{"id":36245,"date":"2019-10-31T22:10:28","date_gmt":"2019-10-31T19:10:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novyj-bild-nemesida-waf-free-dlya-nginx\/"},"modified":"2019-10-31T22:10:28","modified_gmt":"2019-10-31T19:10:28","slug":"novyj-bild-nemesida-waf-free-dlya-nginx","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/administrirovanie\/novyj-bild-nemesida-waf-free-dlya-nginx","title":{"rendered":"Nova razli\u010dica Nemesida WAF Free za NGINX","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Nova razli\u010dica Nemesida WAF Free za NGINX\" src=\"\/wp-content\/uploads\/2019\/07\/6d684f498688b4aab26911f30c0394d6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nLani smo lansirali Nemesida WAF Free \u2014 dinami\u010dni modul za NGINX koji blokira napade na web aplikacije. Za razliku od komercijalne verzije koja se oslanja na ma\u0161insko u\u010denje, besplatna verzija analizira zahteve samo metodom potpisivanja.<\/p>\n<h3>Osobine izdanja Nemesida WAF 4.0.129<\/h3>\n<p>\nDo trenutnog izdanja, dinami\u010dni modul Nemesida WAF podr\u017eavao je samo Nginx Stable 1.12, 1.14 i 1.16. U novom izdanju dodata je podr\u0161ka za Nginx Mainline, po\u010dev\u0161i od 1.17, kao i Nginx Plus, po\u010dev\u0161i od 1.15.10 (R18).<\/p>\n<h3>Za\u0161to napraviti jo\u0161 jedan WAF?<\/h3>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nNAXSI i mod_security su verovatno najpopularniji besplatni WAF moduli, pri \u010demu se mod_security aktivno promovira od strane Nginxa, iako se prvobitno koristio samo u Apache2. Ova re\u0161enja su oba besplatna, imaju otvoren kod i mnogo korisnika \u0161irom sveta. Za mod_security su dostupni besplatni i komercijalni, po ceni od 500 dolara godi\u0161nje, setovi potpisa, a za NAXSI \u2014 besplatan set potpisa 'iz kutije', kao i dodatni setovi pravila poput doxsi.<\/p>\n<p>Ove godine smo testirali rad NAXSI i Nemesida WAF Free. Ukratko o rezultatima:<\/p>\n<ul>\n<li>NAXSI ne vr\u0161i dvostruki URL-decode u kola\u010di\u0107u.<\/li>\n<li>NAXSI je veoma dugotrajan za pode\u0161avanje \u2014 podrazumevane postavke pravila \u0107e blokirati veliki deo zahteva prilikom rada sa web aplikacijom (autentifikacija, ure\u0111ivanje profila ili materijala, u\u010destvovanje u anketama itd.) i potrebno je generisati liste izuzetaka, \u0161to negativno uti\u010de na bezbednost. Nemesida WAF Free, sa podrazumevanim pode\u0161avanjima, nije zabele\u017eila nijedno la\u017eno pozitivno tokom rada na sajtu.<\/li>\n<li>broj propu\u0161tenih napada kod NAXSI je vi\u0161estruko ve\u0107i itd.<\/li>\n<\/ul>\n<p>\nI pored nedostataka, NAXSI i mod_security imaju najmanje dve prednosti \u2014 otvoren kod i veliki broj korisnika. Podr\u017eavamo ideju otkrivanja izvornog koda, ali to ne mo\u017eemo da u\u010dinimo zbog mogu\u0107ih problema sa 'piraterijom' komercijalne verzije, ali kako bismo nadoknadili ovaj nedostatak \u2014 potpuno otkrivamo sadr\u017eaj seta potpisa. Cenimo privatnost i nudimo vam da se uverite u to li\u010dno pomo\u0107u proksi-<a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sl\/server\/dts-los-angeles\/\"   title=\"stre\u017enika\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3507\">stre\u017enika<\/a>.<\/p>\n<p>Posebna karakteristika Nemesida WAF Free:<\/p>\n<ul>\n<li>kvalitetna baza potpisa sa minimalnim brojem la\u017eno pozitivnih i la\u017eno negativnih rezultata.