I don't think this can be done easily The way pam works is the program (sshd in this case) starts the pam context with a specific name. Looking at sshd source it seems this is __progname for sshd which should be the basename of the executable. There does not seem to be a separate authentication stack for sftp part specifically. So it does not matter if you create a pam.d/sftp configuration as sshd is not programmed to look for it.
sshd can however be configured to limit ssh access and allow sftp based on a users group. So this could be achieved by having the sftp only users in a specific user group. Kontakt Kevin Vasko via FreeIPA-users (<[email protected]>) kirjutas kuupäeval T, 16. mai 2023 kell 19:45: > Try to make this simple. > > Have a HBAC, have the "Who" set to a user, have the "Accessing" set to a > server. > > Have the "Via Service" set to "sshd". The user can ssh into the server no > issue. > > I want to limit this user to only being able to sftp into this server (no > direct ssh). > > If I swap the "Via Service" from the sshd service to sftp that user is now > denied. They cannot access the server via sftp or ssh. I would expect it to > deny ssh access but allow sftp. > > I did copy "cp /etc/pam.d/sshd /etc/pam.d/sftp" as I saw it mentioned here > https://freeipa-users.redhat.narkive.com/tFQFZmNu/hbac-service-allowed-despite-not-listed > but that didn't seem to work. > > Can you point me to the instructions on how to make the HBAC work with a > particular service (e.g. sftp)? > _______________________________________________ > FreeIPA-users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > Fedora Code of Conduct: > https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: > https://lists.fedorahosted.org/archives/list/[email protected] > Do not reply to spam, report it: > https://pagure.io/fedora-infrastructure/new_issue >
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