Ubuntu 16.04 64位 VPS 安全配置指南

在使用 Ubuntu 16.04 64位虚拟服务器（VPS）时，安全性是确保网络环境稳定运行的关键，以下将详细介绍如何从多个方面加强你的 VPS 安全性。

安装必要的安全工具

1 安装渗透测试工具

为了检测潜在的安全漏洞，建议安装 OpenVAS（Open Source vulnerability Assessment System）,它是一个功能强大的渗透测试工具。

sudo apt update
sudo apt install -y openvas-client
sudo apt install -y openvas-server

2 安装防火墙

Ubuntu 16.04 内置了 UFW（Unified Firewall）,它能有效地限制外部访问。

sudo apt update
sudo apt install -y ufw
sudo ufw enable
sudo ufw allow-root
sudo ufw --now

配置安全组

安全组是限制外部流量的有力工具,可以阻止不必要的网络流量。

sudo apt update
sudo apt install -y networkDiscovery
sudo networkDiscovery --install
sudo nano /etc/sysctl.conf

编辑 /etc/sysctl.conf 文件,添加以下内容：

net.ipv4.ip_forward=1

然后重启系统：

sudo systemctl restart net

配置虚拟防火墙（VMW）

虚拟防火墙（VMW）是一个在虚拟机内运行的防火墙,可以隔离虚拟机与其他网络设备之间的连接。

sudo apt update
sudo apt install -y vmw
sudo vmw enable
sudo vmw allow-root
sudo vmw --now

配置自动备份

定期备份数据和配置文件是防止数据丢失的重要措施。

sudo apt update
sudo apt install -y rsync
sudo apt install -y bup
sudo apt install -y bgp2
sudo apt install -y automerge
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