{"id":77298,"date":"2020-04-10T01:42:31","date_gmt":"2020-04-09T23:42:31","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/kak-ustanovit-i-ispolzovat-aide-advanced-intrusion-detection-environment-v-centos-8"},"modified":"2020-04-10T01:42:31","modified_gmt":"2020-04-09T23:42:31","slug":"kak-ustanovit-i-ispolzovat-aide-advanced-intrusion-detection-environment-v-centos-8","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/kak-ustanovit-i-ispolzovat-aide-advanced-intrusion-detection-environment-v-centos-8","title":{"rendered":"Kuidas installida ja kasutada AIDE (Advanced Intrusion Detection Environment) CentOS 8-s","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><i><b>Kursuse alguse eel\u00f5htul <noindex><a rel=\"nofollow\" href=\"https:\/\/otus.pw\/BztB\/\">\u201eLinuxi administraator\u201c<\/a><\/noindex> valmistasime huvitava materjali t\u00f5lke.<\/b><\/i><\/p>\n<p><img decoding=\"async\" alt=\"Kuidas installida ja kasutada AIDE (Advanced Intrusion Detection Environment) CentOS 8-s\" src=\"\/wp-content\/uploads\/2020\/04\/e0f652f377fb48798444f1db1de5a376.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nAIDE t\u00e4histab \"Advanced Intrusion Detection Environment\" (t\u00e4iustatud sissetungi avastamise keskkond) \u2014 see on \u00fcks populaarsemaid s\u00fcsteeme Linuxi p\u00f5histe operatsioonis\u00fcsteemide muudatuste j\u00e4lgimiseks. AIDE-d kasutatakse pahavara, viiruste ja volitamata toimingute avastamiseks. Failide terviklikkuse kontrollimiseks ja sissetungide avastamiseks loob AIDE andmebaasi failide teabe kohta ning v\u00f5rdleb s\u00fcsteemi praegust seisundit selle andmebaasiga. AIDE aitab v\u00e4hendada juhtumite uurimise aega, keskendudes muudetud failidele.<\/p>\n<p>AIDE v\u00f5imalused:<\/p>\n<ul>\n<li>Toetab erinevaid faili atribuute, sealhulgas: faili t\u00fc\u00fcp, inode, uid, gid, \u00f5igused, linkide arv, mtime, ctime ja atime.<\/li>\n<li>Toetab Gzip-i tihendust, SELinux-i, XAttrs-i, Posix ACL-i ja failis\u00fcsteemi atribuute.<\/li>\n<li>Toetab erinevaid algoritme, sealhulgas md5, sha1, sha256, sha512, rmd160, crc32 jne.<\/li>\n<li>Saadab teateid e-posti teel.<\/li>\n<\/ul>\n<p>\nSelles artiklis vaatleme, kuidas AIDE-d installida ja kasutada sissetungide avastamiseks CentOS 8-s.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h3>Eeltingimused<\/h3>\n<p><\/p>\n<ul>\n<li>Server, mis t\u00f6\u00f6tab CentOS 8, minimaalne m\u00e4lu 2 GB.<\/li>\n<li>root-juurdep\u00e4\u00e4s<\/li>\n<\/ul>\n<p><\/p>\n<h3>Alustame<\/h3>\n<p>\nEsmalt soovitatakse s\u00fcsteem uuendada. Selleks t\u00e4itke j\u00e4rgmine k\u00e4sk.<\/p>\n<pre><code class=\"bash\">dnf update -y<\/code><\/pre>\n<p>\nP\u00e4rast uuendamist taask\u00e4ivitage s\u00fcsteem, et muudatused j\u00f5ustuksid.<\/p>\n<h3>AIDE paigaldamine<\/h3>\n<p>\nAIDE on saadaval CentOS 8 vaikerepositoriumis. Saate selle h\u00f5lpsasti paigaldada, t\u00e4ites j\u00e4rgmise k\u00e4sku:<\/p>\n<pre><code class=\"bash\">dnf install aide -y<\/code><\/pre>\n<p>\nP\u00e4rast paigalduse l\u00f5petamist saab AIDE versiooni vaadata j\u00e4rgmise k\u00e4sku abil:<\/p>\n<pre><code class=\"bash\">aide --version<\/code><\/pre>\n<p>\nTe peaksite n\u00e4gema j\u00e4rgmist:<\/p>\n<pre><code class=\"bash\">Aide 0.16\n\nKokku pandud j\u00e4rgmiste valikutega:\n\nWITH_MMAP\nWITH_PCRE\nWITH_POSIX_ACL\nWITH_SELINUX\nWITH_XATTR\nWITH_E2FSATTRS\nWITH_LSTAT64\nWITH_READDIR64\nWITH_ZLIB\nWITH_CURL\nWITH_GCRYPT\nWITH_AUDIT\nCONFIG_FILE = \"\/etc\/aide.conf\"<\/code><\/pre>\n<p>\nSaadaval olevad parameetrid <code>aide<\/code> v\u00f5ib vaadata j\u00e4rgmisel viisil:<\/p>\n<pre><code class=\"bash\">aide --help<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Kuidas installida ja kasutada AIDE (Advanced Intrusion Detection Environment) CentOS 8-s\" src=\"\/wp-content\/uploads\/2020\/04\/b85d16149448ab22bb6b09ee66bf5bc8.