{"id":14562,"date":"2024-01-09T12:24:50","date_gmt":"2024-01-09T08:54:50","guid":{"rendered":"https:\/\/www.itpiran.net\/blog\/?p=14562"},"modified":"2024-01-10T10:11:16","modified_gmt":"2024-01-10T06:41:16","slug":"setup-ubuntu-20-04","status":"publish","type":"post","link":"https:\/\/www.itpiran.net\/blog\/de\/tutorials\/setup-ubuntu-20-04\/","title":{"rendered":"Ubuntu 20.04 Installationsanleitung"},"content":{"rendered":"<h2 id=\"%d9%85%d9%82%d8%af%d9%85%d9%87\">Einf\u00fchrung<\/h2>\n<p>In diesem Tutorial lernen Sie, wie Sie einen Ubuntu-Server einrichten. Dies umfasst das Anlegen eines Benutzers ohne Root-Rechte, das Aktivieren der SSH-Anmeldung, das Deaktivieren der Root-Anmeldung und das Aktivieren einer einfachen Firewall.<\/p>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-1-%d9%88%d8%a7%d8%b1%d8%af-%d8%b3%d8%b1%d9%88%d8%b1-%d8%ac%d8%af%db%8c%d8%af-%d8%ae%d9%88%d8%af-%d8%b4%d9%88%db%8c%d8%af\">Schritt 1 \u2013 Melden Sie sich auf Ihrem neuen Server an.<\/h2>\n<p>Melden Sie sich als Root-Benutzer auf Ihrem neuen Ubuntu 20.04-Server an:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>ssh root@10.0.0.1\r\n<\/code><\/pre>\n<\/div>\n<p>Wenn Sie Ihren Server bereits mit einem SSH-Schl\u00fcssel eingerichtet haben und es sich nicht um Ihren Standardschl\u00fcssel handelt, m\u00fcssen Sie Ihrem Ger\u00e4t mitteilen, wo es diesen findet:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>ssh -i \/path\/to\/ssh\/key root@10.0.0.1\r\n<\/code><\/pre>\n<\/div>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-2-%db%8c%da%a9-%da%a9%d8%a7%d8%b1%d8%a8%d8%b1-%d8%ba%db%8c%d8%b1-%d8%b1%db%8c%d8%b4%d9%87-%d8%ac%d8%af%db%8c%d8%af-%d8%a7%db%8c%d8%ac%d8%a7%d8%af-%da%a9%d9%86\">Schritt 2 \u2013 Neuen Benutzer ohne Root-Rechte erstellen<\/h2>\n<p>Es wird empfohlen, den Root-Benutzer nicht regelm\u00e4\u00dfig zu verwenden. Daher erstellen wir einen neuen Benutzer ohne Root-Rechte. Zuk\u00fcnftig werden wir uns ausschlie\u00dflich mit diesem Benutzer anmelden.<\/p>\n<p>Um einen neuen Benutzer anzulegen, geben Sie folgenden Befehl ein:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>root@10.0.0.1:~$ adduser holu\r\n<\/code><\/pre>\n<\/div>\n<p>Sie werden nun aufgefordert, Informationen einzugeben. Geben Sie zun\u00e4chst ein sicheres Passwort ein. Die restlichen Informationen k\u00f6nnen Sie durch Dr\u00fccken der entsprechenden Taste eingeben. <code>EINGEBEN<\/code> Ausf\u00fcllen oder ablehnen.<\/p>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-3-%da%a9%d8%a7%d8%b1%d8%a8%d8%b1-%d8%ac%d8%af%db%8c%d8%af-%d8%b1%d8%a7-%d8%a8%d9%87-%da%af%d8%b1%d9%88%d9%87-sudo-%d8%a7%d8%b6%d8%a7%d9%81%d9%87-%da%a9%d9%86\">Schritt 3 \u2013 F\u00fcgen Sie den neuen Benutzer der sudo-Gruppe hinzu<\/h2>\n<p>Unser neuer Benutzer verf\u00fcgt nur \u00fcber normale Benutzerrechte. Da wir ihn aber als Hauptbenutzer verwenden werden, ben\u00f6tigen wir gelegentlich Administratorrechte. Um administrative Befehle als Benutzer ohne Root-Rechte ausf\u00fchren zu k\u00f6nnen, m\u00fcssen wir ihn der Gruppe \u201esudo\u201c hinzuf\u00fcgen.