# 4.5 Command-line

Secure Shell (SSH) is a cryptographic network protocol to access the router’s command-line interface. The EZR24 router offers various ways to access the command-line interface.

## **Web Terminal** <a href="#web-terminal" id="web-terminal"></a>

After accessing the router, go to `System` > `Terminal`. Input the default username `root` and the router password. You will then receive the welcome message on the web terminal interface.

*\* The web terminal is unavailable under the Traversal Cloud mode.*&#x20;

```
OutdoorRouter login: root
Password: <invisible>


BusyBox v1.28.4 () built-in shell (ash)

╔═╗╦ ╦╔╦╗╔╦╗╔═╗╔═╗╦═╗╦═╗╔═╗╦ ╦╔╦╗╔═╗╦═╗
║ ║║ ║ ║  ║║║ ║║ ║╠╦╝╠╦╝║ ║║ ║ ║ ║╣ ╠╦╝
╚═╝╚═╝ ╩ ═╩╝╚═╝╚═╝╩╚═╩╚═╚═╝╚═╝ ╩ ╚═╝╩╚═
---------------------------------------
☼ ☼ ☼       OUTDOOR ROUTER        ❅ ❅ ❅
---------------------------------------

root@CellularRouter:~#
```

## SSH Software

### **i. Linux & Mac**

For Linux and Mac computers, the most common tool is the system "Terminal" tool.

* Open a new `Terminal` window, type `ssh root@192.168.20.1` , and press *Enter*.
* If this is your first time logging in, you might be asked to clarify whether you want to log in. In that case, type yes and press `Enter`.
* Then type in the router’s admin password and press `Enter`  to finish the login process.

{% hint style="info" %}
If the router has changed configurations, you might need to clear the stored SSH key information with this command. `ssh-keygen -R 192.168.20.1`.
{% endhint %}

![](https://2031239798-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LvFmeL2Pv0EF2-7nON9%2F-LxZzYuGbAiN0fLsLmCp%2F-Lx_-2oH8YOb0yjNhZI7%2Fimage.png?alt=media\&token=427d4a75-5d46-41fe-b828-95e92e5c51f8)

### **ii. Windows**

For Windows computers, the most common SSH tool is **PuTTY**.&#x20;

* Launch PuTTY and select the SSH option under the `Connection type` field.
* Type in the router’s LAN IP address `192.168.20.1` into the `Host Name` field.
* Type in the SSH port `22` into the `Port`” field.
* Click `Open` button.
* In the next window, type in the login name `root`  and press `Enter`.
* Type in the router’s admin password and press `Enter` again.
* You should be greeted with a message.