大改編 1.5.9

なるべく生IP維持

README.md

@@ -1,37 +1,41 @@
 
-このプロジェクトは、iptablesのルールを編集するためのスクリプトです。以下が使用方法とライセンス情報です。
+このプロジェクトは、nftablesのルールを編集するためのスクリプトです。以下が使用方法とライセンス情報です。
 
 ---
 
 ### 概要  
-このツールは、`iptables`のルールを編集する際のスクリプトであり、一時ファイルを作成し、エディタでルールを編集する処理を含みます。
+このツールは、`nftables`のルールを編集する際のスクリプトです。
 
 ---
 
 ### 使用方法  
-1. **ルールの編集**  
+**ルールの編集**  
    ```bash
-	ipf 11434:10.1.1.2:11434          # Forward local port 11434 to 10.1.1.2:11434
-	ipf -L                            # List all rules with numbers
-	ipf -d 1                          # Delete rule number 1
-	ipf -d 1 -q                       # Delete rule number 1 (quiet mode)
-	ipf -v                            # Show current iptables rules by iptables-save
-	ipf -e                            # Edit all rules in editor and restore
-   ```
-   ipf -e で一時ファイルが作成され、エディタ（例: `nano`）でルールを編集できます。編集が完了した後、一時ファイルは自動的に削除されます [1]。
+   Usage: ipfn [OPTIONS] [RULES]
 
-2. **バージョン情報の表示**  
-   ```bash
-	ipf --version     		  # Show version information
+	Rules Format:
+	80:10.10.100.5:8080   Full (LocalPort:TargetIP:TargetPort)
+	80:8080               IP defaults to 127.0.0.1
+	11434                 Map same port to 127.0.0.1
+
+	Options:
+	-l, -L                List all rules
+	-d HANDLE/:PORT/all   Delete specific rules or '*' for all
+	-R                    Reset: Clear ALL rules immediately
+	-q                    Quiet mode (No output, Auto-yes)
+	-t [HANDLE]           Test connectivity
+	-f                    Enable IP forward & Bridge tuning / Skip test
+	-v                    Verbose (raw nftables output)
+	-h                    Show this help
    ```
-   これにより、ソフトウェアのバージョンとライセンス情報が表示されます [1]。
+
 
 ---
 
 ### ライセンス  
 MIT License に基づくライセンスです。  
 **権利者**: krasherjoe  
-**日付**: 2025-10-26  
+**日付**: 2026-01-22  
 
 ---
 

cockpit.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+import sys, tty, termios, subprocess, re, time
+
+# [2026-01-16] ipf Multi-Brain Cockpit by Gemini3.0flash
+# OS: Linuxmintmate 22.1 / Server: Proxmo\x
+
+def get_key():
+    fd = sys.stdin.fileno()
+    old_settings = termios.tcgetattr(fd)
+    try:
+        tty.setraw(sys.stdin.fileno())
+        ch = sys.stdin.read(1)
+    finally:
+        termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+    return ch
+
+def get_status(targets):
+    """ipf -l の実体から現在の接続先を特定してラベルを返す"""
+    try:
+        res = subprocess.run(["ipf", "-l"], capture_output=True, text=True)
+        for line in res.stdout.splitlines():
+            if "11434" in line:
+                for key, label, port in targets:
+                    if port in line:
+                        return f"\033[1;32m[{label}]\033[0m"
+        return "\033[1;31m[UNKNOWN]\033[0m"
+    except: return "???"
+
+def safe_switch(target_port):
+    """iptables/ipfのインデックスを掃除して張り直す"""
+    while True:
+        res = subprocess.run(["ipf", "-l"], capture_output=True, text=True)
+        idx = next((re.search(r'^(\d+):', l).group(1) for l in res.stdout.splitlines() if "11434" in l), None)
+        if not idx: break
+        subprocess.run(["ipf", "-d", idx], stdout=subprocess.DEVNULL)
+        time.sleep(0.05)
+    subprocess.run(["ipf", f"11434:127.0.0.1:{target_port}"], stdout=subprocess.DEVNULL)
+
+def main():
+    # 引数から設定を動的に生成 (形式: key:label:port)
+    # 例: 1:3b:11431 2:7b:11432
+    if len(sys.argv) < 2:
+        print("Usage: cockpit.py <key:label:port> ...")
+        sys.exit(1)
+
+    targets = [arg.split(':') for arg in sys.argv[1:]]
+    mapping = {t[0]: (t[1], t[2]) for t in targets}
+
+    # 画面を1行に固定してスタイリッシュに表示
+    try:
+        while True:
+            cur_label = get_status(targets)
+            menu = " ".join([f"{k}:{l}" for k, l, p in targets])
+            
+            # 計器のようなデザイン
+            sys.stdout.write(f"\r\033[K \033[1;34mBRAIN_CTRL\033[0m >> {menu} | \033[1;35mACTIVE\033[0m >> {cur_label} ")
+            sys.stdout.flush()
+
+            key = get_key()
+            if key in mapping:
+                safe_switch(mapping[key][1])
+            elif key == 'q':
+                break
+    except KeyboardInterrupt: pass
+    print("\n")
+
+if __name__ == "__main__":
+    main()

