{"id":5012,"date":"2020-12-03T18:49:29","date_gmt":"2020-12-03T21:49:29","guid":{"rendered":"https:\/\/blog.clusterweb.com.br\/?p=5012"},"modified":"2020-12-03T18:49:29","modified_gmt":"2020-12-03T21:49:29","slug":"zimbra-fail2ban","status":"publish","type":"post","link":"https:\/\/blog.clusterweb.com.br\/?p=5012","title":{"rendered":"Zimbra + Fail2ban"},"content":{"rendered":"<pre>Irei detalhar de forma bem pratica e funcional, pronto para j\u00e1 funcionar Fail2ban com Zimbra 8.8.x<\/pre>\n<ul>\n<li>\n<pre>Instale o fail2ban seguindo as instru\u00e7\u00f5es da sua distribui\u00e7\u00e3o \u2013 (Vers\u00e3o 0.9.6 pra cima)<\/pre>\n<\/li>\n<\/ul>\n<pre>Ap\u00f3s instalado e sabendo que esta iniciando corretamente (por padr\u00e3o) fa\u00e7a as devidas configura\u00e7\u00f5es.\r\n\r\n<strong>mv \/etc\/fail2ban\/jail.d\/defaults-debian.conf \/etc\/fail2ban\/jail.d\/defaults-debian.conf.bkp<\/strong>\r\n<strong>mv \/etc\/fail2ban\/jail.conf \/etc\/fail2ban\/jail.conf.bkp<\/strong>\r\n<strong>vim \/etc\/fail2ban\/jail.conf\r\n\r\n<\/strong><!--more-->\r\n\r\n# ===============================================================================================================\r\n# Fail2Ban Arquivo de Configura\u00e7\u00e3o\r\n\r\n#[INCLUDES]\r\n#before = paths-debian.conf\r\n\r\n[DEFAULT]\r\nignoreip = localhost IP\/NOME-DA-REDE\r\n# Bloqueia por 7 dias\r\nbantime = 604800\r\n# Permanece registrado por 12 horas\r\nfindtime = 43200\r\n# No maximo 10 tentativas\r\nmaxretry = 10\r\nusedns = warn\r\nbackend = auto\r\n\r\n#logencoding = auto\r\n#enabled = false\r\n#filter = %(__name__)s\r\nmta = sendmail\r\n#protocol = tcp\r\nchain = INPUT\r\nport = 0:65535\r\n\r\ndestemail = E-MAIL@DOMAIN\r\nsendername = Fail2Ban\r\n# Default action to take: ban only\r\naction = iptables[name=%(__name__)s, port=%(port)s]\r\n\r\n# ===============================================================================================================\r\n\r\n[sshd]\r\nenabled = true\r\nfilter = sshd\r\naction = iptables-multiport[name=SSH, port=\"22,1804\", protocol=tcp]\r\nsendmail[name=SSH, dest=E-MAIL@DOMAIN]\r\nlogpath = \/var\/log\/auth.log\r\nmaxretry = 1\r\n\r\n[zimbra-smtp]\r\nenabled = true\r\nfilter = zimbra-smtp\r\naction = iptables-multiport[name=Zimbra-SMTP, port=\"25,465,587\", protocol=tcp]\r\nsendmail[name=Zimbra-SMTP, dest=E-MAIL@DOMAIN]\r\nlogpath = \/var\/log\/zimbra.log\r\n\r\n[zimbra-pop]\r\nenabled = true\r\nfilter = zimbra-pop\r\naction = iptables-multiport[name=Zimbra-POP, port=\"110,995\", protocol=tcp]\r\nsendmail[name=Zimbra-POP, dest=E-MAIL@DOMAIN]\r\nlogpath = \/opt\/zimbra\/log\/mailbox.log\r\n\/opt\/zimbra\/log\/audit.log\r\n\r\n[zimbra-imap]\r\nenabled = true\r\nfilter = zimbra-imap\r\naction = iptables-multiport[name=Zimbra-IMAP, port=\"143,993\", protocol=tcp]\r\nsendmail[name=Zimbra-IMAP, dest=E-MAIL@DOMAIN]\r\nlogpath = \/opt\/zimbra\/log\/mailbox.log\r\n\/opt\/zimbra\/log\/audit.log\r\n\r\n[zimbra-webmail]\r\nenabled = true\r\nfilter = zimbra-webmail\r\naction = iptables-multiport[name=Zimbra-Webmail, port=\"80,443\", protocol=tcp]\r\nsendmail[name=Zimbra-Webmail, dest=E-MAIL@DOMAIN]\r\nlogpath = \/opt\/zimbra\/log\/mailbox.log\r\n\r\n[zimbra-admin]\r\nenabled = true\r\nfilter = zimbra-admin\r\naction = iptables-multiport[name=Zimbra-Admin, port=\"80,443,7071\", protocol=tcp]\r\nsendmail[name=Zimbra-Admin, dest=E-MAIL@DOMAIN]\r\nlogpath = \/opt\/zimbra\/log\/mailbox.log\r\n# ===============================================================================================================\r\n\r\n<strong>vim \/etc\/fail2ban\/filter.d\/zimbra-smtp.conf<\/strong>\r\n# ===============================================================================================================\r\n# Fail2Ban Arquivo de Configura\u00e7\u00e3o - ZIMBRA-SMTP\r\n\r\n[INCLUDES]\r\n\r\nbefore = common.conf\r\n\r\n[Definition]\r\n\r\n_daemon = postfix\/(submission\/)?smtp(d|s)\r\n\r\nfailregex = ^%(__prefix_line)sNOQUEUE: reject: RCPT from \\S+\\[&lt;HOST&gt;\\]: 554 5\\.7\\.1 .*$\r\n^%(__prefix_line)sNOQUEUE: reject: RCPT from \\S+\\[&lt;HOST&gt;\\]: 450 4\\.7\\.1 Client host rejected: cannot find your hostname, (\\[\\S*\\]); from=&lt;\\S*&gt; to=&lt;\\S+&gt; proto=ESMTP helo=&lt;\\S*&gt;$\r\n^%(__prefix_line)sNOQUEUE: reject: RCPT from \\S+\\[&lt;HOST&gt;\\]: 450 4\\.7\\.1 : Helo command rejected: Host not found; from=&lt;&gt; to=&lt;&gt; proto=ESMTP helo= *$\r\n^%(__prefix_line)sNOQUEUE: reject: VRFY from \\S+\\[&lt;HOST&gt;\\]: 550 5\\.1\\.1 .*$\r\n^%(__prefix_line)simproper command pipelining after \\S+ from [^[]*\\[&lt;HOST&gt;\\]:?$\r\n(?i): warning: [-._\\w]+\\[&lt;HOST&gt;\\]: SASL (?:LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed(: [A-Za-z0-9+\/ ]*)?$\r\n\r\nignoreregex =\r\n# ===============================================================================================================\r\n\r\n<strong>vim \/etc\/fail2ban\/filter.d\/zimbra-imap.conf<\/strong>\r\n# ===============================================================================================================\r\n# Fail2Ban Arquivo de Configura\u00e7\u00e3o - ZIMBRA-IMAP\r\n\r\n[Definition]\r\n\r\nfailregex = .*Imap.*ip=&lt;HOST&gt;;.*error=authentication failed for .*\r\n.*Imap.*ip=&lt;HOST&gt;;.*account - authentication failed for .*\r\n\r\nignoreregex =\r\n# ===============================================================================================================\r\n\r\n<strong>vim \/etc\/fail2ban\/filter.d\/zimbra-pop.conf<\/strong>\r\n# ===============================================================================================================\r\n# Fail2Ban Arquivo de Configura\u00e7\u00e3o - ZIMBRA-POP\r\n\r\n[Definition]\r\n\r\nfailregex = .*Pop.*ip=&lt;HOST&gt;;.*error=authentication failed for .*\r\n.*Pop.*ip=&lt;HOST&gt;;.*account - authentication failed for .*\r\n\r\nignoreregex =\r\n# ===============================================================================================================\r\n\r\n<strong>vim \/etc\/fail2ban\/filter.d\/zimbra-webmail.conf<\/strong>\r\n# ===============================================================================================================\r\n# Fail2Ban Arquivo de Configura\u00e7\u00e3o - ZIMBRA-WEBMAIL\r\n\r\n[Definition]\r\n\r\nfailregex = .*ip=&lt;HOST&gt;;ua=zclient.*authentication failed for .*\r\n\r\nignoreregex =\r\n# ===============================================================================================================\r\n\r\n<strong>vim \/etc\/fail2ban\/filter.d\/zimbra-admin.conf<\/strong>\r\n# ===============================================================================================================\r\n# Fail2Ban Arquivo de Configura\u00e7\u00e3o - ZIMBRA-ADMIN\r\n\r\n[Definition]\r\n\r\nfailregex = .