2025-01-02 21:19:48 +08:00
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<h1 class="post-title"><a href="https://blog.dich.bid/server-set/">乱七八糟:服务器初始化与安全</a></h1>
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<span class="post-date">
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2024-06-12
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</span>
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:: tags:
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<a class="post-tag" href="https://blog.dich.bid/tags/luan-qi-ba-zao/">#乱七八糟</a></span>
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<div class="post-content">
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<p>前言 本文记录服务器安装docker,1panel和设置禁止root登录的步骤。</p>
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<span id="continue-reading"></span><h2 id="doamin">Doamin</h2>
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<p>建站不一定需要服务器、域名和备案。尤其不要买腾讯云,不要买CN域名;备案过程要填很多个人信息,且一周没有解析网站,备案就会自动注销。</p>
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<ul>
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<li>
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<p><strong>cn 域名没有隐私保护(whois protection)</strong>。国内域名注册商说的隐私保护根本是自欺欺人,在它们隐私保护就是在自己的查询服务隐藏注册人信息。但在别的地方是能查到的,在<a href="https://whois.cnnic.cn/">中国互联网络信息中心</a>可以查到每个 cn 域名注册人的姓名和邮箱。</p>
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</li>
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<li>
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<p><strong>注册 cn 域名必须使用真实身份信息</strong>。要是你想用假信息注册来保护隐私,那就太天真了。审核的时候不会通过的。真的不想用自己的信息注册的话,要么以公司名义注册,但公司的法定代表人还是能查到的。要么叫别人注册域名之后给你用,可谁愿意冒这种风险呢。</p>
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</li>
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<li>
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<p><strong>cn 域名无法删除</strong>。如果你觉得 cn 域名暴露了你的隐私,那对不起,这是不能注销的<a href="https://cyrusyip.org/zh-cn/post/2021/05/25/damn-cn-domain/#fn:3">3</a>。你只能修改邮箱地址,然后等到它过期。或者转让给别人,不过感觉把别人推到火坑里不太好啊。</p>
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</li>
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<li>
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<p><strong>cn 域名有被停用的风险</strong>。2008 年,有人以跳水奥运冠军吴敏霞拼音注册了 wuminxia.cn,<a href="https://www.cnbeta.com/articles/tech/62209.htm">结果被中国互联网络信息中心(CNNIC)回收了域名</a>,并转交给国家体育总局。此域名在 2021 年 2 月 28 日被优视科技<a href="https://whois.cnnic.cn/WhoisServlet?queryType=Domain&domain=wuminxia.cn">注册</a>,呵呵。2009 年,牛博网被域名注册商万网停止解析。</p>
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</li>
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</ul>
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<h2 id="docker">Docker</h2>
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<ol>
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<li>安装基础工具</li>
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</ol>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo apt-get update
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</span><span> sudo apt-get install \
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</span><span> apt-transport-https \
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</span><span> ca-certificates \
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</span><span> curl \
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</span><span> gnupg \
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</span><span> lsb-release
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</span></code></pre>
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<ol start="2">
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<li>安装docker的gpg key:</li>
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</ol>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
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</span></code></pre>
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<ol start="3">
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<li>安装docker源</li>
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</ol>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>echo "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
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</span></code></pre>
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<p>上面命令中的<code>lsb_release -cs</code>返回<code>bullseye</code>,也就是debian11的代号。</p>
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<ol start="4">
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<li>安装docker</li>
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</ol>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>apt-get update
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</span><span>sudo apt-get install docker-ce docker-ce-cli containerd.io
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</span><span>sudo systemctl enable docker
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</span><span>sudo systemctl start docker
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</span></code></pre>
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<p>至此安装完成。</p>
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<p>在debian系的Linux发行版上,docker会开机启动启动。</p>
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<p>如果平时使用非root账户,又不想每次执行docker命令之前都加上sudo,参考docker的<a href="https://link.zhihu.com/?target=https%253A//docs.docker.com/engine/install/linux-postinstall/%2523manage-docker-as-a-non-root-user">文档</a>,可以添加<code>docker</code>组,并将非root账户加入到该组中。下面的命令创建<code>docker</code>组并将当前用户加入<code>docker</code>组,执行完成之后重新登陆生效:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo groupadd docker
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</span><span>sudo usermod -aG docker $USER
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</span></code></pre>
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<h3 id="shi-yong-docker-cun-chu-ku-an-zhuang">使用 Docker 存储库安装</h3>
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<p>我建议使用此方法的主要原因是您可以轻松升级,因为存储库可以轻松更新!</p>
