diff --git a/README.md b/README.md
index 8a7ceb8..a8711cc 100644
--- a/README.md
+++ b/README.md
@@ -69,6 +69,7 @@ Jump Box  RustDesk    SQL Server  SQL Server  反代 / Headscale
 | `80` | TCP | `192.168.42.124:80` | Nginx Proxy Manager | — |
 | `443` | TCP | `192.168.42.124:443` | Nginx Proxy Manager | — |
 | `3478` | UDP | `192.168.42.126:3478` | Headscale DERP STUN | — |
+| `3479` | UDP | `192.168.42.127:3479` | NetBird STUN | — |
 | `7835` | TCP | `192.168.42.100:7835` | Bore Tunnel | ✅ |
 | `8080` | TCP | `192.168.42.126:8080` | Headscale HTTP API | — |
 | `9090` | TCP | `192.168.42.126:9090` | Headscale Metrics | — |
@@ -81,6 +82,8 @@ Jump Box  RustDesk    SQL Server  SQL Server  反代 / Headscale
 | `31433` | TCP | `192.168.42.117:1433` | SQL Server (.117) | — |
 | `51820` | UDP | router wg0 | WireGuard | — |
 
+> **STUN port 說明**：標準 STUN port 為 `3478/udp`，已由 Headscale DERP（`.126`）佔用。NetBird（`.127`）後上線，為避免衝突改用 `3479/udp`（`stunPorts: [3479]`，對應 `/opt/netbird/config.yaml`）。Client 設定的 STUN URI 需指向 `stun:<wan_ip>:3479`。
+
 ---
 
 ### LAN 裝置
@@ -94,6 +97,7 @@ Jump Box  RustDesk    SQL Server  SQL Server  反代 / Headscale
 | `192.168.42.117` | SQL Server B |
 | `192.168.42.124` | Nginx Proxy Manager + Gitea（:31337）|
 | `192.168.42.126` | Headscale |
+| `192.168.42.127` | NetBird（Management + Signal + STUN/TURN）|
 | `192.168.42.220` | TimmydeMBP |
 
 ---