ipf

@@ -0,0 +1,320 @@
+#!/bin/bash
+# Name: ipf
+# Version: 1.5.9
+# Date: 2026-01-22
+# Description: Full feature set. Includes conflict prevention, fixed -t parsing, and -f logic.
+
+# Root check
+if [ "$(id -u)" -ne 0 ]; then
+    exec sudo "$0" "$@"
+fi
+
+# Global Variables
+TABLE_NAME="ipf"
+VERSION="1.5.9"
+PROTO="tcp"
+FORCE_FLAG=false 
+SKIP_TEST=false
+QUIET_MODE=false
+RESET_MODE=false
+
+# --- 1. Core Functions ---
+
+msg() {
+    [[ "$QUIET_MODE" == false ]] && echo -e "$@"
+}
+
+enable_forwarding() {
+    msg "\e[34m[System]\e[0m Enabling IP forwarding and localnet routing..."
+    sysctl -w net.ipv4.ip_forward=1 >/dev/null
+    # Enable route_localnet for all interfaces to allow forwarding to 127.0.0.1
+    for dev in /proc/sys/net/ipv4/conf/*/route_localnet; do
+        echo 1 > "$dev" 2>/dev/null
+    done
+}
+
+init_nft() {
+    nft add table inet "${TABLE_NAME}" 2>/dev/null
+    nft add chain inet "${TABLE_NAME}" prerouting { type nat hook prerouting priority -100 \; } 2>/dev/null
+    nft add chain inet "${TABLE_NAME}" output { type nat hook output priority -100 \; } 2>/dev/null
+    nft add chain inet "${TABLE_NAME}" postrouting { type nat hook postrouting priority 100 \; } 2>/dev/null
+    nft add chain inet "${TABLE_NAME}" forward { type filter hook forward priority 0 \; policy accept \; } 2>/dev/null
+}
+
+get_total_packets() {
+    local uuid=$1
+    local total=0
+    local counts=$(nft list table inet "${TABLE_NAME}" 2>/dev/null | grep "$uuid" | grep -o 'packets [0-9]*' | awk '{print $2}')
+    for c in $counts; do
+        total=$((total + c))
+    done
+    echo "$total"
+}
+
+test_connection() {
+    # Crucial: Argument order for nc (options first, then target)
+    nc -z -w 1 "$1" "$2" >/dev/null 2>&1
+    return $?
+}
+
+delete_by_handle() {
+    local h=$1
+    # Find UUID associated with this handle
+    local uuid=$(nft -a list chain inet "${TABLE_NAME}" prerouting 2>/dev/null | grep "handle $h" | grep -o 'ipf-id:[a-z0-9-]*')
+    
+    if [[ -z "$uuid" ]]; then
+        return 1
+    fi
+
+    # Delete rules in all chains that share this UUID
+    local chains=("prerouting" "output" "forward" "postrouting")
+    for c in "${chains[@]}"; do
+        nft -a list chain inet "${TABLE_NAME}" "$c" 2>/dev/null | grep "$uuid" | grep -o 'handle [0-9]*' | awk '{print $2}' | while read -r rh; do
+            nft delete rule inet "${TABLE_NAME}" "$c" handle "$rh"
+        done
+    done
+    return 0
+}
+
+test_strict_handle() {
+    local h=$1
+    local info=$(nft -a list chain inet "${TABLE_NAME}" prerouting 2>/dev/null | grep "handle $h")
+    
+    if [[ -z "$info" ]]; then
+        echo -e "Handle $h \e[31mNOT FOUND\e[0m"
+        return
+    fi
+    
+    local lp=$(echo "$info" | grep -o 'dport [0-9]*' | awk '{print $2}')
+    local target=$(echo "$info" | grep -oE 'to ([0-9.]+|\[[0-9a-fA-F:]+\]):[0-9]+' | awk '{print $2}')
+    local tip=$(echo "$target" | cut -d':' -f1 | tr -d '[]')
+    local tp=$(echo "$target" | cut -d':' -f2)
+    local uuid=$(echo "$info" | grep -o 'ipf-id:[a-z0-9-]*')
+    local short_id=$(echo "$uuid" | cut -d':' -f2 | cut -c1-8)
+
+    echo -n "Testing handle $h (Local :$lp -> Target $tip:$tp) [${short_id}]... "
+    local count_before=$(get_total_packets "$uuid")
+    
+    if test_connection "$tip" "$tp"; then
+        # Actual trigger test via localhost
+        nc -z -w 1 127.0.0.1 "$lp" >/dev/null 2>&1
+        sleep 0.1
+        local count_after=$(get_total_packets "$uuid")
+        if (( count_after > count_before )); then
+            echo -e "\e[32mPASSED\e[0m"
+        else
+            echo -e "\e[33mSKIPPED (Check other rules)\e[0m"
+        fi
+    else
+        echo -e "\e[31mOFFLINE (Target Down)\e[0m"
+    fi
+}
+
+list_rules() {
+    [[ "$QUIET_MODE" == true ]] && return
+    local highlight_uuid=$1
+    init_nft
+    msg "Forwarding Rules (ipf):"
+    printf "%-10s %-6s %-20s %-20s %-10s\n" "HANDLE" "PROTO" "LOCAL" "TARGET" "UUID"
+    echo "-----------------------------------------------------------------------------------"
+    
