I’m configuring a PHP 5.2.17 application, running on a CentOS 6.8 docker container, and it needs to connect to a SMB server. Unfortunately, i’m not able to mount that SMB server.

I can connect to it using smbclient just fine, after putting client lanman auth = yes and client ntlmv2 auth = no in /etc/samba/smb.conf, like this:
smbclient //<ip>//<folder> -U <user>

However, trying to mount it gives different errors:

Command ran:

mount -t cifs //<ip>/<folder> /mnt/<folder> -o username=<user>,password=<password>

Output:

mount error(112): Host is down

Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Dmesg output:

[15555.429425] CIFS: Attempting to mount //<ip>/<folder>

[15555.446259] CIFS: VFS: cifs_mount failed w/return code = -112

Specifying the version, gives another error however:

Command ran:

mount -t cifs //<ip>/<folder> /mnt/<folder> -o username=<user>,password=<password>,vers=1.0

Output:

mount error(22): Invalid argument

Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

Dmesg output:

[15886.905425] vers=1.0 (cifs) mount not permitted when legacy dialects disabled

[15886.905425] 

[15886.905429] CIFS: VFS: vers=1.0 (cifs) mount not permitted when legacy dialects disabled

I’ve tried connecting to the SMB server on my home lab, and it just works. Also, i’ve tried running the commands with mount.cifs, with no luck.