Samba Server type is configured in the [global] section of the /etc/samba/smb.conf file. Below are 3 types of Samba servers used while configuring Samba. Stand-Alone Server Domain Member Server Domain Controller Stand-Alone Server A stand-alone Samba server can be a workgroup server or a member of a workgroup environment and does not participate in a Windows domain in any way. The following is an example of configuring the [global] directives in /etc/samba/smb.conf for a stand- alone … [Read more...] about What are different Samba Server Types
Archives for December 2017
How to use rndc command (command-line administration tool for named)
The rndc utility is a command-line tool to administer the named service, both locally and from a remote machine. To prevent unauthorized access to the service, rndc must be configured to listen on the selected port (port 953 by default), and an identical key must be used by both the service and the rndc utility. The rndc key is generated by using the following command: # rndc-confgen -a wrote key file "/etc/rndc.key" This command creates the /etc/rndc.key file, which contains the key. # … [Read more...] about How to use rndc command (command-line administration tool for named)
Understanding DNS zone files
What are DNS zone files Information about domains in the DNS database is stored in zone files. A zone file consists of directives and resource records. Directives tell the nameserver to perform tasks or apply special settings to the zone. Resource records define the parameters of the zone and store host information. Directives are optional, but resource records are required. Resource record fields A resource record has the following fields (some fields are optional, depending on the … [Read more...] about Understanding DNS zone files
What happens in the Background when you execute the “useradd” command under Linux
When you execute the "useradd" command to add a new user on the server, in the background, there are several files updated and created. This post lists out the exact steps carried out in the background when you execute the below command. # useradd john 1. A new line for user john is created in /etc/passwd. The new line in /etc/passwd file will look similar to the line shown below. john:x:1001:1001::/home/john:/bin/bash The new line in /etc/passwd file has the following fields: It … [Read more...] about What happens in the Background when you execute the “useradd” command under Linux
What is the purpose of .bash_profile file under User Home Directory In Linux
What is the purpose of ~/.bash_profile file Apart from having a home directory to create and store files, users need an environment that gives them access to the tools and resources. When a user logs in to a system, the user’s work environment is determined by the initialization files. These initialization files are defined by the user’s startup shell, which can vary depending on the release. The default initialization files in your home directory enable you to customize your working … [Read more...] about What is the purpose of .bash_profile file under User Home Directory In Linux
Understanding chroot Jail
As the name implies, a chroot operation changes the apparent root directory for a running process and its children. It allows you to run a program (process) with a root directory other than /. The program cannot see or access files outside the designated directory tree. For example, you can run a program and specify its root directory as /home/user/jail. In this case, the program’s root directory is actually /home/user/jail. The program would not be aware of, or able to access, any files … [Read more...] about Understanding chroot Jail