','site valet','sitetech-rover','skymob.com','slcrawler','sleek','snooper','suke',
'suntek search engine','sven','sygol','tach black widow','tarantula','templeton','the peregrinator',
'the web moose','the web wombat','the world wide web wanderer','the world wide web worm','titan','titin',
'ucsd crawl','udmsearch','unnamed','url check','valkyrie','verticrawl','victoria','vision-search',
'voyager','w3m2','w3mir','walhello appie','wallpaper (alias crawlpaper)','web core / roots',
'webcatcher','webcopy','webfetcher','webinator','weblayers','weblinker','weblog monitor',
'webmirror','webquest','webreaper','websnarf','webstolperer','webvac','webwalk','webwalker','webwatch',
'webzinger','wget','whatuseek winona','wild ferret web hopper','wired digital','wwwc ver',
'xget','daumoa','jobo','echo!','linkchecker','bloglines','twiceler','appie','sun4u','httrack','sisi',
'robi','webster pro','webster','zeus','scirus','picosearch','plucker','disco pump','gulliver','emailsiphon',
'teleport pro','fetch','pamuk','webcopier','webcapture','mass downloader','awv0.8d',
'crescent internet toolpak','webstripper','sitesucker','webdup','python-urllib','python',
'franklin locator','ck-sillydog','pockethttp','java','kototoi.org','teragramwebcrawler','vagabondo',
'nogoop-httpclient','myoperatb','myoperatb','accoona-ai-agent','arachmo','b-l-i-t-z-b-o-t','boitho.com-dc',
'cerberian drtrs','charlotte','converacrawler','cosmos','covario ids','dataparksearch','earthcom.info',
'fast enterprise crawler','fast-webcrawler','findlinks','g2crawler','holmes','htdig','iccrawler','ichiro',
'igdespyder','issuecrawler','l.webis','lwp-trivial','mabontland','magpie-crawler','mnogosearch','mogimogi',
'morning paper','mvaclient','netresearchserver','netseer crawler','newsgator','ng-search','nutchcvs',
'nymesis','oegp','orbiter','peew','pompos','postpost','pycurl','qseero','radian6','sandcrawler','sbider',
'scoutjet','scrubby','searchsight','seekbot','semanticdiscovery','sensis web crawler','shim-crawler','shopwiki',
'snappy','sqworm','stackrambler','teoma','tineye','truwogps','updated','vortex','vyu2','webcollage',
'websquash.com','wf84','womlpefactory','yacy','yahooseeker','yahooseeker-testing','yandeximages',
'yandexmetrika','yeti','yooglifetchagent','zyborg','wordpress','a6-indexer','wsr-agent',
'Microsoft Office','JDatabaseDriver','facebookexternalhit','The Knowledge AI','Twitterbot',
'VenusCrawler','aria2','GetCode','CCBot','NetTrack','Go-http-client','IAS crawler','POE-Component',
'VelenPublicWebCrawler','www.ru','Nutch Master Test','Wotbox','orion-semantics.com','lwp-request',
'ShortLinkTranslate','mj12bot','WinHttpRequest','Exabot','Auto Spider','Applebot','DuckDuckGo','SeznamBot',
'moatbot','DotBot','SurdotlyBot','28logsSpider','zgrab','Windows-Media-Player','spbot','Mail.RU_Bot',
'Backlink','SiteExplorer','SEOkicks','linkdexbot','Qwantify','DataXu','ExtLinksBot','gvfs/','evc-batch',
'Cliqzbot','YandexBot','YandexMobileBot','newspaper','Clickagy','Chicken laser','coccocbot',
'Microsoft Windows Network Diagnostics','spuhex.com','smtbot','Dataprovider','HybridBot','Sky-Wapproxy','SafeDNSBot',
'HatenaBookmark','Meta_Bot','ToutiaoSpider','HttpComponents','ips-agent','yandex.com/bots','(ziva)','Jersey',
'Auto Shell Spider','User-Agent','curl/','MPlayer','internal request','Grammarly','package','TrendsmapResolver',
'PaperLiBot','startmebot','WebFuck','GStreamer','httpsrc','AntennaPod','panscient.com','webscan',
'Screaming Frog','WFilter Live','trendictionbot','nsrbot','PlurkBot','Mojolicious','AlphaBot','tracemyfile',
'VCTestClient','heritrix','MiniRedir','Iframely','rest-client','Cappuccino','FirmsBot','BOT for JCE',
'Nimbostratus-Bot','Emacs-w3m','WordupinfoSearch','Dispatch','Paracrawl','Mr.4x3','axios','Typhoeus',
'tools.random','WhatCMSBot','InetURL','NetpeakCheckerBot','Goose','lua-resty','WhatWeb','special_archiver',
'XoviBot','Wappalyzer','OK-Search-Bot','abot','Mechanize','uipbot','GnowitNewsbot','PostmanRuntime','HoneyBee',
'gobuster','Bidtellect','Sonos','RankingBot','Uptimebot','Synapse','Re-re Studio','Mappy','Statastico',
'Linguee Bot','PocketImageCache','colly','YunSecurityBot','archive.org_bot','CheckMarkNetwork'
);服务器层面iptables推荐屏蔽的C类地址段：iptables -I INPUT -s 54.36.148.0/24 -j DROP
iptables -I INPUT -s 54.36.149.0/24 -j DROP
iptables -I INPUT -s 47.74.240.0/24 -j DROP
iptables -I INPUT -s 46.229.168.0/24 -j DROP
iptables-save > /etc/sysconfig/iptables
service iptables restart
1、54.36.148.*和54.36.149.*是AhrefsBot的IP段。
2、47.74.240.*是阿里云新加坡节点IP段，该ip段上有主机不间断地扫描网站根目录下面的.rar和.zip文件（类似/www.rar, /web.zip），且伪装成baiduspider
3、46.229.168.* 是SemRush bot的IP段
关注一个ip：51.55.248.7
这个ip总是伪造成baiduspider向首页发送POST请求
另一个IP：51.255.65.46
可能是AhrefsBot启用的新ip端：51.255.65.46 - Mozilla/5.0 (compatible; AhrefsBot/5.2; +http://ahrefs.com/robot/)
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