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<\/p>\n<h3>Andmebaasi loomine ja algatamine<\/h3>\n<p>\nEsimene asi, mida p\u00e4rast AIDE paigaldamist teha, on selle algatamine. Algatamine t\u00e4hendab andmebaasi (serveri k\u00f5igi failide ja kataloogide hetkeseisu) loomist.<\/p>\n<p>Andmebaasi algatamiseks t\u00e4itke j\u00e4rgmine k\u00e4sk:<\/p>\n<pre><code class=\"bash\">aide --init<\/code><\/pre>\n<p>\nTe peaksite n\u00e4gema j\u00e4rgmist:<\/p>\n<pre><code class=\"bash\">Algusaeg: 2020-01-16 03:03:19 -0500 (AIDE 0.16)\nAIDE initsialiseerib andmebaasi failis \/var\/lib\/aide\/aide.db.new.gz\n\nKirjeid kokku:\t49472\n\n---------------------------------------------------\n(uncompressed) andmebaasi atribuudid:\n---------------------------------------------------\n\n\/var\/lib\/aide\/aide.db.new.gz\n  MD5      : 4N79P7hPE2uxJJ1o7na9sA==\n  SHA1     : Ic2XBj50MKiPd1UGrtcUk4LGs0M=\n  RMD160   : rHMMy5WwHVb9TGUc+TBHFHsPCrk=\n  TIGER    : vkb2bvB1r7DbT3n6d1qYVfDzrNCzTkI0\n  SHA256   : tW3KmjcDef2gNXYqnOPT1l0gDFd0tBh9\n             xWXT2iaEHgQ=\n  SHA512   : VPMRQnz72+JRgNQhL16dxQC9c+GiYB8g\n             uZp6uZNqTvTdxw+w\/IYDSanTtt\/fEkiI\n             nDw6lgDNI\/ls2esijukliQ==\n\n\nL\u00f5ppaeg: 2020-01-16 03:03:44 -0500 (t\u00e4itmise aeg: 0m 25s)<\/code><\/pre>\n<p>\n\u00dclaltoodud k\u00e4sk loob uue andmebaasi <code>aide.db.new.gz<\/code> kaustas <code>\/var\/lib\/aide<\/code>. Seda saab vaadata j\u00e4rgmist k\u00e4sku kasutades:<\/p>\n<pre><code class=\"bash\">ls -l \/var\/lib\/aide<\/code><\/pre>\n<p>\nTulemus:<\/p>\n<pre><code class=\"bash\">total 2800\n-rw------- 1 root root 2863809 Jan 16 03:03 aide.db.new.gz<\/code><\/pre>\n<p>\nAIDE ei hakka seda uut andmebaasifaili kasutama, kuni seda ei nimetata \u00fcmber <code>aide.db.gz<\/code>. Seda saab teha j\u00e4rgmiselt:<\/p>\n<pre><code class=\"bash\">mv \/var\/lib\/aide\/aide.db.new.gz \/var\/lib\/aide\/aide.db.gz<\/code><\/pre>\n<p>\nSoovitatav on aeg-ajalt seda andmebaasi uuendada, et tagada vajalike muudatuste j\u00e4lgimine. <\/p>\n<p>Andmebaasi asukohta saab muuta, muutes parameetrit <code>DBDIR<\/code> failis <code>\/etc\/aide.conf<\/code>.<\/p>\n<h3>Kontrolli k\u00e4ivitamine<\/h3>\n<p>\nN\u00fc\u00fcd on AIDE valmis uue andmebaasi kasutamiseks. K\u00e4ivita esimene AIDE kontroll, tegemata mingeid muudatusi:<\/p>\n<pre><code class=\"bash\">aide --check<\/code><\/pre>\n<p>\nSelle k\u00e4su t\u00e4itmine v\u00f5tab aega olenevalt teie failis\u00fcsteemi suurusest ja serveri m\u00e4lu mahust. P\u00e4rast kontrolli l\u00f5ppu peaksite n\u00e4gema j\u00e4rgmist:<\/p>\n<pre><code class=\"bash\">K\u00e4ivitusaeg: 2020-01-16 03:05:07 -0500 (AIDE 0.16)\nAIDE ei leidnud andmebaasi ja failis\u00fcsteemi vahel mingeid erinevusi. N\u00e4eb hea v\u00e4lja!!<\/code><\/pre>\n<p>\n\u00dclaltoodud v\u00e4ljund n\u00e4itab, et k\u00f5ik failid ja kataloogid vastavad AIDE andmebaasile.