Till Dörges <doerges@xxxxxxxxxxxx> writes: > Apart from the security requirements the server uses DFS and nested name spaces. The nested namespace might be problematic. DFS is tricky. > So before digging any further, I'm wondering whether this should generally work with > options "seal,vers=3.1.1", what to make of the ciphers requirement. I think by default the client will only show support for up to 3.0 unless you ask it to. So apart from the version, encryption and ciphers should be auto-negotiated during the connection establishement: the client sends its feature support, the server replies with its requirement. If the requirements cannot be met the client will fail. I believe you should only have to put vers=3.1.1. By putting seal you are asking the client to make encryption a requirement instead of letting the server decide. If you are having issues connecting please refer to the wiki on reporting cifs.ko bugs for instructions on how to debug things further: https://wiki.samba.org/index.php/Bug_Reporting#cifs.ko Cheers, -- Aurélien Aptel / SUSE Labs Samba Team GPG: 1839 CB5F 9F5B FB9B AA97 8C99 03C8 A49B 521B D5D3 SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg, DE GF: Felix Imendörffer, Mary Higgins, Sri Rasiah HRB 247165 (AG München)