+    nft -a list chain inet "${TABLE_NAME}" prerouting 2>/dev/null | grep "dnat" | while read -r line; do
+        local handle=$(echo "$line" | grep -o 'handle [0-9]*' | awk '{print $2}')
+        local proto=$(echo "$line" | grep -q "udp" && echo "udp" || echo "tcp")
+        local target=$(echo "$line" | grep -oE '([0-9.]+|\[[0-9a-fA-F:]+\]):[0-9]+' | head -n 1)
+        local lport=$(echo "$line" | grep -o 'dport [0-9]*' | awk '{print $2}')
+        local full_uuid=$(echo "$line" | grep -o 'ipf-id:[a-z0-9-]*' | cut -d':' -f2)
+        
+        if [[ -n "$highlight_uuid" && "$full_uuid" == "$highlight_uuid" ]]; then
+            printf "\e[1;36m*%-9s %-6s %-20s %-20s %-10s\e[0m\n" "$handle" "$proto" ":$lport" "$target" "${full_uuid:0:8}"
+        else
+            printf " %-9s %-6s %-20s %-20s %-10s\n" "$handle" "$proto" ":$lport" "$target" "${full_uuid:0:8}"
+        fi
+    done
+}
+
+add_rule() {
+    local raw=$1
+    init_nft
+    [[ "$FORCE_FLAG" == true ]] && enable_forwarding
+
+    # Parsing
+    if [[ "$raw" =~ ^([0-9]+):([0-9\.]+):([0-9]+)$ ]]; then
+        lp=${BASH_REMATCH[1]}; tip=${BASH_REMATCH[2]}; tp=${BASH_REMATCH[3]}
+    elif [[ "$raw" =~ ^([0-9]+):([0-9]+)$ ]]; then
+        lp=${BASH_REMATCH[1]}; tip="127.0.0.1"; tp=${BASH_REMATCH[2]}
+    elif [[ "$raw" =~ ^([0-9]+)$ ]]; then
+        lp=${BASH_REMATCH[1]}; tip="127.0.0.1"; tp=${BASH_REMATCH[1]}
+    else
+        msg "\e[31mError: Invalid rule format '$raw'\e[0m"
+        return 1
+    fi
+
+    # --- Conflict Management ---
+    # Delete any existing rules using the same local port to prevent shadowing
+    local existing_h=$(nft -a list chain inet "${TABLE_NAME}" prerouting 2>/dev/null | grep "dport $lp" | grep -o 'handle [0-9]*' | awk '{print $2}')
+    for eh in $existing_h; do
+        delete_by_handle "$eh"
+    done
+
+    # UUID Generation
+    local u_raw=$(cat /proc/sys/kernel/random/uuid)
+    local u="ipf-id:$u_raw"
+    local fam="ip"
+    [[ "$tip" =~ : ]] && fam="ip6"
+    
+    # Rule Insertion (using insert to stay at the top)
+    nft insert rule inet "${TABLE_NAME}" prerouting "$PROTO" dport "$lp" counter dnat $fam to "$tip:$tp" comment "\"$u\""
+    nft insert rule inet "${TABLE_NAME}" output "$PROTO" dport "$lp" counter dnat $fam to "$tip:$tp" comment "\"$u\""
+    nft insert rule inet "${TABLE_NAME}" forward $fam daddr "$tip" "$PROTO" dport "$tp" ct state new,established,related accept comment "\"$u\""
+    nft insert rule inet "${TABLE_NAME}" forward $fam saddr "$tip" "$PROTO" sport "$tp" ct state established,related accept comment "\"$u\""
+    nft insert rule inet "${TABLE_NAME}" forward iifname "lo" accept comment "\"$u\""
+    nft insert rule inet "${TABLE_NAME}" postrouting $fam daddr "$tip" "$PROTO" dport "$tp" masquerade comment "\"$u\""
+    
+    list_rules "$u_raw"
+    
+    # Auto-test unless forced
+    if [[ "$SKIP_TEST" == false && "$FORCE_FLAG" == false ]]; then
+        local new_h=$(nft -a list chain inet "${TABLE_NAME}" prerouting 2>/dev/null | grep "$u_raw" | grep -o 'handle [0-9]*' | awk '{print $2}')
+        echo ""
+        test_strict_handle "$new_h"
+    fi
+}
+
+all_clear() {
+    if [[ "$FORCE_FLAG" == false ]]; then
+        echo -e "\e[33mWarning: This will delete ALL ipf rules.\e[0m"
+        read -p "Are you sure? (y/N): " confirm
+        [[ ! "$confirm" =~ ^[yY]$ ]] && exit 0
+    fi
+    nft delete table inet "${TABLE_NAME}" 2>/dev/null
+    init_nft
+    msg "All ipf rules cleared."
+    list_rules
+    exit 0 
+}
+
+show_help() {
+    echo "ipf version ${VERSION}"
+    echo "Usage: ipf [OPTIONS] [RULE]"
+    echo ""
+    echo "Options:"
+    echo "  -f                    Kernel: Enable forwarding & route_localnet"
+    echo "                        Global: Acts as 'Force' (Skips confirmation & tests)"
+    echo "  -l, -L                List all forwarding rules"
+    echo "  -d HANDLE/:PORT/all   Delete rule (Add -f to skip confirmation)"
+    echo "  -R                    Reset: Clear ALL rules (Add -f to skip confirmation)"
+    echo "  -t [TARGET]           Test connectivity (Handle, :Port, or IP:Port)"