<\/p>\n<h3>Testime AIDE-d<\/h3>\n<p>\nVaikimisi AIDE ei j\u00e4lgi Apache'i vaikimisi juurkatalooge <code>\/var\/www\/html.<\/code> Kohandame AIDE-d selle j\u00e4lgimiseks. Selleks tuleb muuta faili <code>\/etc\/aide.conf<\/code>.<\/p>\n<pre><code class=\"bash\">nano \/etc\/aide.conf<\/code><\/pre>\n<p>\nLisage rea kohale <code>\"\/root\/CONTENT_EX\"<\/code> j\u00e4rgmise:<\/p>\n<pre><code class=\"bash\">\/var\/www\/html\/ CONTENT_EX<\/code><\/pre>\n<p>\nJ\u00e4rgmiseks looge fail <code>aide.txt<\/code> kaustas <code>\/var\/www\/html\/<\/code>, kasutades j\u00e4rgmist k\u00e4sku:<\/p>\n<pre><code class=\"bash\">echo \"Test AIDE\" &gt; \/var\/www\/html\/aide.txt<\/code><\/pre>\n<p>\nN\u00fc\u00fcd k\u00e4ivitage AIDE kontroll ja veenduge, et loodud fail tuvastatakse.<\/p>\n<pre><code class=\"bash\">aide --check<\/code><\/pre>\n<p>\nTe peaksite n\u00e4gema j\u00e4rgmist:<\/p>\n<pre><code class=\"bash\">K\u00e4ivitusaeg: 2020-01-16 03:09:40 -0500 (AIDE 0.16)\nAIDE leidis erinevusi andmebaasi ja failis\u00fcsteemi vahel!!\n\nKokkuv\u00f5te:\n  Kokku sisenemiste arv:\t49475\n  Lisatud sisenemised:\t\t1\n  Eemaldatud sisenemised:\t\t0\n  Muudetud sisenemised:\t\t0\n\n---------------------------------------------------\nLisatud sisenemised:\n---------------------------------------------------\n\nf++++++++++++++++: \/var\/www\/html\/aide.txt<\/code><\/pre>\n<p>\nN\u00e4eme, et loodud fail on tuvastatud <code>aide.txt<\/code>.<br \/>\nP\u00e4rast tuvastatud muudatuste anal\u00fc\u00fcsimist uuendage AIDE andmebaasi.<\/p>\n<pre><code class=\"bash\">aide --update<\/code><\/pre>\n<p>\nP\u00e4rast uuendamist n\u00e4ete j\u00e4rgmist:<\/p>\n<pre><code class=\"bash\">Algus timestamp: 2020-01-16 03:10:41 -0500 (AIDE 0.16)\nAIDE leidis erinevusi andmebaasi ja failis\u00fcsteemi vahel!!\nUus AIDE andmebaas on kirjutatud failile \/var\/lib\/aide\/aide.db.new.gz\n\nKokkuv\u00f5te:\n  Kokku sisenemiste arvu:\t49475\n  Lisatud sisenemised:\t1\n  Eemaldatud sisenemised:\t0\n  Muudetud sisenemised:\t0\n\n---------------------------------------------------\nLisatud sisenemised:\n---------------------------------------------------\n\nf++++++++++++++++: \/var\/www\/html\/aide.txt<\/code><\/pre>\n<p>\n\u00dclaltoodud k\u00e4sk loob uue andmebaasi <code>aide.db.new.gz<\/code> kaustas <\/p>\n<pre><code class=\"bash\">\/var\/lib\/aide\/<\/code><\/pre>\n<p>\nSaate seda n\u00e4ha j\u00e4rgmise k\u00e4su abil:<\/p>\n<pre><code class=\"bash\">ls -l \/var\/lib\/aide\/<\/code><\/pre>\n<p>\nTulemus:<\/p>\n<pre><code class=\"bash\">kokku 5600\n-rw------- 1 root root 2864012 Jan 16 03:09 aide.db.gz\n-rw------- 1 root root 2864100 Jan 16 03:11 aide.db.new.gz<\/code><\/pre>\n<p>\nN\u00fc\u00fcd nimeta uus andmebaas uuesti, et AIDE saaks edaspidiste muudatuste j\u00e4lgimiseks kasutada uut andmebaasi. Uuesti nimetamiseks v\u00f5id teha j\u00e4rgmist:<\/p>\n<pre><code class=\"bash\">mv \/var\/lib\/aide\/aide.db.new.gz \/var\/lib\/aide\/aide.db.gz<\/code><\/pre>\n<p>\nK\u00e4ivita kontroll uuesti, et veenduda, et AIDE kasutab uut andmebaasi:<\/p>\n<pre><code class=\"bash\">aide --check<\/code><\/pre>\n<p>\nSa peaksid n\u00e4gema j\u00e4rgmist:<\/p>\n<pre><code class=\"bash\">Algus timestamp: 2020-01-16 03:12:29 -0500 (AIDE 0.16)\nAIDE ei leidnud andmebaasi ja failis\u00fcsteemi vahel ERINEVUSI. N\u00e4eb hea v\u00e4lja!!