{"id":128,"date":"2025-11-30T20:11:38","date_gmt":"2025-11-30T20:11:38","guid":{"rendered":"https:\/\/adler-tech.com\/?page_id=128"},"modified":"2026-04-13T15:09:44","modified_gmt":"2026-04-13T14:09:44","slug":"firewall-basics-iptables-nftables-training","status":"publish","type":"page","link":"https:\/\/adler-tech.com\/?page_id=128","title":{"rendered":"Firewall Basics: iptables \/ nftables Training"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p><strong>Duration:<\/strong> 2 days (7 hours per day)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Course Outline \/ Agenda<\/strong><\/h3>\n\n\n\n<p><strong>Day 1 \u2013 Introduction &amp; iptables Fundamentals<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chapter 1: Firewall Concepts<\/strong>\n<ul class=\"wp-block-list\">\n<li>What is a firewall and why it\u2019s needed<\/li>\n\n\n\n<li>Stateful vs stateless filtering<\/li>\n\n\n\n<li>Packet flow: INPUT, OUTPUT, FORWARD chains<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Chapter 2: iptables Basics<\/strong>\n<ul class=\"wp-block-list\">\n<li>Installing and checking iptables<\/li>\n\n\n\n<li>Understanding tables: filter, nat, mangle, raw<\/li>\n\n\n\n<li>Managing chains: INPUT, OUTPUT, FORWARD<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Chapter 3: Basic Rules<\/strong>\n<ul class=\"wp-block-list\">\n<li>Allowing or blocking traffic by IP, port, or protocol<\/li>\n\n\n\n<li>Default policies and order of rules<\/li>\n\n\n\n<li>Saving and restoring iptables rules<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Chapter 4: Logging and Monitoring<\/strong>\n<ul class=\"wp-block-list\">\n<li>Using <code>LOG<\/code> target for packet logging<\/li>\n\n\n\n<li>Monitoring firewall activity<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>Day 2 \u2013 nftables Basics &amp; Simple Use Cases<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Chapter 5: Introduction to nftables<\/strong>\n<ul class=\"wp-block-list\">\n<li>Difference between iptables and nftables<\/li>\n\n\n\n<li>Tables, chains, and sets in nftables<\/li>\n\n\n\n<li>Installing and enabling nftables<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Chapter 6: Writing Basic nftables Rules<\/strong>\n<ul class=\"wp-block-list\">\n<li>Filtering traffic by IP, port, and protocol<\/li>\n\n\n\n<li>NAT and port forwarding<\/li>\n\n\n\n<li>Using sets for multiple IPs or ports<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Chapter 7: Basic Management<\/strong>\n<ul class=\"wp-block-list\">\n<li>Viewing, flushing, and saving rules<\/li>\n\n\n\n<li>Using <code>nft list ruleset<\/code> and <code>nft delete<\/code><\/li>\n\n\n\n<li>Integrating nftables with system startup<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Chapter 8: Simple Firewall Scenarios<\/strong>\n<ul class=\"wp-block-list\">\n<li>Block all incoming traffic except SSH<\/li>\n\n\n\n<li>Allow web traffic (HTTP\/HTTPS) to a web server<\/li>\n\n\n\n<li>Drop traffic from a blacklist of IPs<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Duration: 2 days (7 hours per day) Course Outline \/ Agenda Day 1 \u2013 Introduction &amp; iptables Fundamentals Day 2 \u2013 nftables Basics &amp; Simple Use Cases<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":22,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-128","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Firewall Basics: iptables \/ nftables Training - ADLER-TECH<\/title>\n<meta name=\"description\" content=\"Firewall is gatekeeper to your system. Learn how to configure it to make it more secure without even re-configuring application.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/adler-tech.com\/?page_id=128\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Firewall Basics: iptables \/ nftables Training - ADLER-TECH\" \/>\n<meta property=\"og:description\" content=\"Firewall is gatekeeper to your system. Learn how to configure it to make it more secure without even re-configuring application.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/adler-tech.com\/?page_id=128\" \/>\n<meta property=\"og:site_name\" content=\"ADLER-TECH\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-13T14:09:44+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/adler-tech.com\\\/?page_id=128\",\"url\":\"https:\\\/\\\/adler-tech.com\\\/?page_id=128\",\"name\":\"Firewall Basics: iptables \\\/ nftables Training - ADLER-TECH\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/adler-tech.com\\\/#website\"},\"datePublished\":\"2025-11-30T20:11:38+00:00\",\"dateModified\":\"2026-04-13T14:09:44+00:00\",\"description\":\"Firewall is gatekeeper to your system. Learn how to configure it to make it more secure without even re-configuring application.