+    echo "  -y                    Same as -f (Force/Yes)"
+    echo "  -q                    Quiet mode (implies -f)"
+    echo "  -v, --version         Show version"
+    echo "  -h, --help            Show this help message"
+}
+
+# --- 2. Flag Pre-processing ---
+
+for arg in "$@"; do
+    if [[ "$arg" =~ q ]]; then QUIET_MODE=true; FORCE_FLAG=true; SKIP_TEST=true; fi
+    if [[ "$arg" =~ f ]]; then FORCE_FLAG=true; SKIP_TEST=true; fi
+    if [[ "$arg" =~ y ]]; then FORCE_FLAG=true; SKIP_TEST=true; fi
+    [[ "$arg" == "-R" ]] && RESET_MODE=true
+done
+
+if [[ "$RESET_MODE" == true ]]; then all_clear; fi
+if [[ $# -eq 0 ]]; then list_rules; exit 0; fi
+
+# --- 3. Main Loop ---
+
+while [[ $# -gt 0 ]]; do
+    case "$1" in
+        -h|--help) show_help; exit 0 ;;
+        -l|-L) list_rules; exit 0 ;;
+        -v|--version) echo "ipf version ${VERSION}"; exit 0 ;;
+        -f|-y|-q) 
+            [[ "$1" == "-f" ]] && enable_forwarding
+            shift
+            [[ $# -eq 0 ]] && exit 0
+            continue 
+            ;;
+        -*[d]*)
+            # Handle combined flags like -fd or -qd
+            h_str=$(echo "$1" | sed -E 's/^-q?d?f?y?//')
+            if [[ -z "$h_str" ]]; then
+                h_str="$2"
+                shift
+            fi
+            
+            if [[ "$h_str" == "all" || "$h_str" == "*" ]]; then
+                all_clear
+            fi
+
+            # Collect handles to delete
+            handles=()
+            IFS=',' read -r -a parts <<< "$h_str"
+            for part in "${parts[@]}"; do
+                if [[ "$part" =~ ^:([0-9]+)$ ]]; then
+                    p="${BASH_REMATCH[1]}"
+                    # Find all handles for this local port
+                    for h in $(nft -a list chain inet "${TABLE_NAME}" prerouting 2>/dev/null | grep "dport $p" | grep -o 'handle [0-9]*' | awk '{print $2}'); do
+                        handles+=("$h")
+                    done
+                else
+                    handles+=("$part")
+                fi
+            done
+
+            for h in "${handles[@]}"; do
+                if delete_by_handle "$h"; then
+                    msg "Deleted handle $h"
+                else
+                    msg "\e[31mError: Handle $h not found\e[0m"
+                fi
+            done
+            list_rules
+            exit 0 
+            ;;
+        -t*)
+            h_str="${1#-t}"
+            if [[ -z "$h_str" ]]; then
+                h_str="$2"
+                shift
+            fi
+            
+            # Pattern matching for different test types
+            if [[ "$h_str" =~ ^([0-9\.]+):([0-9]+)$ ]]; then
+                # IP:PORT test
+                tip=${BASH_REMATCH[1]}; tp=${BASH_REMATCH[2]}
+                echo -n "Checking Target $tip:$tp... "
+                test_connection "$tip" "$tp" && echo -e "\e[32mUP\e[0m" || echo -e "\e[31mDOWN\e[0m"
+            elif [[ "$h_str" =~ ^:([0-9]+)$ ]]; then
+                # :PORT test (local)
+                p="${BASH_REMATCH[1]}"
+                echo -n "Checking Local :$p... "
+                nc -z -w 1 127.0.0.1 "$p" >/dev/null 2>&1 && echo -e "\e[32mOK\e[0m" || echo -e "\e[31mOFFLINE\e[0m"
+            elif [[ "$h_str" =~ ^[0-9]+$ ]]; then
+                # Handle test
+                test_strict_handle "$h_str"
+            else
+                # Default: test the first rule found
+                top_h=$(nft -a list chain inet "${TABLE_NAME}" prerouting 2>/dev/null | grep "dnat" | head -n 1 | grep -o 'handle [0-9]*' | awk '{print $2}')
+                if [[ -n "$top_h" ]]; then
+                    test_strict_handle "$top_h"
+                else
+                    msg "\e[31mError: No valid test target found for '$h_str'\e[0m"
+                fi
+            fi
+            exit 0 
+            ;;
+        [0-9]*)
+            # Positional argument as a rule
+            add_rule "$1"
+            exit 0 
+            ;;
+        *)
+            msg "\e[31mError: Unknown option '$1'\e[0m"
+            show_help
+            exit 1 
+            ;;
+    esac
+    shift
+done

