{"id":1949,"date":"2025-05-12T09:36:08","date_gmt":"2025-05-12T09:36:08","guid":{"rendered":"https:\/\/sintesi.inscastellbisbal.net\/offtube\/?p=1949"},"modified":"2025-05-12T09:39:26","modified_gmt":"2025-05-12T09:39:26","slug":"installation-and-configuration-of-the-log-server","status":"publish","type":"post","link":"https:\/\/sintesi.inscastellbisbal.net\/offtube\/2025\/05\/12\/installation-and-configuration-of-the-log-server\/","title":{"rendered":"Installation and configuration of the log server"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1949\" class=\"elementor elementor-1949\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2c8b52f e-flex e-con-boxed e-con e-parent\" data-id=\"2c8b52f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-46bc4ce elementor-widget elementor-widget-text-editor\" data-id=\"46bc4ce\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"\" data-start=\"61\" data-end=\"132\">\ud83d\uddc2\ufe0f <strong data-start=\"65\" data-end=\"112\">Log Centralization with Rsyslog for Offtube<\/strong> (\ud83e\udde9 Debian Version)<\/p><p class=\"\" data-start=\"134\" data-end=\"279\">\ud83d\udd0d <strong data-start=\"137\" data-end=\"157\">What is rsyslog?<\/strong><br data-start=\"157\" data-end=\"160\" \/>\ud83e\udde0 rsyslog is a powerful logging system for Unix\/Linux systems, especially useful in offline environments like Offtube.<\/p><p class=\"\" data-start=\"281\" data-end=\"299\">\ud83e\uddfe <strong data-start=\"284\" data-end=\"299\">Advantages:<\/strong><\/p><p class=\"\" data-start=\"301\" data-end=\"455\">\u2705 Centralization of events from all machines<br data-start=\"345\" data-end=\"348\" \/>\u2705 Efficient diagnostics and maintenance<br data-start=\"387\" data-end=\"390\" \/>\u2705 Robust and free system<br data-start=\"414\" data-end=\"417\" \/>\u2705 Fully functional in LAN environments<\/p><p class=\"\" data-start=\"457\" data-end=\"489\">\ud83c\udfd7\ufe0f <strong data-start=\"461\" data-end=\"489\">Centralized Architecture<\/strong><\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"sticky top-9\"><div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre!\"><span class=\"hljs-selector-attr\">[CLIENTS]<\/span> <span class=\"hljs-attr\">--rsyslog--<\/span>&gt; <span class=\"hljs-selector-attr\">[LOG SERVER]<\/span>  \n(Debian Server with rsyslog as receiver)\n<\/code><\/div><\/div><p class=\"\" data-start=\"578\" data-end=\"614\">\ud83d\udee0\ufe0f <strong data-start=\"582\" data-end=\"614\">1\ufe0f\u20e3 Log Server Configuration<\/strong><\/p><p class=\"\" data-start=\"616\" data-end=\"701\">\ud83d\udccd <strong data-start=\"619\" data-end=\"639\">Operating System<\/strong>: Debian 12 (or 11)<br data-start=\"658\" data-end=\"661\" \/>\ud83d\udcc1 <strong data-start=\"664\" data-end=\"680\">File to edit<\/strong>: <code data-start=\"682\" data-end=\"701\">\/etc\/rsyslog.conf<\/code><\/p><p class=\"\" data-start=\"703\" data-end=\"767\">\ud83d\udd27 <strong data-start=\"706\" data-end=\"715\">Steps<\/strong>:<br data-start=\"716\" data-end=\"719\" \/>\ud83d\udccc 1. Enable network log reception (UDP and TCP)<\/p><p class=\"\" data-start=\"769\" data-end=\"783\">Open the file:<\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"sticky top-9\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">sudo nano \/etc\/rsyslog.conf\n<\/code><\/div><\/div><p class=\"\" data-start=\"826\" data-end=\"863\">Add or uncomment the following