macOS units were experiencing performance issues both authenticating and browsing Hitachi HNAS appliances navigating through any DFS namespace. This lead to the following issues:
- Long delays mounting shares, browsing folders, and opening files (15s for auth dialog to appear, 15s to connect).
- Slow file searches
- File corruption
- Disappearing files
- Crashing applications
- Permissions problems
- Locked files and file naming issues
- Failed downloads when using Google Chrome to save gmail attachments directly to server
- Microsoft Office intermittently fails to save documents opened from the server
This was solved by disabling the SMB packet signing.
[levaufr1@mbp ~]$ sudo vi /etc/nsmb.conf # Managed by JAMF [global] #smb_neg=smb1_only signing_required=no
On JAMF JSS, deploy the following script:
#!/bin/bash # Overwrite /etc/nsmb.conf printf "# Managed by JAMF\n\n[global]\n#smb_neg=smb1_only\nsigning_required=no\n" > /etc/nsmb.conf if [[ -f /etc/nsmb.conf ]]; then echo "OK: /etc/nsmb.conf exists" exit 0 else echo "ERROR: /etc/nsmb.conf doesn't exist!!" exit 1 fi