ipf-safe-control.py

@@ -0,0 +1,88 @@
+#!/usr/bin/env python3
+# [2026-01-16] ipf Monitor & Switch Panel
+# Client: Linuxmintmate 22.1 / Server: Proxmox
+# Logic: Always show mapping from 'ipf -l' and switch with single key.
+
+import subprocess
+import sys
+import tty
+import termios
+import re
+import time
+import threading
+
+# 接続先の定義
+BRAINS = {
+    '1': ('pve1-3B ', '11431'),
+    '2': ('pve2-7B ', '11432'),
+    '3': ('pve3-14B', '11433')
+}
+
+def get_key():
+    fd = sys.stdin.fileno()
+    old_settings = termios.tcgetattr(fd)
+    try:
+        tty.setraw(sys.stdin.fileno())
+        ch = sys.stdin.read(1)
+    finally:
+        termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
+    return ch
+
+def get_mapping_status():
+    """ipf -l から 11434 の現在の接続先を解析する"""
+    try:
+        res = subprocess.run(["ipf", "-l"], capture_output=True, text=True)
+        # 出力例 "1: 127.0.0.1:11434 -> 127.0.0.1:11432" を想定
+        for line in res.stdout.splitlines():
+            if "11434" in line:
+                # 矢印の先のポート番号を抽出
+                match = re.search(r'->.*?(\d+)$', line.strip())
+                if match:
+                    port = match.group(1)
+                    # 逆引きして名前を出す
+                    for k, v in BRAINS.items():
+                        if v[1] == port: return f"\033[1;32m{v[0]}\033[0m ({port})"
+                    return f"\033[1;36mUnknown\033[0m ({port})"
+    except: pass
+    return "\033[1;31mDISCONNECTED\033[0m"
+
+def safe_switch(target_port):
+    """削除・確認・追加のシーケンス"""
+    while True:
+        res = subprocess.run(["ipf", "-l"], capture_output=True, text=True)
+        idx = None
+        for line in res.stdout.splitlines():
+            if "11434" in line:
+                m = re.search(r'^(\d+):', line.strip())
+                if m: idx = m.group(1); break
+        if not idx: break
+        subprocess.run(["ipf", "-d", idx], stdout=subprocess.DEVNULL)
+        time.sleep(0.05)
+    
+    subprocess.run(["ipf", f"11434:127.0.0.1:{target_port}"], stdout=subprocess.DEVNULL)
+
+def main():
+    print("\033[2J\033[H") # 画面クリア
+    try:
+        while True:
+            # 現在の状態を取得
+            current = get_mapping_status()
+            
+            # 最小限の1行表示
+            sys.stdout.write(f"\r\033[K[1:3B 2:7B 3:14B] ACTIVE: {current}  | Key? (q:quit)")
+            sys.stdout.flush()
+
+            # キー入力を待つ (非同期にするほどでもないので、短いタイムアウトで回すのもありですが、
+            # ひとまず「入力があったら更新」の形にします)
+            # 常に最新にしたい場合は、別のスレッドで get_mapping_status を回すと良いです
+            key = get_key()
+            if key in BRAINS:
+                safe_switch(BRAINS[key][1])
+            elif key == 'q':
+                print("\nClosed.")
+                break
+    except KeyboardInterrupt:
+        pass
+
+if __name__ == "__main__":
+    main()