lines:<\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none rounded-t-[5px]\">bash<\/div><div class=\"sticky top-9\"><div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">module(load=<span class=\"hljs-string\">\"imudp\"<\/span>) <span class=\"hljs-comment\"># \ud83d\udd01 Enable UDP<\/span>\ninput(<span class=\"hljs-built_in\">type<\/span>=<span class=\"hljs-string\">\"imudp\"<\/span> port=<span class=\"hljs-string\">\"514\"<\/span>)\n\nmodule(load=<span class=\"hljs-string\">\"imtcp\"<\/span>) <span class=\"hljs-comment\"># \ud83d\udd01 Enable TCP<\/span>\ninput(<span class=\"hljs-built_in\">type<\/span>=<span class=\"hljs-string\">\"imtcp\"<\/span> port=<span class=\"hljs-string\">\"514\"<\/span>)\n<\/code><\/div><\/div><p class=\"\" data-start=\"1015\" data-end=\"1065\">\ud83d\udcc1 2. Define where the received logs will be saved<\/p><p class=\"\" data-start=\"1067\" data-end=\"1090\">At the end of the file:<\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"sticky top-9\"><div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">template(name=<span class=\"hljs-string\">\"PerHost\"<\/span> <span class=\"hljs-built_in\">type<\/span>=<span class=\"hljs-string\">\"string\"<\/span> string=<span class=\"hljs-string\">\"\/var\/log\/%HOSTNAME%\/syslog.log\"<\/span>)\n*.* ?PerHost\n<\/code><\/div><\/div><p class=\"\" data-start=\"1197\" data-end=\"1267\">\ud83d\udd0e This will create a folder for each machine with its own log file \ud83d\udd10<\/p><p class=\"\" data-start=\"1269\" data-end=\"1302\">\u267b\ufe0f 3. Restart the rsyslog service<\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"sticky top-9\"><div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">sudo systemctl restart rsyslog\n<\/code><\/div><\/div><p class=\"\" data-start=\"1348\" data-end=\"1407\">\ud83d\udda5\ufe0f <strong data-start=\"1352\" data-end=\"1407\">2\ufe0f\u20e3 Client Configuration (Debian Desktop or Server)<\/strong><\/p><p class=\"\" data-start=\"1409\" data-end=\"1528\">\ud83d\udcc1 <strong data-start=\"1412\" data-end=\"1420\">File<\/strong>: <code data-start=\"1422\" data-end=\"1441\">\/etc\/rsyslog.conf<\/code> or <code data-start=\"1445\" data-end=\"1477\">\/etc\/rsyslog.d\/50-default.conf<\/code><br data-start=\"1477\" data-end=\"1480\" \/>\ud83e\udded <strong data-start=\"1483\" data-end=\"1500\">Log server IP<\/strong>: for example <code data-start=\"1514\" data-end=\"1528\">192.168.1.10<\/code><\/p><p class=\"\" data-start=\"1530\" data-end=\"1573\">\ud83d\udd27 <strong data-start=\"1533\" data-end=\"1542\">Steps<\/strong>:<br data-start=\"1543\" data-end=\"1546\" \/>\ud83d\udce8 1. Add the log server IP<\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"sticky top-9\"><div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">sudo nano \/etc\/rsyslog.conf\n<\/code><\/div><\/div><p class=\"\" data-start=\"1616\" data-end=\"1669\">Add one of the following lines based on the protocol:<\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"sticky top-9\"><div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">*.* @192.168.1.10:514     <span class=\"hljs-comment\"># UDP (one @)<\/span>\n*.