smbnetfs-setup.md

SMBNetFS

Install and setup

sudo apt-get install smbnetfs
mkdir ~/.smb
cp /etc/smbnetfs/smbnetfs.conf ~/.smb
cp /etc/samba/smb.conf ~/.smb
tee ~/.smb/smbnetfs.auth <<EOF
auth HOSTNAME USERNAME PASSWORD
EOF
chmod 600 ~/.smb/smbnetfs.auth

Usage

Mount

mkdir MOUNTPOINT
smbnetfs MOUNTPOINT
ls MOUNTPOINT/WORKGROUP
ls MOUNTPOINT/HOSTNAME
ls MOUNTPOINT/USERNAME:PASSWORD@HOSTNAME/SHAREPOINT

Unmount

fusermount -u MOUNTPOINT

DNS setup

sudo tee -a /etc/resolvconf/resolv.conf.d/base <<EOF
search mydomain.com
nameserver 192.168.0.1
EOF
sudo resolveconf -u

I got it to work using Kerberos authentication:

1. apt-get install krb5-user

2. Configure /etc/krb5.conf:

    [libdefaults]
    default_realm = YOUR.AD.DOMAIN.IN.UPPERCASE
    default_keytab_name = /etc/krb5.keytab
    default_tkt_enctypes = rc4-hmac des-cbc-crc des-cbc-md5
    default_tgs_enctypes = rc4-hmac des-cbc-crc des-cbc-md5
   
    [domain_realm]
    .your.ad.domain.in.lowercase = YOUR.AD.DOMAIN.IN.UPPERCASE
    your.ad.domain.in.lowercase = YOUR.AD.DOMAIN.IN.UPPERCASE
   

3. Get a Kerberos ticket using kinit -r28d [email protected]

4. Validate that it works using smbclient -k -U [email protected] -L //hostname.your.ad.domain.in.whatevercase

5. Run smbnetfs ~/mountpoint

6. Access Windows stuff using ls ~/mountpoint/hostname.your.ad.domain.in.whatevercase/sharename/folder/file.txt

Step 3 fetches a renewable Kerberos Ticket, which I combined with an hourly cronjob to renew it:

0 * * * kinit -r28d -R [email protected]

The ~/mountpoint dir was empty, but accessing the files worked regardless. Adding a ~/.smb/smbnetfs.host file made my target host appear in the directory so that I can use tab completion for convenience, but file access worked without it.