PuTTY SSH conection problem

Hvarcz
Hvarcz Posts: 1  Freshman Member
in Security

HI,

when I triy connect via Putty SSH to USG flex 50, after insert username it it wrote :

No supported authentication method avaible (server sent:)

Can someone help me?

Accepted Solution

  • Zyxel_Kay
    Zyxel_Kay Posts: 1,280  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - WLAN Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security
    Answer ✓

    Hi @Hvarcz

    To access the CLI via your SSH client program, please follow these steps:

    1. Enable SSH:
      • Go to the Web Configurator, navigate to System > SSH, and ensure SSH is enabled.
    2. Allow SSH Protocol:
      • Verify that the SSH protocol is permitted from your computer’s zone to the Zyxel device. By default, you can add SSH to the service group Default_Allow_WAN_To_ZyWALL under Object > Service > Service Group. This group defines which services are allowed in the default WAN_to_Device security policy.

    Note: The default login username is admin and the password is 1234. Both are case-sensitive.

    For further details, you can refer to the USG FLEX 50 CLI Reference guide.

    If you have already applied these settings but still cannot access the device, please provide a screenshot of the error message you receive.

    Kay

All Replies

  • Zyxel_Kay
    Zyxel_Kay Posts: 1,280  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - WLAN Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security
    Answer ✓

    Hi @Hvarcz

    To access the CLI via your SSH client program, please follow these steps:

    1. Enable SSH:
      • Go to the Web Configurator, navigate to System > SSH, and ensure SSH is enabled.
    2. Allow SSH Protocol:
      • Verify that the SSH protocol is permitted from your computer’s zone to the Zyxel device. By default, you can add SSH to the service group Default_Allow_WAN_To_ZyWALL under Object > Service > Service Group. This group defines which services are allowed in the default WAN_to_Device security policy.

    Note: The default login username is admin and the password is 1234. Both are case-sensitive.

    For further details, you can refer to the USG FLEX 50 CLI Reference guide.

    If you have already applied these settings but still cannot access the device, please provide a screenshot of the error message you receive.

    Kay

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