* @@192.168.1.10:514    <span class=\"hljs-comment\"># TCP (two @)<\/span>\n<\/code><\/div><\/div><p class=\"\" data-start=\"1764\" data-end=\"1789\">\u267b\ufe0f 2. Restart the service<\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"sticky top-9\"><div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">sudo systemctl restart rsyslog\n<\/code><\/div><\/div><p class=\"\" data-start=\"1835\" data-end=\"1866\">\ud83e\ude9f <strong data-start=\"1838\" data-end=\"1866\">3\ufe0f\u20e3 For Windows Machines<\/strong><\/p><p class=\"\" data-start=\"1868\" data-end=\"1921\">\u26a0\ufe0f Windows does not include rsyslog, but you can use:<\/p><p class=\"\" data-start=\"1923\" data-end=\"2031\">\ud83d\udd27 <strong data-start=\"1926\" data-end=\"1935\">NXLog<\/strong> \u2013 free, powerful and easy to configure<br data-start=\"1974\" data-end=\"1977\" \/>\ud83d\udd27 <strong data-start=\"1980\" data-end=\"1995\">Snare Agent<\/strong> \u2013 popular in corporate environments<\/p><p class=\"\" data-start=\"2033\" data-end=\"2080\">\u27a1\ufe0f Configure them to send to <code data-start=\"2062\" data-end=\"2080\">192.168.1.10:514<\/code><\/p><p class=\"\" data-start=\"2082\" data-end=\"2116\">\ud83d\udd10 <strong data-start=\"2085\" data-end=\"2116\">4\ufe0f\u20e3 Security Considerations<\/strong><\/p><p class=\"\" data-start=\"2118\" data-end=\"2159\">\ud83d\udd25 <strong data-start=\"2121\" data-end=\"2159\">Firewall with UFW (on the server):<\/strong><\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"sticky top-9\"><div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">sudo ufw allow from 192.168.1.0\/24 to any port 514\n<\/code><\/div><\/div><p class=\"\" data-start=\"2225\" data-end=\"2261\">\ud83d\udce6 <strong data-start=\"2228\" data-end=\"2261\">Log compression and rotation:<\/strong><\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"sticky top-9\"><div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">sudo apt install logrotate\n<\/code><\/div><\/div><p class=\"\" data-start=\"2303\" data-end=\"2321\">\ud83e\uddea <strong data-start=\"2306\" data-end=\"2321\">5\ufe0f\u20e3 Testing<\/strong><\/p><p class=\"\" data-start=\"2323\" data-end=\"2342\">\ud83d\udd0e From the client:<\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"sticky top-9\"><div class=\"absolute end-0 bottom-0 flex h-9 items-center pe-2\"><div class=\"bg-token-sidebar-surface-primary text-token-text-secondary dark:bg-token-main-surface-secondary flex items-center rounded-sm px-2 font-sans text-xs\">\u00a0<\/div><\/div><\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">logger <span class=\"hljs-string\">\"\ud83e\uddea Test log sent to the server\"<\/span>\n<\/code><\/div><\/div><p class=\"\" data-start=\"2397\" data-end=\"2416\">\ud83d\udd0e From the server:<\/p><div class=\"contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary\"><div class=\"flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary select-none rounded-t-[5px]\">\u00a0<\/div><div class=\"overflow-y-auto p-4\" dir=\"ltr\"><code class=\"whitespace-pre! language-bash\">sudo <span class=\"hljs-built_in\">tail<\/span> -f \/var\/log\/CLIENT_NAME\/syslog.log\n<\/code><\/div><\/div><p class=\"\" data-start=\"2476\" data-end=\"2505\">\ud83d\udcca <strong data-start=\"2479\" data-end=\"2505\">Optional Visualization<\/strong><\/p><p class=\"\" data-start=\"2507\" data-end=\"2633\">\ud83d\udda5\ufe0f <strong data-start=\"2511\" data-end=\"2526\">LogAnalyzer<\/strong>: web interface (requires Apache\/Nginx + PHP)<br data-start=\"2571\" data-end=\"2574\" \/>\ud83d\udcc1 <strong data-start=\"2577\" data-end=\"2589\">Terminal<\/strong>: Use <code data-start=\"2595\" data-end=\"2601\">less<\/code>, <code data-start=\"2603\" data-end=\"2609\">grep<\/code>, <code data-start=\"2611\" data-end=\"2617\">tail<\/code> to