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<p>首先,使用以下命令安装此方法的先决条件:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo apt update && sudo apt install ca-certificates curl gnupg
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</span></code></pre>
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<p>现在,让我们使用以下命令创建一个目录来存储密钥环:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo install -m 0755 -d /etc/apt/keyrings
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</span></code></pre>
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<p>接下来,使用给定的命令下载 GPG 密钥并将其存储在 <code>/etc/apt/keyrings/etc/apt/keyrings</code> 目录中:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
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</span></code></pre>
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<p>完成后,使用 chmod 命令更改 docker.gpg 文件的权限:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo chmod a+r /etc/apt/keyrings/docker.gpg
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</span></code></pre>
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<p>最后,使用以下命令为 Docker 设置存储库:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>echo \
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</span><span> "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian \
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</span><span> "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
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</span><span> sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
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</span></code></pre>
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<p>上述命令中每行末尾的额外 <code>\</code> 只是添加新行的一种方式,以便您可以轻松查看整个命令。就是这样!</p>
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<p>现在,您可以使用以下命令更新存储库索引并安装 Docker:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo apt update && sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
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</span></code></pre>
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<p>要验证 Docker 安装,您可以安装 hello-world 映像:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo docker run hello-world
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</span></code></pre>
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<p>hello-world docker 镜像很小,仅用于检查 Docker 是否运行正常。</p>
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<h3 id="shi-yong-docker-er-bu-shi-yong-sudo">使用 Docker 而不使用 sudo</h3>
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<p>如果您注意到,在运行 hello-world 映像时,我使用了 sudo。</p>
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<p>这可能不太方便。那么如何将其配置为不必使用 sudo 呢?</p>
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<p>为此,首先使用 groupadd 命令创建一个 docker 组:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo groupadd docker
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</span></code></pre>
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<p>现在,将用户添加到组(docker):</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo usermod -aG docker $USER
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</span></code></pre>
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<p>现在从终端注销并重新登录以使更改生效。</p>
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<blockquote>
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<p>如果您在虚拟机中安装 Docker,需要重新启动才能使您所做的更改生效。</p>
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</blockquote>
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<p>让我们通过运行 hello-world 图像来测试它:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>docker run hello-world
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</span></code></pre>
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<p>正如您所看到的,我无需使用 sudo 即可获得相同的结果。</p>
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<h3 id="xie-zai-docker">卸载 Docker</h3>
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<p>首先,使用以下命令停止 docker 服务:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo systemctl stop docker
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</span></code></pre>
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<p>然后按以下方式使用 apt purge 命令从系统中删除 Docker:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo apt purge docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
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</span></code></pre>
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<p>如果您打算进行全新安装或者不想拥有任何以前的数据,那么您可以使用 rm 命令删除 Docker 文件:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo rm -rf /var/lib/docker
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</span></code></pre>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo rm -rf /var/lib/containerd
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</span></code></pre>
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<p>就是这样! Docker 已成功删除。</p>
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<h2 id="1panel">1panel</h2>
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<p>执行如下命令一键安装 1Panel:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>curl -sSL https://resource.fit2cloud.com/1panel/package/quick_start.sh -o quick_start.sh && sudo bash quick_start.sh
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</span></code></pre>
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<h2 id="safe">Safe</h2>
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<h3 id="she-zhi-jin-zhi-rootzhi-jie-deng-lu">设置禁止Root直接登陆</h3>
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<p>使用root账户或已经有sudo权限的用户登录到系统。</p>
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<p>执行以下命令来创建新用户,例如,将<code>newuser</code>替换为你想要的用户名:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo adduser dich
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</span></code></pre>
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<p>接下来,将新用户添加到sudo组,以赋予sudo权限。执行以下命令:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo usermod -aG sudo dich
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</span></code></pre>
