92 lines
2.0 KiB
Bash
92 lines
2.0 KiB
Bash
#!/bin/bash
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# 获取命令行参数
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while getopts "4:6:" opt; do
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case $opt in
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4) ALLOWED_IPV4="$OPTARG"
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;;
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6) ALLOWED_IPV6="$OPTARG"
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;;
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\?) echo "无效的参数: -$OPTARG" >&2
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exit 1
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;;
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esac
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done
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# 检查是否提供了IP地址
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if [ -z "$ALLOWED_IPV4" ] && [ -z "$ALLOWED_IPV6" ]; then
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echo "必须指定IPv4或IPv6地址"
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exit 1
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fi
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# 更新包管理器并安装 iptables-persistent 以便在重启后保存规则
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install_iptables() {
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echo "正在安装iptables..."
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apt-get update
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apt-get install -y iptables ip6tables iptables-persistent
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}
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# 配置 ufw
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configure_ufw() {
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echo "配置ufw规则"
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# 移除现有的22端口规则
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ufw delete allow 22/tcp
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# 允许指定IP地址访问22端口
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if [ -n "$ALLOWED_IPV4" ]; then
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ufw allow from $ALLOWED_IPV4 to any port 22 proto tcp
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fi
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if [ -n "$ALLOWED_IPV6" ]; then
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ufw allow from $ALLOWED_IPV6 to any port 22 proto tcp
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fi
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# 启用ufw
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ufw reload
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# 显示当前的ufw状态
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ufw status verbose
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}
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# 配置 iptables
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configure_iptables() {
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echo "配置iptables规则"
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# 移除现有的22端口规则
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iptables -D INPUT -p tcp --dport 22 -j ACCEPT
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ip6tables -D INPUT -p tcp --dport 22 -j ACCEPT
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# 允许指定IP地址访问22端口
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if [ -n "$ALLOWED_IPV4" ]; then
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iptables -A INPUT -p tcp -s $ALLOWED_IPV4 --dport 22 -j ACCEPT
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fi
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if [ -n "$ALLOWED_IPV6" ]; then
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ip6tables -A INPUT -p tcp -s $ALLOWED_IPV6 --dport 22 -j ACCEPT
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fi
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# 保存iptables规则
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iptables-save > /etc/iptables/rules.v4
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ip6tables-save > /etc/iptables/rules.v6
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# 使规则在重启后生效
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netfilter-persistent save
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netfilter-persistent reload
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}
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# 检查是否安装了ufw或iptables
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if command -v ufw &> /dev/null
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then
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configure_ufw
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elif command -v iptables &> /dev/null
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then
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configure_iptables
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else
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echo "没有安装ufw或iptables，正在安装iptables..."
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install_iptables
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configure_iptables
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fi
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echo "防火墙规则配置完成"
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