ipf1.0.4

@@ -1,395 +0,0 @@
-#!/bin/bash
-
-# sudo権限で実行されているか確認し、そうでなければsudoで再実行
-if [ "$(id -u)" -ne 0 ]; then
-    exec sudo "$0" "$@"
-fi
-
-# グローバル変数
-RULES_FILE="/tmp/iptables_forward_rules"
-QUIET=false
-PROTO="tcp"   # デフォルトプロトコル
-
-# コンテナ環境検出関数
-is_container() {
-    # systemd-detect-virt を使用してコンテナ環境を検出
-    if command -v systemd-detect-virt &> /dev/null; then
-        if systemd-detect-virt --quiet | grep -qE "container|vm"; then
-            return 0  # コンテナまたは仮想マシン環境
-        fi
-    fi
-
-    # lxc-checkconfig を使用して LXC コンテナを検出 (systemd-detect-virt がない場合)
-    if command -v lxc-checkconfig &> /dev/null; then
-        if lxc-checkconfig 2>&1 | grep -q "Running in an LXC container"; then
-            return 0 # LXC コンテナ環境
-        fi
-    fi
-
-    # その他 (LXD など) のコンテナ環境検出方法を追加可能
-
-    return 1 # コンテナ環境ではない
-}
-
-
-# ヘルプ表示
-show_help() {
-    cat << EOF
-Usage: ipf [OPTIONS] [PORT:IP:PORT | -L | -d RULE_NUMBER]
-
-Examples:
-  ipf 11434:10.1.1.2:11434          # Forward local port 11434 to 10.1.1.2:11434
-  ipf -L                            # List all rules with numbers
-  ipf -d 1                          # Delete rule number 1
-  ipf -d 1 -q                       # Delete rule number 1 (quiet mode)
-  ipf -v                            # Show current iptables rules by iptables-save
-  ipf -e                            # Edit all rules in editor and restore
-  ipf -f                            # Enable IP forwarding
-  ipf -t 1                          # Test rule number 1
-  ipf -t 11434:10.10.1.2:11434      # Test rule by specification
-  ipf -p udp 11434:10.1.1.2:11434   # Forward using UDP
-
-Options:
-  -h, --help     Show this help message
-  -L, -l         List all rules
-  -d NUM         Delete rule by number
-  -q             Quiet mode (no output)
-  -v             Show current iptables rules (via iptables-save)
-  -e             Edit all rules in editor and restore
-  -f             Enable IP forwarding and localnet routing
-  -t ARG          Test connectivity for rule number or PORT:IP:PORT
-  -p PROTO        Specify protocol (tcp|udp) for the following rule
-  --version      Show version information
-
-NOTE:
-  All port forwarding is performed using DNAT only.  No MASQUERADE (SNAT) is applied,
-  so the original source IP of the client is preserved.  This ensures that
-  fail2ban logs the correct client IP on the destination server.
-EOF
-}
-
-# バージョン情報を表示
-show_version() {
-    cat << EOF
-ipf ver.1.0.4
-Date: 2025-10-26
-Created by: qwen3/gpt-oss/gemini-2.5-pro and krasherjoe
-
----
-MIT License
-
-Copyright (c) 2025 krasherjoe
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
----
-
-** WARNING / 注意 **
-This script operates with administrative privileges (sudo) to modify your system's
-firewall (iptables) rules. Incorrect use, especially with the -e (edit) option,
-can disrupt your network connectivity or overwrite existing security rules.
-Please use with caution and understand the changes you are making.
-
-このスクリプトは管理者権限(sudo)で動作し、システムのファイアウォール(iptables)ルールを
-直接変更します。特に -e (編集) オプションの誤った使用は、ネットワーク接続を中断させたり、
-既存のセキュリティルールを上書きする危険性があります。
-コンテナ環境ではMASQUERADEを使用するため、クライアントの元のIPアドレスが隠蔽されます。
-これにより、fail2banなどのツールが不正な行為者を正しく識別し、ブロックできなくなる可能性があります。
-セキュリティへの影響を考慮してください。
-内容をよく理解した上で、注意して使用してください。
-EOF
-}
-
-# エラーメッセージを表示
-error() {
-    echo "Error: $*" >&2
-    logger -p user.err "ipf: $*"
-    exit 1
-}
-
-# ルールの保存
-save_rules() {
-    iptables-save > "$RULES_FILE"
-}
-
-# ルールの読み込み
-load_rules() {
-    if [[ -f "$RULES_FILE" ]]; then
-        iptables-restore < "$RULES_FILE"
-    fi
-}
-
-# ルール番号と内容をリスト表示
-list_rules() {
-    local i=1
-    echo "Forwarding rules:"
-    iptables -t nat -L PREROUTING -n -v --line-numbers | grep -E '^[0-9]+' | while read -r line; do
-        echo "$i: $line"
-        ((i++))
-    done
-}
-
-# ルールを削除
-delete_rule() {
-    local num=$1
-    if ! [[ "$num" =~ ^[0-9]+$ ]]; then
-        error "Invalid rule number: $num"
-    fi
-
-    # ユーザーへの表示用に整形されたルール行を取得
-    local rule_line_verbose=$(iptables -t nat -L PREROUTING --line-numbers | grep -E "^$num\s+" | head -n 1)
