Samba

Samba - allows Linux to transfer files with Windows clients

• http://www.krizna.com/ubuntu/setup-file-server-ubuntu-14-04-samba/ (Anonymous share and Secured share via username/password)
• Samba can use the system user name but it doesn't use the system account password. That is, we need to set up a Samba password for our user account
• It is fine to use an existing directory to share
• How to Set Up a Network Shared Folder on Ubuntu With Samba 2021
• https://www.howtoforge.com/tutorial/samba-server-ubuntu-16-04/

sudo apt-get install -y samba samba-common python-glade2 system-config-samba
sudo cp -pf /etc/samba/smb.conf /etc/samba/smb.conf.bak
sudo sh -c 'cat /dev/null  > /etc/samba/smb.conf'
sudo nano /etc/samba/smb.conf
sudo service smbd restart
testparm
# password protected
sudo addgroup smbgrp
sudo useradd till -G smbgrp
sudo smbpasswd -a SOMEEXISTEDUSER
sudo mkdir -p /samba/secured
cd /samba
sudo chmod -R 0770 secured
sudo chown root:smbgrp secured
sudo nano /etc/samba/smb.conf
sudo service smbd restart 
testparm

sudo netstat -pant | grep smbd   # mine shows 139 & 445

• I have trouble to connect to the samba server though connecting it itself from the samba server works fine.

$ smbclient -L //192.168.1.XX/sambashare -U SOMEEXISTEDUSER
WARNING: The "syslog" option is deprecated
Connection to 192.168.1.XX failed (Error NT_STATUS_IO_TIMEOUT)

# From server itself
$ smbclient -L //localhost 

# Solution: ufw
# https://askubuntu.com/a/184806
sudo ufw allow Samba

# From the client 
$ smbclient -L //192.168.1.XX/sambashare -U YYY
# No error. Return to the local prompt again.
# Now we can use Ubuntu's Files app to connect to the server
# smb://192.168.1.XX/

• What Ports Need To Be Open For Samba To Communicate With Other Windows/Linux Systems? Ans: 139 & 445.
  • What is an SMB Port + Ports 445 and 139 Explained
• Share 'between' ubuntu and Windows
• Start and stop the samba daemons

$ ps -ef | grep smbd    # see if the Samba daemon (smbd)
$ ps -ef | grep nmbd    # see if the NetBIOS name server daemon (nmbd) is running

$ sudo service smbd stop  # does not stop nmbd 
$ sudo service nmbd stop

$ sudo service smbd start
$ sudo service nmbd start

• smb.conf — The configuration file for the Samba suite

sudo apt-get install samba samba-common
sudo apt-get install python-glade2
sudo apt-get install system-config-samba

Use Dash and search for 'samba'. It will ask for the user's password first. The samba password can also be set by

sudo smbpasswd -a USERNAME

A non-gui way to configuration samba is adding the following to the end of /etc/samba/smb.conf file, sudo nano -w /etc/samba/smb.conf (-w means no-wrap). Any line beginning with a semicolon (“;”) or a hash (“#”) character is ignored.

[brb]
        path = /home/brb
;       writeable = no
;       browseable = yes
        guest ok = yes

• Share between ubuntu and linux On the client file manager, type smb://192.168.1.XX/
• https://help.ubuntu.com/community/Samba

• (2020-04-27) Ubuntu 18.04. (2022-03) Ubuntu 20.04. This is following the class "Building an Ubuntu Home Server" in lynda.com
1. mkdir /mnt/stored/shared
2. chmod 444 /mnt/storage/shared # optional
3. sudo apt install samba
4. sudo nano /etc/samba/smb.conf. Scroll down to the bottom and add

[fileshare]
  comment = share files
  path = /mnt/storage/shared
  readonly = yes
  create mask = 0444
  directory mask = 0444

5. testparm
6. sudo systemctl restart smbd
7. sudo smbpasswd -a CurrUserName (required)
8. sudo useradd user2 # optional
9. sudo passwd user2 # optional
10. sudo smbpasswd -a user2 # optional
11. sudo ufw allow 139/tcp # depends
12. sudo ufw allow 445/tcp # depends

On Windows PC, go to start and open 'Run' then enter ip with double backslash. Like this (\\192.168.1.XX). On macOS/Linux, "Connect to Server" in the file browser, smb://192.168.1.XX/fileshare.

On Android, FE explorer, click "+". Enter Display Name, Host Name IP, Path, Port 445, User Name/PW. Save. It works.

Raspberry pi

Build your own NAS drive with Raspberry Pi

Share printer

How to Make Your Own Wireless Printer With a Raspberry Pi

create mask, directory mask, UMASK

• Understanding UMASK with Linux and Samba
• How to create a Samba share
  • create mask = 0660: files in the share are created with permissions to allow all group users to read and write files created by other users.
  • directory mask = 0770: as before, but for directories.

Remove and re-install Samba

$ sudo apt-get remove --purge samba
$ sudo apt-get remove --purge smbclient libsmbclient

$ sudo apt-get install samba
$ sudo apt-get install smbclient libsmbclient

SambaCry vulnerability and check Samba version

http://pcworld.com/article/3199106/linux/the-sambacry-scare-gives-linux-users-a-taste-of-wannacry-petya-problems.html

To check your samba version

$ smbd -V
Version 4.3.11-Ubuntu

Mounting a Samba Share using the cifs-utils package

• Mounting a Samba Share
• How to Mount Windows Share on Linux using CIFS

sudo mount -t cifs \
  -o username=YOURUSERNAME,password=YOUPASSWORD \
  //server_name_or_ip/shareName \
  /mnt/folder_to_mount_to/

Permission denied on soft-link folders

(Works on Ubuntu 22.04) How do you make samba follow symlink outside the shared path

[global]
allow insecure wide links = yes

[share]
follow symlinks = yes
wide links = yes

sudo service smbd restart

Example of /etc/samba/smb.conf

[global]
workgroup = WORKGROUP
server string = Samba Server %v
netbios name = ubuntu
security = user
map to guest = bad user
dns proxy = no
logging = syslog@0 file
allow insecure wide links = yes

[share]
comment = share files
path = /home/XXX/Path1
readonly = yes
# create mask = 0444
# directory mask = 0444
follow symlinks = yes
wide links = yes

[taichiVideo]
comment = tai chi video
path = /Path2/
read only = yes
writable = no
browsable = yes
guest ok = yes