Hydra security hardening

Due to the recent wave of cyberattacks on HPC centers throughout Europe, the SISC HPC team will take security hardening measures on Hydra, in consultation with the VSC.

VSC users

ULB users

  • On Friday 22nd of May, all SSH keys stored in your NetID home directory will be deleted. Access to hydra.ulb.ac.be will remain possible with your NetID and password.

  • After 22nd of May, we invite all NetID users to generate a new pair of SSH keys.

As a general reminder, the use of SSH keys to connect to Linux-based systems, like Hydra, is highly recommended. However, to ensure maximum security, please encode a passphrase with your keys and only upload to Hydra the public key.

Users with a CECI account should not upload their CECI public SSH key to Hydra; CECI keys should be strictly reserved for access to the CECI clusters. Direct access to the vega.ulb.ac.be cluster is possible via the ULB VPN.