-    if [[ -z "$rule_line_verbose" ]]; then
-        error "No rule found with number: $num"
-    fi
-
-    # パース用に-nオプションを付けたルール行を取得
-    local rule_line_numeric=$(iptables -t nat -L PREROUTING -n --line-numbers | grep -E "^\s*$num\s+" | head -n 1)
-    if [[ -z "$rule_line_numeric" ]]; then
-        error "Could not find numeric rule for number: $num" # Should not happen
-    fi
-
-    # ルールから詳細を抽出 (sedを使い、より堅牢に)
-    local line_details=$(echo "$rule_line_numeric" | sed -n 's/.*\(tcp\|udp\).*dpt:\([0-9]*\).*to:\([0-9.]*\):\([0-9]*\).*/\1 \2 \3 \4/p')
-    if [[ -z "$line_details" ]]; then
-        error "Could not parse rule details from line: $rule_line_numeric"
-    fi
-    read -r proto local_port target_ip target_port <<< "$line_details"
-
-    # 1. PREROUTING ルールを番号で削除
-    if ! iptables -t nat -D PREROUTING "$num"; then
-        error "Failed to delete PREROUTING rule $num"
-    fi
-
-    # 2. 対応する OUTPUT ルールをすべて削除
-    while iptables -t nat -D OUTPUT -p "$proto" -m "$proto" --dport "$local_port" -j DNAT --to-destination "$target_ip:$target_port" >/dev/null 2>&1; do :; done
-
-    # 3. 対応する FORWARD ルールをすべて削除
-    while iptables -D FORWARD -p "$proto" -m "$proto" -d "$target_ip" --dport "$target_port" -j ACCEPT >/dev/null 2>&1; do :; done
-
-    # 4. 確立済み通信を許可するルールを削除 (存在確認後に削除)
-    if iptables -C FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT 2>/dev/null; then
-        iptables -D FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT >/dev/null 2>&1
-    fi
-
-    if ! $QUIET; then
-        echo "Deleted rule $num: $rule_line_verbose"
-    fi
-}
-
-# ポートフォワーディングルールを追加
-add_rule() {
-    # IPフォワーディングが有効かチェック
-    if [[ $(sysctl -n net.ipv4.ip_forward) -ne 1 ]]; then
-        error "IP forwarding is disabled. Please enable it by running: ipf -f"
-    fi
-
-    local container_env=$(is_container)
-    if [[ $container_env -eq 0 ]]; then
-        echo -e "\e[33mDetected container environment.  MASQUERADE is enabled, which hides the original client IP address.  This will prevent tools like fail2ban from correctly identifying and blocking malicious actors. Consider the security implications.\e[0m" # コンテナ環境であることを示すメッセージ
-    fi
-
-    # 確立済みの通信は許可する (戻りのパケットのため)
-    iptables -I FORWARD 1 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
-
-    local port_ip_port=$1
-    local local_port=$(echo "$port_ip_port" | cut -d':' -f1)
-    local target_ip=$(echo "$port_ip_port" | cut -d':' -f2)
-    local target_port=$(echo "$port_ip_port" | cut -d':' -f3)
-
-    # IPアドレス検証
-    if ! [[ "$target_ip" =~ ^([0-9]{1,3}\.){3}[0-9]{1,3}$ ]]; then
-        error "Invalid IP address: $target_ip"
-    fi
-
-    # ポート番号検証
-    if ! [[ "$local_port" =~ ^[0-9]+$ ]] || ! [[ "$target_port" =~ ^[0-9]+$ ]]; then
-        error "Invalid port number"
-    fi
-    if (( local_port < 1 || local_port > 65535 || target_port < 1 || target_port > 65535 )); then
-        error "Port number out of range (1-65535)"
-    fi
-
-    # iptablesでルールを追加
-    # 外部からのパケットを対象
-    iptables -t nat -A PREROUTING -p "$PROTO" -m "$PROTO" --dport "$local_port" -j DNAT --to-destination "$target_ip:$target_port"
-    # ローカルで生成されたパケットを対象
-    iptables -t nat -A OUTPUT -p "$PROTO" -m "$PROTO" --dport "$local_port" -j DNAT --to-destination "$target_ip:$target_port"
-
-    if [[ $container_env -eq 0 ]]; then
-        # コンテナ環境ではMASQUERADEを使用
-        iptables -t nat -A POSTROUTING -p "$PROTO" -m "$PROTO" -d "$target_ip" --dport "$target_port" -j MASQUERADE
-    fi
-
-    # 転送されるパケットを許可する
-    iptables -A FORWARD -p "$PROTO" -m "$PROTO" -d "$target_ip" --dport "$target_port" -j ACCEPT
-
-    if ! $QUIET; then
-        echo "Rule added: port $local_port -> $target_ip:$target_port (proto=$PROTO)"
-    fi
-}
-
-# ルールを編集して復元
-edit_rules() {
-    local temp_file
-    temp_file=$(mktemp -t iptables.rules.XXXXXX) || error "Failed to create temporary file"
-    chmod 0600 "$temp_file"
-    trap 'rm -f "$temp_file"' EXIT
-
-    # 現在のルールを一時ファイルに保存
-    iptables-save > "$temp_file"
-
-    # エディタを決定
