[Solved] can't connect to CIFS after debian upgrade

[PC_Hater]

My Nas4Free box is run headless and used as a music server for my Sonos hifi system so I rarely need to connect to it from any of my computers.
I upgraded debian unstable (sid) on my laptop and then discovered I was no longer able to connect to the server.
The problem was mounting the CIFS drive to my debian laptop. The reminder I had written to myself no longer worked.
I found many postings all over the place, all with slightly different variations of how to mount a CIFS drive. Many of those suggestions were either wrong or outdated.
The solution was that I had to include the security setup on the CIFS, otherwise I got Permission Denied. I found the solution at kernel.org - which is an indication of how deep I had to dig to find the right answer!

Partly to help others, and partly as an easy to find reminder to me, here is how it must be done when using debian unstable in May 2013.
1) create your mount point. I use /mnt/nas
2) sudo mount -t cifs //AUDIONAS1/SharedAudio /mnt/nas --verbose -o guest,sec=ntlm

AUDIONAS1 is the server name
SharedAudio is the directory with all the music files.
--verbose is a bit of a misnomer and doesn't tell you as much as you think it will
guest means you get in without being asked for a password
sec=ntlm tells 'something' what CIFS protocol is being used by Nas4Free. Nas4Free shows it as NT1

I am now fairly certain I could set the Max Protocol for CIFS to SMB2 and by changing the sec= part of mount it would still work.

[TeoLinuX]

Can I ask more about how you setup a connection to your Sonos?
Is it directly connected to the NAS (through what service?) or do you have to pass through the laptop?
Another question: in case you only use a linux laptop, did you consider using NFS sharing instead of CIFS/smb? If no, why, did you encounter any config problem?

Thank you