Samba

Mount:

mount -t cifs //<ip or host>/<share> <mount point>/ -o username=<username>,password=<password>

Or:

mount.cifs //<ip or host>/<share> <mount point>/ -o username=<username>,password=<password>

Trouble with old versions

Setting the version might help:

mount -t cifs //<ip or host>/<share> <mount point>/ -o username=<username>,password=<password>,vers=<1.0, 2.0, 3.0>

Usually version 1.0 is not allowed, since it is super insecure! (Source)