<\/p>\n<p>Dazu f\u00fchren wir diesen Befehl weiterhin als Root-Benutzer aus:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>root@10.0.0.1:~$ usermod -aG sudo holu\r\n<\/code><\/pre>\n<\/div>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-4-%d8%a8%d9%87-%da%a9%d8%a7%d8%b1%d8%a8%d8%b1-%d8%ac%d8%af%db%8c%d8%af-%d8%aa%d8%a8%d8%af%db%8c%d9%84-%d8%b4%d9%88%db%8c%d8%af\">Schritt 4 \u2013 Registrieren Sie sich als neuer Benutzer<\/h2>\n<p>Melden Sie sich nun mit folgendem Befehl vom Root-Benutzer ab:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>root@10.0.0.1:~$ exit\r\n<\/code><\/pre>\n<\/div>\n<p>Danach k\u00f6nnen wir uns mit unserem neuen Benutzer anmelden:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>ssh holu@10.0.0.1\r\n<\/code><\/pre>\n<\/div>\n<p>Da wir nun als normaler Benutzer (kein Root-Benutzer) angemeldet sind, m\u00fcssen wir vor administrativen Befehlen sudo verwenden.<\/p>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-5-%d9%81%d8%a7%db%8c%d8%b1%d9%88%d8%a7%d9%84-%d8%a7%d8%b5%d9%84%db%8c-%d8%b1%d8%a7-%d9%81%d8%b9%d8%a7%d9%84-%da%a9%d9%86%db%8c%d8%af\">Schritt 5 \u2013 Aktivieren Sie die Hauptfirewall.<\/h2>\n<p>Nachdem wir einen Benutzer ohne Root-Rechte erstellt haben, m\u00f6chten wir die Firewall aktivieren. Verwenden Sie dazu Folgendes: <code>ufw <\/code>Wir verwenden.<\/p>\n<h5 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-5-1-%d8%aa%d9%85%d8%a7%d9%85-%d8%a8%d8%b1%d9%86%d8%a7%d9%85%d9%87-%d9%87%d8%a7%db%8c-%da%a9%d8%a7%d8%b1%d8%a8%d8%b1%d8%af%db%8c-%d9%85%d9%88%d8%ac%d9%88%d8%af\">Schritt 5.1 \u2013 Alle verf\u00fcgbaren Anwendungen auflisten<\/h5>\n<p>Zun\u00e4chst m\u00f6chten wir alle verf\u00fcgbaren Programme auflisten, die wir bei der Firewall registrieren k\u00f6nnen.<\/p>\n<p>Sie k\u00f6nnen sie mit folgendem Befehl auflisten:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>holu@10.0.0.1:~$ sudo ufw app list\r\n<\/code><\/pre>\n<\/div>\n<p>Dies wird die Ausgabe sein:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>Available applications:\r\nOpenSSH<\/code><\/pre>\n<\/div>\n<h5 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-5-2-%d8%a8%d9%87-openssh-%d8%a7%d8%ac%d8%a7%d8%b2%d9%87-%d8%af%d9%87%db%8c%d8%af\">Schritt 5.2 \u2013 OpenSSH zulassen<\/h5>\n<p>Da wir uns in Zukunft per SSH in Systeme einloggen m\u00f6chten, m\u00fcssen wir SSH aktivieren, bevor wir die Firewall aktivieren:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>holu@10.0.0.1:~$ sudo ufw allow OpenSSH\r\n<\/code><\/pre>\n<\/div>\n<h5 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-5-3-%d9%81%d8%a7%db%8c%d8%b1%d9%88%d8%a7%d9%84-%d8%b1%d8%a7-%d9%81%d8%b9%d8%a7%d9%84-%da%a9%d9%86%db%8c%d8%af\">Schritt 5.3 \u2013 Firewall aktivieren<\/h5>\n<p>Da die Firewall nun SSH-Verbindungen zul\u00e4sst, k\u00f6nnen wir diese aktivieren:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>holu@10.0.0.1:~$ sudo ufw enable\r\n<\/code><\/pre>\n<\/div>\n<p>\u00dcberpr\u00fcfen Sie als N\u00e4chstes den Status:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>holu@10.0.0.1:~$ ufw status\r\n<\/code><\/pre>\n<\/div>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\">Status: active<code><\/code><code class=\"language-shell\">To                         Action      From\r\n--                         ------      ----\r\nOpenSSH                    ALLOW       Anywhere\r\nOpenSSH <span class=\"token punctuation\">(<\/span>v6<span class=\"token punctuation\">)<\/span>               ALLOW       Anywhere <span class=\"token punctuation\">(<\/span>v6<span class=\"token punctuation\">)<\/span><\/code><code><\/code><\/pre>\n<\/div>\n<p>Die Firewall blockiert nun alle Verbindungen au\u00dfer SSH.<\/p>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-6-%da%a9%d9%84%db%8c%d8%af%d9%87%d8%a7%db%8c-ssh-%d8%b1%d8%a7-%d8%a7%d8%b6%d8%a7%d9%81%d9%87-%da%a9%d9%86%db%8c%d8%af\">Schritt 6 \u2013 SSH-Schl\u00fcssel hinzuf\u00fcgen<\/h2>\n<p>Erstellen Sie ein SSH-Schl\u00fcsselpaar auf Ihrem Ger\u00e4t.<\/p>\n<p>Kopieren Sie nun den \u00f6ffentlichen Schl\u00fcssel von Ihrem Ger\u00e4t auf Ihren Server mit folgendem Befehl:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>cat ~\/.ssh\/ssh_key.pub | ssh holu@10.0.0.1 \"mkdir -p ~\/.ssh &amp;&amp; chmod 700 ~\/.ssh &amp;&amp; cat &gt;&gt; ~\/.ssh\/authorized_keys &amp;&amp; chmod 600 ~\/.ssh\/authorized_keys\"\r\n<\/code><\/pre>\n<\/div>\n<p><code><\/code><\/p>\n<ul>\n<li><code>~\/.ssh\/ssh_key.pub<\/code>Ersetzen Sie dies durch den Pfad zu Ihrem \u00f6ffentlichen SSH-Schl\u00fcssel.<\/li>\n<li>Ersetzen Sie diesen durch Ihren neuen Benutzernamen. <code>Hallo <\/code>Tun<\/li>\n<li>Ersetzen Sie 10.0.0.1 durch die IP-Adresse Ihres Servers.<\/li>\n<\/ul>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-7-%d9%be%db%8c%da%a9%d8%b1%d8%a8%d9%86%d8%af%db%8c-sshd-%d8%b1%d8%a7-%d9%88%db%8c%d8%b1%d8%a7%db%8c%d8%b4-%da%a9%d9%86%db%8c%d8%af\">Schritt 7 \u2013 Bearbeiten Sie die SSHD-Konfiguration<\/h2>\n<p>Nun, das von <code>SSH <\/code>Wir verwenden es, um uns in unser System einzuloggen. Wir m\u00fcssen die passwortbasierte Anmeldung und die Anmeldung als Root-Benutzer deaktivieren.<\/p>\n<p>Hierf\u00fcr reichen wir eine Klage ein <code>\/etc\/ssh\/sshd_config<\/code> Wir bearbeiten:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>holu@10.0.0.1:~$ sudo nano \/etc\/ssh\/sshd_config\r\n<\/code><\/pre>\n<\/div>\n<h5 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-7-1-%d9%88%d8%b1%d9%88%d8%af-%d9%85%d8%a8%d8%aa%d9%86%db%8c-%d8%a8%d8%b1-%d8%b1%d9%85%d8%b2-%d8%b9%d8%a8%d9%88%d8%b1-%d8%b1%d8%a7-%d8%ba%db%8c%d8%b1%d9%81%d8%b9\">Schritt 7.1 \u2013 Passwortbasierte Anmeldung deaktivieren<\/h5>\n<p>Suchen Sie in der Datei die folgende Zeile:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>PasswordAuthentication yes\r\n<\/code><\/pre>\n<\/div>\n<p>Und \u00e4ndern Sie es in folgende Zeile:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>PasswordAuthentication no\r\n<\/code><\/pre>\n<\/div>\n<h5 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-7-2-%d9%88%d8%b1%d9%88%d8%af-%d8%a8%d9%87-root-%d8%b1%d8%a7-%d8%ba%db%8c%d8%b1%d9%81%d8%b9%d8%a7%d9%84-%da%a9%d9%86%db%8c%d8%af\">Schritt 7.2 \u2013 Root-Login deaktivieren<\/h5>\n<p>Suchen Sie in der