<\/code><\/pre>\n<p><\/p>\n<h3>Automatiseerime kontrolli<\/h3>\n<p>\nSee on hea m\u00f5te - k\u00e4ivitada AIDE kontroll iga p\u00e4ev ja saata aruanne e-posti teel. Seda protsessi saab automatiseerida cron'i abil.<\/p>\n<pre><code class=\"bash\">nano \/etc\/crontab<\/code><\/pre>\n<p>\nK\u00e4ivitamiseks AIDE kontroll iga p\u00e4ev kell 10:15, lisa faili l\u00f5ppu j\u00e4rgmine rida:<\/p>\n<pre><code class=\"bash\">15 10 * * * root \/usr\/sbin\/aide --check<\/code><\/pre>\n<p>\nN\u00fc\u00fcd teavitab AIDE teid e-posti teel. E-kirju saab kontrollida j\u00e4rgmise k\u00e4suga:<\/p>\n<pre><code class=\"bash\">tail -f \/var\/mail\/root<\/code><\/pre>\n<p>\nAIDE logi saab vaadata j\u00e4rgmise k\u00e4sklusega:<\/p>\n<pre><code class=\"bash\">tail -f \/var\/log\/aide\/aide.log<\/code><\/pre>\n<p><\/p>\n<h3>Kokkuv\u00f5te<\/h3>\n<p>\nSelles artiklis \u00f5ppisite, kuidas kasutada AIDE-d failimuudatuste tuvastamiseks ja serverisse volitamata juurdep\u00e4\u00e4su tuvastamiseks. T\u00e4iendavate seadistuste jaoks saate muuta konfiguratsioonifaili \/etc\/aide.conf. Turvalisuse huvides on soovitatav hoida andmebaasi ja konfiguratsioonifaili lugemis\u00f5igustega seadmes. T\u00e4iendavat teavet leiate dokumentatsioonist. <noindex><a rel=\"nofollow\" href=\"https:\/\/access.redhat.com\/documentation\/en-us\/red_hat_enterprise_linux\/7\/html\/security_guide\/sec-using-aide\">AIDE Doc<\/a><\/noindex>.<\/p>\n<p>\n<b><noindex><a rel=\"nofollow\" href=\"https:\/\/otus.pw\/BztB\/\">Uuri kursuse kohta l\u00e4hemalt.<br \/>\n<\/a><\/noindex><\/b><\/p>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/otus\/blog\/496312\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u0435\u0434\u0434\u0432\u0435\u0440\u0438\u0438 \u0441\u0442\u0430\u0440\u0442\u0430 \u043a\u0443\u0440\u0441\u0430 \u00ab\u0410\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440 Linux\u00bb \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u0432\u043e\u0434 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u0433\u043e \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0430. AIDE \u0440\u0430\u0441\u0448\u0438\u0444\u0440\u043e\u0432\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u043a\u0430\u043a \u201cAdvanced Intrusion Detection Environment\u201d (\u0443\u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0432\u0442\u043e\u0440\u0436\u0435\u043d\u0438\u0439) \u2014 \u044d\u0442\u043e \u043e\u0434\u043d\u0430 \u0438\u0437 \u0441\u0430\u043c\u044b\u0445 \u043f\u043e\u043f\u0443\u043b\u044f\u0440\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u0434\u043b\u044f \u043c\u043e\u043d\u0438\u0442\u043e\u0440\u0438\u043d\u0433\u0430 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0432 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u043d\u0430 \u0431\u0430\u0437\u0435 Linux. AIDE \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u0437\u0430\u0449\u0438\u0442\u044b \u043e\u0442 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u044b\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c, \u0432\u0438\u0440\u0443\u0441\u043e\u0432 \u0438 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u043d\u0435\u0441\u0430\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0439. \u0414\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438 \u0444\u0430\u0439\u043b\u043e\u0432 \u0438 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f 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