---
title: "What do the colours on Network & NAT mean?"
url: "https://forum.qnap.net.pl/threads/what-do-the-colours-on-network-nat-mean.46317/"
thread_id: 46317
date: "2026-11-11"
category: "FAQ"
section: "Knowledge base"
source: "Forum QNAP Polska"
site: "https://forum.qnap.net.pl"
language: "pl"
ai_policy: "https://forum.qnap.net.pl/ai-policy.md"
license: "https://forum.qnap.net.pl/ai-policy.md"
---

# What do the colours on Network & NAT mean?

> Source: <https://forum.qnap.net.pl/threads/what-do-the-colours-on-network-nat-mean.46317/> · FAQ · Forum QNAP Polska · 2026-11-11

**Symptoms**

- **Network & NAT** shows green, orange, red and grey marks, and you do not know which of them need action.

**Cause**
The page has three cards, and each one marks its own checks. Green means that a check passed. Orange means you should look at something. Red means that a check failed. Grey usually means that a check got no answer or did not run. In the **Mapped as** column, read the words, not the colour. These are the colours of the default theme. Other themes use their own shades.

**Resolution**

1. Read **Route to the internet**. The box at the top is green when nothing is in the way, for example with **Peers can reach this NAS**. An orange box, such as **Possible multiple routers**, names something to check: a second router, or a port that is closed. A red box, **Another NAT likely before your router (IPv4)**, means that a forward on your router alone may not help. The box lists what to do.
![](https://forum.qnap.net.pl/attachments/75951/)
2. Read **BitTorrent port**. The line at the top is green for **IPv4 TCP port … open**, red for **IPv4 TCP port … not reachable**, and orange for **IPv4 TCP port … unverified** when no checker on the internet answered. Under it, each of the four steps has a green tick (passed), a red cross (failed) or a grey question mark (no answer).
![](https://forum.qnap.net.pl/attachments/75952/)
3. Read **Network services**. Under **Mapped as**, **same port** means that the router mapped the port under the same number, and **Not mapped** means that it mapped nothing. In the default theme, both are grey. Two numbers in orange (… → …) mean that the router gave another outside port; use the same port on both sides. Under **From the internet**, a TCP row shows green **open**, red **not reachable** or grey **unverified**. UDP rows show **not tested**.
![](https://forum.qnap.net.pl/attachments/75953/)

**Notice & Advise**
The last step, **External IPv4 TCP check**, tells you whether peers on the internet can reach the port. A red **Router mapping list** alone does not indicate a fault, because a port forwarded manually never shows in that list. A grey **Router loopback** proves nothing either, because many routers refuse loopback connections.

Ref. links:
[Rtorrent 16 guide: Ports](https://pub.qnaputilities.com/rtorrent16/demo/guides/?g=ports)

---

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