*ip=&lt;HOST&gt;;port=.*;ua=ZimbraWebClient .* authentication failed for .*\r\n\r\nignoreregex =\r\n# ===============================================================================================================\r\n\r\n<strong>mv \/etc\/fail2ban\/action.d\/sendmail.conf \/etc\/fail2ban\/action.d\/sendmail.conf.bkp<\/strong>\r\n<strong>vim \/etc\/fail2ban\/action.d\/sendmail.conf<\/strong>\r\n# ===============================================================================================================\r\n# Fail2Ban Arquivo de Configura\u00e7\u00e3o - SENDMAIL\r\n\r\n[INCLUDES]\r\n\r\nbefore = sendmail-common.conf\r\n\r\n[Definition]\r\n\r\nactionstart = printf %%b \"Subject: [Fail2Ban] &lt;name&gt;: iniciou em `uname -n`\r\nDate: `LC_TIME=C date -u +\"%%a, %%d %%h %%Y %%T +0000\"`\r\nFrom: &lt;sendername&gt; &lt;&lt;sender&gt;&gt;\r\nTo: &lt;dest&gt;\\n\r\nOl\u00e1,\\n\r\nO jail &lt;name&gt; foi iniciado com sucesso.\\n\r\nSauda\u00e7\u00f5es,\\n\r\nFail2Ban\" | \/opt\/zimbra\/common\/sbin\/sendmail -f &lt;sender&gt; &lt;dest&gt;\r\n\r\nactionstop = printf %%b \"Subject: [Fail2Ban] &lt;name&gt;: parou em `uname -n`\r\nDate: `LC_TIME=C date -u +\"%%a, %%d %%h %%Y %%T +0000\"`\r\nFrom: &lt;sendername&gt; &lt;&lt;sender&gt;&gt;\r\nTo: &lt;dest&gt;\\n\r\nOl\u00e1,\\n\r\nO jail &lt;name&gt; foi parado.\\n\r\nSauda\u00e7\u00f5es,\\n\r\nFail2Ban\" | \/opt\/zimbra\/common\/sbin\/sendmail -f &lt;sender&gt; &lt;dest&gt;\r\n\r\nactioncheck =\r\n\r\nactionban = printf %%b \"Subject: [Fail2Ban] &lt;name&gt;: banido &lt;ip&gt; de `uname -n`\r\nDate: `LC_TIME=C date -u +\"%%a, %%d %%h %%Y %%T +0000\"`\r\nFrom: &lt;sendername&gt; &lt;&lt;sender&gt;&gt;\r\nTo: &lt;dest&gt;\\n\r\nOl\u00e1,\\n\r\nO IP &lt;ip&gt; acaba de ser banido por Fail2Ban depois de\r\n&lt;failures&gt; tentativas contra &lt;name&gt;.\\n\r\nSauda\u00e7\u00f5es,\\n\r\nFail2Ban\" | \/opt\/zimbra\/common\/sbin\/sendmail -f &lt;sender&gt; &lt;dest&gt;\r\n\r\nactionunban = printf %%b \"Subject: [Fail2Ban] &lt;name&gt;: desbanido &lt;ip&gt; de `uname -n`\r\nDate: `LC_TIME=C date -u +\"%%a, %%d %%h %%Y %%T +0000\"`\r\nFrom: &lt;sendername&gt; &lt;&lt;sender&gt;&gt;\r\nTo: &lt;dest&gt;\\n\r\nOl\u00e1,\\n\r\nO IP &lt;ip&gt; acaba de ser desbanido contra &lt;name&gt;.\\n\r\nSauda\u00e7\u00f5es,\\n\r\nFail2Ban\" | \/opt\/zimbra\/common\/sbin\/sendmail -f &lt;sender&gt; &lt;dest&gt;\r\n\r\n[Init]\r\n\r\nname = default\r\n# ===============================================================================================================\r\n\r\n<strong>service fail2ban restart ; fail2ban-client status ; tail -f \/var\/log\/fail2ban.log<\/strong><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Irei detalhar de forma bem pratica e funcional, pronto para j\u00e1 funcionar Fail2ban com Zimbra 8.8.x Instale o fail2ban seguindo as instru\u00e7\u00f5es da sua distribui\u00e7\u00e3o \u2013 (Vers\u00e3o 0.9.6 pra cima) Ap\u00f3s instalado e sabendo que esta iniciando corretamente (por padr\u00e3o) fa\u00e7a as devidas configura\u00e7\u00f5es. mv \/etc\/fail2ban\/jail.d\/defaults-debian.conf \/etc\/fail2ban\/jail.d\/defaults-debian.conf.bkp mv \/etc\/fail2ban\/jail.conf \/etc\/fail2ban\/jail.conf.bkp vim \/etc\/fail2ban\/jail.conf<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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