{"id":6372,"date":"2025-07-03T08:38:41","date_gmt":"2025-07-03T06:38:41","guid":{"rendered":"http:\/\/bestlinuxtutorials.com\/?p=6372"},"modified":"2025-11-06T20:38:55","modified_gmt":"2025-11-06T19:38:55","slug":"como-instalar-fail2ban-en-ubuntu","status":"publish","type":"post","link":"https:\/\/bestlinuxtutorials.com\/es\/como-instalar-fail2ban-en-ubuntu\/","title":{"rendered":"C\u00f3mo instalar fail2ban en Ubuntu 24.04"},"content":{"rendered":"<p>Para instalar fail2ban en Ubuntu 24.04<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code\" data-no-translation=\"\"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\napt-get install fail2ban\n<\/pre><\/div>\n\n\n<p>Comprueba si hay nuevas sesiones<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code\" data-no-translation=\"\"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nzgrep &quot;New session&quot; \/var\/log\/auth.log*\n<\/pre><\/div>\n\n\n<!--more-->\n\n\n\n<p>Comprueba qu\u00e9 c\u00e1rceles est\u00e1n habilitadas<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code\" data-no-translation=\"\"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nfail2ban-client status\n<\/pre><\/div>\n\n\n<p>Ahora comprueba la jaula ssh que est\u00e1 activada<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code\" data-no-translation=\"\"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nfail2ban-client status sshd\n<\/pre><\/div>\n\n\n<p>Para comprobar las IP prohibidas actualmente<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code\" data-no-translation=\"\"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\ngrep &#039;Ban&#039; \/var\/log\/fail2ban.log*\n<\/pre><\/div>\n\n\n<p>Estos son los valores por defecto de fail2ban para tu servidor Ubuntu<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code\" data-no-translation=\"\"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\n\/etc\/fail2ban\/jail.d\/defaults-debian.conf -- the defaults\n<\/pre><\/div>\n\n\n<p>Obt\u00e9n cu\u00e1les son las acciones por defecto para la c\u00e1rcel ssh<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code\" data-no-translation=\"\"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nfail2ban-client get sshd actions\n<\/pre><\/div>\n\n\n<p>Por defecto, el comando anterior da nftables.<\/p>\n\n\n\n<p>Para obtener las IP bloqueadas<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code\" data-no-translation=\"\"><pre class=\"brush: plain; title: ; notranslate\" title=\"\">\nnft list ruleset\n<\/pre><\/div>\n\n\n<p>Referencia<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/github.com\/fail2ban\/fail2ban\/wiki\/How-fail2ban-works\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/github.com\/fail2ban\/fail2ban\/wiki\/How-fail2ban-works<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/github.com\/fail2ban\/fail2ban\/wiki\/Proper-fail2ban-configuration\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/github.com\/fail2ban\/fail2ban\/wiki\/Proper-fail2ban-configuration<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/github.com\/fail2ban\/fail2ban\/wiki\/Best-practice\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/github.com\/fail2ban\/fail2ban\/wiki\/Best-practice<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Para instalar fail2ban en Ubuntu 24.04 Comprueba si hay nuevas sesiones<\/p>","protected":false},"author":1,"featured_media":6374,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"table_tags":[],"class_list":["post-6372","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ubuntu"],"_links":{"self":[{"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/posts\/6372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/comments?post=6372"}],"version-history":[{"count":14,"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/posts\/6372\/revisions"}],"predecessor-version":[{"id":6394,"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/posts\/6372\/revisions\/6394"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/media\/6374"}],"wp:attachment":[{"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/media?parent=6372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/categories?post=6372"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/tags?post=6372"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/bestlinuxtutorials.com\/es\/wp-json\/wp\/v2\/table_tags?post=6372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}