How to fix common login issues

Audience: Faculty, Postdocs, Researchers, Staff and Students

This KB Article References: High Performance Computing
This Information is Intended for: Faculty, Postdocs, Researchers, Staff, Students
Last Updated: March 20, 2018

Sometimes SeaWulf users receive the following error message when attempting to login:

ssh_exchange_identification: read: Connection reset by peer

This typically indicates that the IP address the user is attempting to log in from has been blocked due to too many unsuccessful login attempts.

To rectify this situation, users should submit a ticket and ask to have their IP address unblocked.  When submitting the ticket it is helpful if you provide your public IP address.  There are many websites that will provide this info (e.g., here).  Likewise, this info can be determined at the command line by typing "ipconfig" (Windows users), "ifconfig" (Mac users), "ifconfig" or "curl ifconfig.me" (Linux users).  

The most common cause of unsuccessful logins is password mistyping.  To make things easier, users may wish to bypass the need for password entry to log into to SeaWulf by creating an RSA key.  For more info, please see this FAQ item on how to set up an RSA key for passwordless SSH.

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