Starting on January 1st, 2022, direct Secure Shell (SSH) access to AHPCC login nodes will only be allowed from:
hpc-portal.uark.edu
, is available for any user holding an active AHPCC account. This service, upon successful login, registers the source IP address of user's client machine and adds that IP to the list of allowed IP's allowed to pass network traffic to the AHPCC login nodes. To use the service ssh into port 2022 of hpc-portal.uark.edu.[pawel@frontdesk ~]$ ssh testuser@hpc-portal.uark.edu -p 2022 Password: Last login: Tue Dec 7 16:58:10 2021 from 75.205.5.185 Arkansas High Performance Computing Center off-campus access portal =========================================================================== https://hpc-portal.uark.edu <- Open Ondemand Web Portal ssh hpc-portal.uark.edu <- Standard AHPCC login Access allowed from 75.205.5.185 until Wed Dec 8 06:02:43 CST 2021 =========================================================================== Connection to hpc-portal.uark.edu closed. [pawel@frontdesk ~]$
At this point the source IP address 75.205.5.185
is registered and will remain in the allow list for the next 12 hours. An SSH session directly to hpc-portal.uark.edu will forward the connection to a Pinnacle login node.
[pawel@frontdesk ~]$ ssh testuser@hpc-portal.uark.edu Password: Last login: Tue Dec 7 16:58:20 2021 from jumpbox pinnacle-l7:testuser:~$
The other popular method for accessing AHPCC resources is the Open Ondemand portal. On-campus and UAF VPN users can access this service via the URL:
https://pinnacle-portal.uark.edu
https://hpc-portal.uark.edu
forwards the connection to the Open Ondemand portal.