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<p>确认一下sudo权限已经生效。可以尝试使用新用户执行一个需要sudo权限的命令,如:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo ls /root
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</span></code></pre>
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<p>系统会要求输入密码,如果成功执行,说明新用户已经成功获得sudo权限。</p>
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<p>打开SSH配置文件<code>sshd_config</code>,可以使用文本编辑器如nano或vi。以下是使用nano编辑器的示例:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo vim /etc/ssh/sshd_config
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</span></code></pre>
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<p>在配置文件中找到以下行:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>#PermitRootLogin yes
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</span></code></pre>
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<p>将上述行的注释符号(#)去掉,并将<code>yes</code>改为<code>no</code>,如下所示:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>PermitRootLogin no
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</span></code></pre>
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<p>这将禁止直接使用root账户进行SSH登录。</p>
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<p>保存并关闭文本编辑器。</p>
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<p>重新启动SSH服务,以应用更改:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo service ssh restart
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</span></code></pre>
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<p>或者,如果你的系统使用systemd,可以使用以下命令:</p>
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<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo systemctl restart ssh
|
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</span></code></pre>
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<h3 id="geng-huan-sshduan-kou">更换SSH端口</h3>
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<p>使用root账户或已经有sudo权限的用户登录到系统。</p>
|
|
|
|
|
<p>打开SSH配置文件<code>sshd_config</code>,可以使用文本编辑器如nano或vi。以下是使用nano编辑器的示例:</p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo vim /etc/ssh/sshd_config
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p>在配置文件中找到以下行:</p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>Port 22
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p>这是SSH默认的端口号,你可以将其更改为你想要的任何未被占用的端口号。例如,将端口更改为2222:</p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>Port 2222
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p>保存并关闭文本编辑器。重新启动SSH服务,以应用更改:</p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo service ssh restart
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p>或者,如果你的系统使用systemd,可以使用以下命令:</p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo systemctl restart ssh
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<h3 id="an-zhuang-ufwhe-fail2ban">安装ufw和Fail2ban</h3>
|
|
|
|
|
<p><strong>1、更新软件包</strong></p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo apt update
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p><strong>2、安装 UFW</strong></p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo apt install ufw
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p><strong>3、如果你在远程位置连接你的服务器,在启用 UFW 防火墙之前,你必须显式允许进来的 SSH 连接。否则,你将永远都无法连接到机器上。</strong></p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo ufw allow 22/tcp
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<blockquote>
|
|
|
|
|
<p>如果 SSH 运行在非标准端口,你需要将上述命令中的 22 端口替换为对应的 SSH 端口。</p>
|
|
|
|
|
</blockquote>
|
|
|
|
|
<p><strong>4、放开 1Panel 系统端口。</strong></p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo ufw allow 8090/tcp
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<blockquote>
|
|
|
|
|
<p>上述命令中的 8090 端口需要替换为安装 1Panel 系统时自定义的端口。</p>
|
|
|
|
|
</blockquote>
|
|
|
|
|
<p><strong>5、启动 UFW</strong></p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo ufw enable
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p><strong>1、安装 Fail2ban</strong></p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo apt-get install fail2ban
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p><strong>2、Debian 12 及以上的版本需要手动安装 rsyslog</strong></p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo apt-get install rsyslog
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p><strong>3、启动 Fail2ban 服务</strong></p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo systemctl start fail2ban
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p><strong>4、开机自启动</strong></p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo systemctl enable fail2ban
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p><strong>5、查看 Fail2ban 服务状态。</strong></p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sudo systemctl status fail2ban
|
|
|
|
|
</span></code></pre>
|
2025-01-07 15:50:18 +08:00
|
|
|
|
<h2 id="ban-ipv6">Ban IPv6</h2>
|
|
|
|
|
<p>手动 禁用 VPS 的 IPv6 命令:</p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sysctl -w net.ipv6.conf.all.disable_ipv6=1
|
|
|
|
|
</span><span>sysctl -w net.ipv6.conf.default.disable_ipv6=1
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p>如果想重启系统也生效, 执行:</p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>echo 'net.ipv6.conf.all.disable_ipv6=1' >> /etc/sysctl.conf
|
|
|
|
|
</span><span>echo 'net.ipv6.conf.default.disable_ipv6=1' >> /etc/sysctl.conf
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p>手动 启用 VPS 的 IPv6 命令:</p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sysctl -w net.ipv6.conf.all.disable_ipv6=0
|
|
|
|
|
</span><span>sysctl -w net.ipv6.conf.default.disable_ipv6=0
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p>重新载入 sysctl 配置</p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>sysctl --system # reload sysctl
|
|
|
|
|
</span></code></pre>
|
|
|
|
|
<p>如果重载, 还无效果, 可能要 reboot 重启下.
|
|
|
|
|
查看 VPS 的 IPv6 信息</p>
|
|
|
|
|
<pre style="background-color:#151515;color:#e8e8d3;"><code><span>ip -6 addr show scope global
|
|
|
|
|
</span><span>
|
|
|
|
|
</span><span>或者 curl ipv6.ip.sb
|
|
|
|
|
</span></code></pre>
|
2025-01-02 21:19:48 +08:00
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