<\/li>\n<li>instalacija i a\u017euriranje iz repozitorijuma (brzo i prakti\u010dno);<\/li>\n<li>jednostavni i jasni doga\u0111aji o incidentima, a ne 'haos', kao kod NAXSI;<\/li>\n<li>popolnoma brezpla\u010dno, brez omejitev glede prometa, virtualnih gostiteljev itd.<\/li>\n<\/ul>\n<p>\nNa koncu bom navedel nekaj zahtevkov za oceno delovanja WAF (priporo\u010dljivo je uporabljati v vsaki od con: URL, ARGS, Headers &amp; Body):<\/p>\n<p><code>')) un\",\"ion se\",\"lect 1,2,3,4,5,6,7,8,9,0,11#\"]<br \/>\n')) union\/**\/select\/**\/1,\/**\/2,\/**\/3,\/**\/4,\/**\/5,\/**\/6,\/**\/7,\/**\/8,\/**\/9,\/**\/'some_text',\/**\/11#\"]<br \/>\nunion(select(1),2,3,4,5,6,7,8,9,0x70656e746573746974,11)#\"]<br \/>\n')) union+\n\/*!select*\/ (1),(2),(3),(4),(5),(6),(7),(8),(9),(0x70656e746573746974),(11)#\"]<br \/>\n')) uion*\\\/ seect*\\\/ (1),(2),(3),(4),(5),(6),(7),(8),(9.),(0x70656e746573746974),(11)#\"]<br \/>\n')) **union**select (1),(2),(3),(4),(5),(6),(7),(8),(9),(0x70656e746573746974),(11)#\"]<br \/>\n1807182982union<br \/>\nselect123456789%2some_text11<br \/>\ncat \/et?\/pa?swd<br \/>\ncat \/et'c\/pa'ss'wd<br \/>\ncat \/et*\/pa**wd<br \/>\ne'c'ho 'swd test pentest' |awk '{print \"cat \/etc\/pas\"$1}' |bas'h<br \/>\ncat \/etc\/passwd<br \/>\ncat$u+\/etc$u\/passwd$u<br \/>\n&lt;svg\/onload=alert()\/\/<\/code><\/p>\n<p>\u010ce zahtevki ne bodo blokirani, bo verjetno WAF pustil mimo tudi resni\u010dni napad. Pred uporabo primerov se prepri\u010dajte, da WAF ne blokira legitimnih zahtevkov.<br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/459976\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u0433\u043e\u0434\u0443 \u043c\u044b \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b\u0438 Nemesida WAF Free \u2014 \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043c\u043e\u0434\u0443\u043b\u044c \u0434\u043b\u044f NGINX, \u0431\u043b\u043e\u043a\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u0432\u0435\u0431-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f. \u0412 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 \u043a\u043e\u043c\u043c\u0435\u0440\u0447\u0435\u0441\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043d\u0430 \u0440\u0430\u0431\u043e\u0442\u0435 \u043c\u0430\u0448\u0438\u043d\u043d\u043e\u0433\u043e \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u044f, \u0431\u0435\u0441\u043f\u043b\u0430\u0442\u043d\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u0442 \u0437\u0430\u043f\u0440\u043e\u0441\u044b \u0442\u043e\u043b\u044c\u043a\u043e \u0441\u0438\u0433\u043d\u0430\u0442\u0443\u0440\u043d\u044b\u043c \u043c\u0435\u0442\u043e\u0434\u043e\u043c. \u041e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u0440\u0435\u043b\u0438\u0437\u0430 Nemesida WAF 4.0.129 \u0414\u043e \u0442\u0435\u043a\u0443\u0449\u0435\u0433\u043e \u0440\u0435\u043b\u0438\u0437\u0430 \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043c\u043e\u0434\u0443\u043b\u044c Nemesida WAF \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u043b \u0442\u043e\u043b\u044c\u043a\u043e Nginx Stable 1.12, 1.14 \u0438 1.16. \u0412 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":27112,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-36245","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u0433\u043e\u0434\u0443 \u043c\u044b \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b\u0438 Nemesida WAF Free \u2014.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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