コマンドラインツールを使用して Linux サーバーのセキュリティを向上させる

# 安装 Fail2Ban
sudo apt-get update
sudo apt-get install fail2ban
# 配置 Fail2Ban
sudo cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local
sudo vi /etc/fail2ban/jail.local
# 修改配置文件，设置需要监控和封锁的行为规则
[sshd]
enabled = true
port = ssh
filter = sshd
logpath = /var/log/auth.log
maxretry = 3
bantime = 3600
# 重启 Fail2Ban 服务
sudo systemctl restart fail2ban

# 安装 ClamAV
sudo apt-get update
sudo apt-get install clamav
# 更新病毒数据库
sudo freshclam
# 扫描指定目录
sudo clamscan -r /path/to/directory
# 或扫描全盘
sudo clamscan -r /
# 删除发现的恶意文件
sudo clamscan -r --remove /path/to/directory

# 安装 Lynis
sudo apt-get update
sudo apt-get install lynis
# 运行 Lynis
sudo lynis audit system

# 安装 OpenVAS
sudo apt install openvas
# 配置和初始化 OpenVAS
sudo greenbone-nvt-sync
sudo greenbone-scapdata-sync
sudo greenbone-certdata-sync
sudo openvasmd --create-user=admin
sudo openvasmd --user=admin --new-password=myadminpassword
sudo openvas-manage-certs -a
sudo openvasmd --rebuild
# 启动 OpenVAS 服务
sudo openvas-start
# 访问 OpenVAS Web 界面
http://localhost:9392

PermitRootLogin no
PasswordAuthentication no
AllowUsers your_username
Port 2200