Add IP allowlist and diagnostic PowerShell scripts

Added allowed_ips_updated.txt containing updated allowed IPs and configuration examples. Introduced check_ip.ps1 and check_ip_fixed.ps1 for checking current IPs against the allowlist and performing connectivity tests, with the fixed version improving external IP detection. Added diagnose_127.ps1 to help diagnose and resolve issues related to services binding to 127.0.0.1.

diagnose_127.ps1

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+# 診斷 127.0.0.1 問題的腳本
+# 檢查應用程式綁定和網路配置
+
+Write-Host "=== 127.0.0.1 問題診斷工具 ===" -ForegroundColor Green
+Write-Host ""
+
+# 1. 檢查當前運行的服務
+Write-Host "1. 檢查當前運行的服務:" -ForegroundColor Yellow
+$services = Get-Service | Where-Object {$_.Status -eq "Running"} | Select-Object Name, DisplayName
+Write-Host "   運行中的服務數量: $($services.Count)" -ForegroundColor Cyan
+
+# 2. 檢查監聽的端口
+Write-Host ""
+Write-Host "2. 檢查監聽的端口:" -ForegroundColor Yellow
+$listening = netstat -an | Select-String "LISTENING"
+if ($listening) {
+    Write-Host "   發現監聽端口:" -ForegroundColor Cyan
+    $listening | ForEach-Object {
+        Write-Host "   $_" -ForegroundColor White
+    }
+} else {
+    Write-Host "   沒有發現監聽端口" -ForegroundColor Red
+}
+
+# 3. 檢查常見的Web服務
+Write-Host ""
+Write-Host "3. 檢查常見的Web服務:" -ForegroundColor Yellow
+
+# 檢查 IIS
+$iis = Get-Service -Name "W3SVC" -ErrorAction SilentlyContinue
+if ($iis) {
+    Write-Host "   IIS 狀態: $($iis.Status)" -ForegroundColor Cyan
+} else {
+    Write-Host "   IIS: 未安裝或未運行" -ForegroundColor Gray
+}
+
+# 檢查 Apache
+$apache = Get-Process -Name "httpd" -ErrorAction SilentlyContinue
+if ($apache) {
+    Write-Host "   Apache: 正在運行" -ForegroundColor Cyan
+} else {
+    Write-Host "   Apache: 未運行" -ForegroundColor Gray
+}
+
+# 檢查 Node.js
+$node = Get-Process -Name "node" -ErrorAction SilentlyContinue
+if ($node) {
+    Write-Host "   Node.js: 正在運行 (PID: $($node.Id))" -ForegroundColor Cyan
+} else {
+    Write-Host "   Node.js: 未運行" -ForegroundColor Gray
+}
+
+# 檢查 Python
+$python = Get-Process -Name "python*" -ErrorAction SilentlyContinue
+if ($python) {
+    Write-Host "   Python: 正在運行 (PID: $($python.Id))" -ForegroundColor Cyan
+} else {
+    Write-Host "   Python: 未運行" -ForegroundColor Gray
+}
+
+# 4. 檢查網路配置
+Write-Host ""
+Write-Host "4. 網路配置檢查:" -ForegroundColor Yellow
+$interfaces = Get-NetIPAddress | Where-Object {$_.AddressFamily -eq "IPv4" -and $_.IPAddress -notlike "127.*"} | Select-Object IPAddress, InterfaceAlias
+Write-Host "   可用網路介面:" -ForegroundColor Cyan
+foreach ($if in $interfaces) {
+    Write-Host "   $($if.IPAddress) - $($if.InterfaceAlias)" -ForegroundColor White
+}
+
+# 5. 檢查防火牆設定
+Write-Host ""
+Write-Host "5. 防火牆檢查:" -ForegroundColor Yellow
+$firewall = Get-NetFirewallProfile | Select-Object Name, Enabled
+foreach ($profile in $firewall) {
+    $status = if ($profile.Enabled) { "啟用" } else { "停用" }
+    Write-Host "   $($profile.Name): $status" -ForegroundColor Cyan
+}
+
+# 6. 常見解決方案
+Write-Host ""
+Write-Host "=== 常見解決方案 ===" -ForegroundColor Green
+
+Write-Host ""
+Write-Host "如果您的應用程式顯示 127.0.0.1，請嘗試以下解決方案:" -ForegroundColor Yellow
+
+Write-Host ""
+Write-Host "1. 檢查應用程式配置文件:" -ForegroundColor Cyan
+Write-Host "   - 確保綁定到 0.0.0.0 而不是 127.0.0.1" -ForegroundColor White
+Write-Host "   - 檢查 host 設定" -ForegroundColor White
+
+Write-Host ""
+Write-Host "2. 常見的配置修改:" -ForegroundColor Cyan
+Write-Host "   Node.js: app.listen(3000, '0.0.0.0')" -ForegroundColor White
+Write-Host "   Python Flask: app.run(host='0.0.0.0')" -ForegroundColor White
+Write-Host "   Apache: Listen 0.0.0.0:80" -ForegroundColor White
+Write-Host "   Nginx: listen 80;" -ForegroundColor White
+
+Write-Host ""
+Write-Host "3. 檢查應用程式是否正在運行:" -ForegroundColor Cyan
+Write-Host "   - 確認應用程式進程存在" -ForegroundColor White
+Write-Host "   - 檢查錯誤日誌" -ForegroundColor White
+Write-Host "   - 確認端口沒有被其他程式佔用" -ForegroundColor White
+
+Write-Host ""
+Write-Host "4. 網路測試:" -ForegroundColor Cyan
+Write-Host "   - 測試本地連接: telnet 127.0.0.1 [port]" -ForegroundColor White
+Write-Host "   - 測試外部連接: telnet [your-ip] [port]" -ForegroundColor White
+
+Write-Host ""
+Write-Host "請告訴我您使用的是哪種應用程式，我可以提供更具體的解決方案。" -ForegroundColor Green