WAN 先不要接

192.168.1.1 登入之後先更改密碼

Configuartion
WAN
WAN Connections
Edit

Advanced Mode 要 on

IPv4 改選 PPPoE

會出現警告訊息
Security warning
×
The setting is not secure, Do you want to continue?
Enabling this feature may expose your device to security risks.
This functionality (e.g., Telnet) is considered unsecured because it does not encrypt data during transmission, which could allow attackers to intercept sensitive information.
This feature is disabled by default to comply with modern security standards (e.g., EN18031). It is retained only for backward compatibility with legacy systems.
要同意

填好相關資訊

Error
'WAN Connection Detection Mode' is empty.
那是因為 WAN Connection Detection 沒有選擇
PPP
Ping

通常是選 PPP Detect
以上
就可以把 WAN 的線接上