Datei die folgende Zeile:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>PermitRootLogin yes\r\n<\/code><\/pre>\n<\/div>\n<p>und \u00e4ndern Sie es in die folgende Zeile<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>PermitRootLogin no\r\n<\/code><\/pre>\n<\/div>\n<h5 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-7-3-%d8%b3%d8%b1%d9%88%db%8c%d8%b3-sshd-%d8%b1%d8%a7-%d8%b1%d8%a7%d9%87-%d8%a7%d9%86%d8%af%d8%a7%d8%b2%db%8c-%d9%85%d8%ac%d8%af%d8%af-%da%a9%d9%86%db%8c%d8%af\">Schritt 7.3 \u2013 Starten Sie den SSHD-Dienst neu.<\/h5>\n<p>Speichern und schlie\u00dfen Sie den Editor.<\/p>\n<p>Starten Sie nun den SSHD-Dienst neu:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>holu@10.0.0.1:~$ sudo systemctl restart ssh\r\n<\/code><\/pre>\n<\/div>\n<h2 id=\"%d9%85%d8%b1%d8%ad%d9%84%d9%87-8-%db%8c%da%a9-%d9%be%db%8c%da%a9%d8%b1%d8%a8%d9%86%d8%af%db%8c-ssh-%d8%a7%d8%ae%d8%aa%db%8c%d8%a7%d8%b1%db%8c-%d8%a7%db%8c%d8%ac%d8%a7%d8%af-%da%a9%d9%86\">Schritt 8 \u2013 SSH-Konfiguration erstellen (optional)<\/h2>\n<p>Erstellen Sie eine SSH-Konfiguration auf Ihrem Ger\u00e4t. Hier teilen wir unserem Ger\u00e4t mit, wo es unseren SSH-Schl\u00fcssel findet, damit wir ihn nicht bei jeder Anmeldung angeben m\u00fcssen.<\/p>\n<p>F\u00fchren Sie folgenden Befehl auf Ihrem Ger\u00e4t aus:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\"><code>sudo nano ~\/.ssh\/config\r\n<\/code><\/pre>\n<\/div>\n<p>F\u00fcgen Sie nun den folgenden Inhalt hinzu, der Ihrem SSH-Schl\u00fcssel entspricht:<\/p>\n<div class=\"hcb_wrap\" data-no-translation=\"\" data-no-auto-translation=\"\">\n<pre class=\"prism line-numbers lang-bash\" data-lang=\"Bash\">HOST 10.0.0.1\r\nIdentityFile ~\/.ssh\/SSH-key<\/pre>\n<\/div>\n<p>Immer wenn Sie sich nun an Ihrem Server anmelden, sucht Ihr Ger\u00e4t nach dem richtigen SSH-Schl\u00fcssel.<\/p>\n<h2 id=\"%d9%86%d8%aa%db%8c%d8%ac%d9%87\">Ergebnis<\/h2>\n<p>Wir haben nun einen einfachen Ubuntu 20.04-Server eingerichtet. Wir haben einen Benutzer ohne Root-Rechte erstellt und die SSH-Anmeldung aktiviert. Zus\u00e4tzlich haben wir die Root-Anmeldung deaktiviert und die ufw-Firewall aktiviert.<\/p>","protected":false},"excerpt":{"rendered":"Einleitung In diesem Tutorial lernen Sie, wie Sie einen Ubuntu-Server einrichten. Dies beinhaltet die Erstellung eines\u2026","protected":false},"author":1,"featured_media":14570,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"\u0646\u0635\u0628 Ubuntu","_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_yoast_wpseo_canonical":"","_yoast_wpseo_opengraph-description":"","_yoast_wpseo_opengraph-image":"","_yoast_wpseo_twitter-description":"","_yoast_wpseo_twitter-image":"","_yoast_wpseo_focuskeywords":"","_yoast_wpseo_primary_category":"193","footnotes":""},"categories":[193,369],"tags":[368],"class_list":{"0":"post-14562","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-tutorials","8":"category-os","9":"tag-ubuntu"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u0622\u0645\u0648\u0632\u0634 \u0646\u0635\u0628 Ubuntu 20.04 - 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