-    local editor=${EDITOR:-nano}
-    if ! command -v "$editor" > /dev/null; then
-        editor=vi
-    fi
-
-    # nanoで編集
-    if ! "$editor" "$temp_file"; then
-        error "Editor closed without saving or an error occurred."
-    fi
-
-    # 編集後の内容でリストア
-    if iptables-restore < "$temp_file"; then
-        echo "iptables rules restored successfully from your edits."
-        echo "--- Displaying new rules ---"
-        iptables-save
-    else
-        error "Failed to restore iptables rules. Please check for syntax errors in your edits."
-    fi
-}
-
-# 疎通確認用関数
-test_rule() {
-    local arg=$1
-    local local_port target_ip target_port
-
-    if [[ "$arg" =~ ^[0-9]+$ ]]; then
-        # rule number → ルール行を取得
-        local line=$(iptables -t nat -L PREROUTING -n --line-numbers | grep "^$arg ")
-        if [[ -z "$line" ]]; then
-            error "No rule found with number: $arg"
-        fi
-        local_port=$(echo "$line" | awk '{print $8}'|cut -d ':' -f2)
-        target_ip=$(echo "$line" | awk -F: '{print $1}')
-        target_port=$(echo "$line" | awk -F: '{print $2}')
-    else
-        # 文字列形式
-        local_port=$(echo "$arg" | cut -d':' -f1)
-        target_ip=$(echo "$arg" | cut -d':' -f2)
-        target_port=$(echo "$arg" | cut -d':' -f3)
-    fi
-
-    echo "Testing connectivity to local port \"$(tput setaf 3)nc -z -w 5 127.0.0.1 $local_port$(tput sgr0)\""
-    if nc -z -w 5 127.0.0.1 "$local_port" 2>/dev/null; then
-        echo "$(tput setaf 6)Connection successful.$(tput sgr0)"
-    else
-        echo "$(tput setaf 1)Connection failed.$(tput sgr0)"
-    fi
-}
-
-# メイン処理
-main() {
-    # オプション解析
-    while [[ $# -gt 0 ]]; do
-        case "$1" in
-            -h|--help)
-                show_help
-                exit 0
-                ;;
-            -L|-l)
-                list_rules
-                exit 0
-                ;;
-            -v)
-                iptables-save | grep -v '^#' | less -R
-                exit 0
-                ;;
-            -e)
-                edit_rules
-                exit 0
-                ;;
-            -f)
-                if sysctl -w net.ipv4.ip_forward=1 > /dev/null && \
-                   sysctl -w net.ipv4.conf.all.route_localnet=1 > /dev/null && \
-                   sysctl -w net.ipv4.conf.default.route_localnet=1 > /dev/null; then
-                    echo "IP forwarding and localnet routing enabled."
-                else
-                    error "Failed to enable kernel parameters."
-                fi
-                exit 0
-                ;;
-            --version)
-                show_version
-                exit 0
-                ;;
-            -d)
-                if [[ $# -lt 2 ]]; then
-                    error "Missing rule number for -d option"
-                fi
-                delete_rule "$2"
-                exit 0
-                ;;
-            -t)
-                if [[ $# -lt 2 ]]; then
-                    error "Missing argument for -t option"
-                fi
-                test_rule "$2"
-                exit 0
-                ;;
-            -q)
-                QUIET=true
-                shift
-                ;;
-            -p)
-                if [[ $# -lt 2 ]]; then
-                    error "Missing protocol after -p"
-                fi
-                if [[ "$2" != "tcp" && "$2" != "udp" ]]; then
-                    error "Unsupported protocol: $2"
-                fi
-                PROTO="$2"
-                shift 2
-                ;;
-            -*)
-                error "Unknown option: $1"
-                ;;
-            *)
-                break
-                ;;
-        esac
-    done
-
-    # 引数が残っていれば、ルール追加処理
-    if [[ $# -eq 0 ]]; then
-        show_help
-        exit 1
-    fi
-
-    local arg=$1
-
-    # ルール追加処理
-    if [[ "$arg" =~ ^[0-9]+:[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+:[0-9]+$ ]]; then
-        add_rule "$arg"
-    else
-        error "Invalid format. Expected: PORT:IP:PORT or -L or -d RULE_NUMBER"
-    fi
-}
-
-# 実行
-main "$@"