#!/bin/bash
# iptables Port Forwarding Manager
# Author: sysadmin
# Version: 2.0
# Date: 2025-06-15

RULES_FILE="/etc/iptables.rules.v4"

# 检查 root 权限
check_root() {
    if [ "$EUID" -ne 0 ]; then
        echo "✘ 请使用 root 权限运行此脚本"
        exit 1
    fi
}

# 启用 IP 转发
enable_ip_forward() {
    if grep -q "net.ipv4.ip_forward=1" /etc/sysctl.conf; then
        echo "✓ IP 转发已启用"
    else
        echo ...