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/adler-tech.com\\\/?page_id=128#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/adler-tech.com\\\/?page_id=128\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/adler-tech.com\\\/?page_id=128#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/adler-tech.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Trainings\",\"item\":\"https:\\\/\\\/adler-tech.com\\\/?page_id=7\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Networking training\",\"item\":\"https:\\\/\\\/adler-tech.com\\\/?page_id=22\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Firewall Basics: iptables \\\/ nftables Training\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/adler-tech.com\\\/#website\",\"url\":\"https:\\\/\\\/adler-tech.com\\\/\",\"name\":\"ADLER-TECH\",\"description\":\"Best IT trainings, support and bodyleasing\",\"publisher\":{\"@id\":\"https:\\\/\\\/adler-tech.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/adler-tech.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/adler-tech.com\\\/#organization\",\"name\":\"ADLER-TECH\",\"url\":\"https:\\\/\\\/adler-tech.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/adler-tech.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/adler-tech.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/ADLER-TECH_LOGO.png\",\"contentUrl\":\"https:\\\/\\\/adler-tech.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/ADLER-TECH_LOGO.png\",\"width\":361,\"height\":121,\"caption\":\"ADLER-TECH\"},\"image\":{\"@id\":\"https:\\\/\\\/adler-tech.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/110643968\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Firewall Basics: iptables \/ nftables Training - ADLER-TECH","description":"Firewall is gatekeeper to your system. Learn how to configure it to make it more secure without even re-configuring application.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/adler-tech.com\/?page_id=128","og_locale":"en_US","og_type":"article","og_title":"Firewall Basics: iptables \/ nftables Training - ADLER-TECH","og_description":"Firewall is gatekeeper to your system. Learn how to configure it to make it more secure without even re-configuring application.","og_url":"https:\/\/adler-tech.com\/?page_id=128","og_site_name":"ADLER-TECH","article_modified_time":"2026-04-13T14:09:44+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/adler-tech.com\/?page_id=128","url":"https:\/\/adler-tech.com\/?page_id=128","name":"Firewall Basics: iptables \/ nftables Training - ADLER-TECH","isPartOf":{"@id":"https:\/\/adler-tech.com\/#website"},"datePublished":"2025-11-30T20:11:38+00:00","dateModified":"2026-04-13T14:09:44+00:00","description":"Firewall is gatekeeper to your system. Learn how to configure it to make it more secure without even re-configuring application.","breadcrumb":{"@id":"https:\/\/adler-tech.com\/?page_id=128#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/adler-tech.com\/?page_id=128"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/adler-tech.com\/?page_id=128#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/adler-tech.com\/"},{"@type":"ListItem","position":2,"name":"Trainings","item":"https:\/\/adler-tech.com\/?page_id=7"},{"@type":"ListItem","position":3,"name":"Networking training","item":"https:\/\/adler-tech.com\/?page_id=22"},{"@type":"ListItem","position":4,"name":"Firewall Basics: iptables \/ nftables Training"}]},{"@type":"WebSite","@id":"https:\/\/adler-tech.com\/#website","url":"https:\/\/adler-tech.com\/","name":"ADLER-TECH","description":"Best IT trainings, support and bodyleasing","publisher":{"@id":"https:\/\/adler-tech.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/adler-tech.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/adler-tech.com\/#organization","name":"ADLER-TECH","url":"https:\/\/adler-tech.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/adler-tech.com\/#\/schema\/logo\/image\/","url":"https:\/\/adler-tech.com\/wp-content\/uploads\/2026\/04\/ADLER-TECH_LOGO.png","contentUrl":"https:\/\/adler-tech.com\/wp-content\/uploads\/2026\/04\/ADLER-TECH_LOGO.png","width":361,"height":121,"caption":"ADLER-TECH"},"image":{"@id":"https:\/\/adler-tech.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/110643968"]}]}},"_links":{"self":[{"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/pages\/128","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/adler-tech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=128"}],"version-history":[{"count":2,"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/pages\/128\/revisions"}],"predecessor-version":[{"id":140,"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/pages\/128\/revisions\/140"}],"up":[{"embeddable":true,"href":"https:\/\/adler-tech.com\/index.php?rest_route=\/wp\/v2\/pages\/22"}],"wp:attachment":[{"href":"https:\/\/adler-tech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}