We are using scaleft and Okta to access our VMs. We recently migrated to Ubuntu 24.04 some of our VMs. And we are experiencing issues with Okta and scaleft. Indeed Okta doesn’t seem to be compatible with the most recent version of openSSH shipped by default on Ubuntu 24.04 (openssh v9.6). The reason is that the keys used by Scaleft proxy command are too small, it uses 1024bit keys where the new default value for SSHD is 2048bits.
I could fix it by using the config RequiredRSASize 1024as mentioned in the following support page : Okta Help Center (Lightning) but it is not recommended to do so since 1024bit keys are not secured anymore.
Is there anyway to configure scaleft to use bigger keys ? And if not what is the justification for that ?