analyze logs<\/p><p class=\"\" data-start=\"2635\" data-end=\"2654\">\u2705 <strong data-start=\"2637\" data-end=\"2654\">Final Summary<\/strong><\/p><div class=\"_tableContainer_16hzy_1\"><div class=\"_tableWrapper_16hzy_14 group flex w-fit flex-col-reverse\"><table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"2656\" data-end=\"3098\"><thead data-start=\"2656\" data-end=\"2741\"><tr data-start=\"2656\" data-end=\"2741\"><th data-start=\"2656\" data-end=\"2675\" data-col-size=\"sm\">\ud83d\udd27 Component<\/th><th data-start=\"2675\" data-end=\"2696\" data-col-size=\"sm\">Operating System<\/th><th data-start=\"2696\" data-end=\"2741\" data-col-size=\"sm\">Rsyslog Function<\/th><\/tr><\/thead><tbody data-start=\"2829\" data-end=\"3098\"><tr data-start=\"2829\" data-end=\"2914\"><td data-start=\"2829\" data-end=\"2848\" data-col-size=\"sm\">\ud83e\udde0 Log Server<\/td><td data-start=\"2848\" data-end=\"2869\" data-col-size=\"sm\">Debian Server 12<\/td><td data-start=\"2869\" data-end=\"2914\" data-col-size=\"sm\">Receive, organize, and store logs<\/td><\/tr><tr data-start=\"2915\" data-end=\"3005\"><td data-start=\"2915\" data-end=\"2935\" data-col-size=\"sm\">\ud83d\udda5\ufe0f Clients<\/td><td data-start=\"2935\" data-end=\"2959\" data-col-size=\"sm\">Debian Desktop\/Server<\/td><td data-col-size=\"sm\" data-start=\"2959\" data-end=\"3005\">Send their events<\/td><\/tr><tr data-start=\"3006\" data-end=\"3098\"><td data-start=\"3006\" data-end=\"3027\" data-col-size=\"sm\">\ud83d\udee0\ufe0f Administrators<\/td><td data-col-size=\"sm\" data-start=\"3027\" data-end=\"3052\">Debian Desktop or WSL2<\/td><td data-col-size=\"sm\" data-start=\"3052\" data-end=\"3098\">Consult, audit, and analyze logs<\/td><\/tr><\/tbody><\/table><div class=\"sticky end-(--thread-content-margin) h-0 self-end select-none\"><div class=\"absolute end-0 flex items-end\">\u00a0<\/div><\/div><\/div><\/div><p class=\"\" data-start=\"3100\" data-end=\"3300\">\ud83e\udde0 <strong data-start=\"3103\" data-end=\"3117\">Conclusion<\/strong><br data-start=\"3117\" data-end=\"3120\" \/>With rsyslog on Debian, you have a lightweight, robust, and fully functional solution to achieve full traceability and control over your systems without needing Internet access \ud83c\udf10.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\ud83d\uddc2\ufe0f Log Centralization with Rsyslog for Offtube (\ud83e\udde9 Debian Version) \ud83d\udd0d What is rsyslog?\ud83e\udde0 rsyslog is a powerful logging system for Unix\/Linux systems, especially useful in offline environments like Offtube. \ud83e\uddfe Advantages: \u2705 Centralization of events from all machines\u2705 Efficient diagnostics and maintenance\u2705 Robust and free system\u2705 Fully functional in LAN environments \ud83c\udfd7\ufe0f Centralized Architecture &#8230; <a title=\"Installation and configuration of the log server\" class=\"read-more\" href=\"https:\/\/sintesi.inscastellbisbal.net\/offtube\/2025\/05\/12\/installation-and-configuration-of-the-log-server\/\" aria-label=\"Read more about Installation and configuration of the log server\">Read more<\/a><\/p>\n","protected":false},"author":37,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1949","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Installation and configuration of the log server - S\u00cdNTESI 25 | OFFTUBE<\/title>\n<meta name=\"robots\" content=\"index, follow, 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