Error reading SSH protocol banner

[Andria Trigeorgi]

Hello, 

I am encountering an issue while trying to access nodes on the Emulab testbed. When attempting to connect via SSH, I receive the following error message:

"Error reading SSH protocol banner"

experiment: https://www.emulab.net/portal/status.php?uuid=45026ecc-ede4-11ef-af1a-e4434b2381fc

Thank in advance for your help, 

Andria

[Mike Hibler]

What node are you ssh'ing to? From where? Using the browser client or
putty or ssh?

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[Andria Trigeorgi]

I have tested SSH access from terminal and from browser client  to pc529.emulab.net from two different networks:

• From my office network – I encounter the error:

• Error reading SSH protocol banner

• From my home network – SSH access works without issues.

[Leigh Stoller]

> On Feb 28, 2025, at 11:26 AM, Andria Trigeorgi <an.tri...@gmail.com> wrote:
>
> I have tested SSH access from terminal and from browser client to pc529.emulab.net from two different networks:
> • From my office network – I encounter the error:
> Error reading SSH protocol banner
> • From my home network – SSH access works without issues.

Hi. Can you tell us what your local IP is? It is possible you have
landed on our firewall block list.

Leigh

[Andria Trigeorgi]

I am currently not at my office, so I cannot check my local IP. However, when I encountered the issue, I was connected to the office network with SSID ALGOLYSIS.