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DHCP SERVER CONFIGURATION RHEL 7

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 DHCP (Dynamic Host Configuration Protocol) is a network protocol used to dynamically assign IP addresses for computers attached to the network. => Default Port : 67 (UDP) => Configuration File :  /etc/dhcp/dhcpd.conf => Install dhcp Service on the server #yum install dhcp* => Copy the example file data to the dhcpd.conf file #cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example /etc/dhcp/dhcpd.conf => Now  Edit configuration file : #vi /etc/dhcp/dhcpd.conf => Comment all the line except the following  authoritative; => edit the following details : #A slightly different .................................., below this line content subnet 192.168.0.0 netmask 255.255.255.0 { range 192.168.0.100 192.168.0.200; (Range of the IP Address for Client Machine) option routers 192.168.0.1; (Router IP address) option broadcast-address 192.168.0.255; ( place your broadcast address here) default-lease-time 600; max-lease-time 7200; } Save and Exit => Go to Client ...
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NFS SERVER CONFIGURATION

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=> NFS Network File Sharing (NFS) is a protocol that allows you to share directories and files with other Linux clients over a network. Shared directories are typically created on a file server, running the NFS server component. Users add files to them, which are then shared with other users who have access to the folder. => Package = nfs-utils   => Default Port = 2049   => Configuration file : /etc/exports    => Steps for Configuration:   :- Install NFS Package   :- #yum intsall nfs-utils*   :- #systemctl restart nfs.service => Add NFS Service to firewall : :- #firewall-cmd --zone=public --permanent --add-service=nfs => Add mountd service to firewall : : - #firewall-cmd --permanent --add-service=mountd => Add rpc service to firewall : :- #firewall-cmd --permanent --add-service=rpc-bind => Make a directory to share  :- #mkdir /nfsserver => Change the permission of the Directory :- #chmod 770 /...
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how to configure ftp server in linux redhat 7 step by step command

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FTP is used to transfer files between computers on a network. You can use FTP to exchange files between computer accounts, transfer files between an account and a desktop computer, or access online software archives. =>   Install     vsftpd for   FTP Server =>    #yum install vsftpd.x86_64 –y =>  Then   start the service =>  #systemctl start vsftpd =>  Now check the status =>  #systemctl status vsftpd   =>  #Now check ftp server working or not    =>  #firefox ftp://192.168.1.10( Server IP)    => Now you will able to see the data on ftp server Thank You...
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interview Questions on User Management in Linux

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=> What will be the ownership of files owned by a deleted use? => How to change user’s home direcroty, login shell, uid , gid etc? =>  How to set ACLs so that the directory’s created in a ACL applied directory get inherited ACLs set? =>  Explain /etc/default/useradd =>  How to assign a duplicate uid to a user ? =>  How to recover a corruted/damaged password file ? =>  pwconv and pwunconv command? => H ow will you differentiate a primary and secondary group? =>  How to add more than one secondary group to user ? =>  finger command? =>  How to force a user to change its password on first login attempt? =>  Can you edit /etc/passwd, /etc/shadow and /etc/group files ? =>  What is configuration file for sudo and how to write in it ? =>  How to assign sudo access to a user ? =>  What is the meaning for three ALLs in assigning sudo access ? =>  How to assign the sudo access ...
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How to configure Mail Server in Redhat Linux

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An email message is created using a mail client program. Mail is digital messaging service and which generally consists of a message body . =>   These are the most commonly used in the transfer of email Simple Mail Transport Protocols (SMTP-Port 25) delivery from a client application to the server, and from an originating server to the destination server, is handled by the  Simple Mail Transfer Protocol  ( SMTP ). =>  Mail Access Protocols POP (Post Office Protocol):  -( P ort 110 ) It  is an email accessing protocol used to receive mails from a mail server and  POP  will download all emails from the server to the user’s computer. IMAP (Internet Message Access Protocol):- ( Port 143 ) It   is another email accessing protocol however it is used to access the mails from the server.IMAP will synchronize a copy of the mail on the server to the user’s computer. All mail data is kept on the server as well as the user’s computer until they ...
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Kernel and Module Interview Questions

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=>   How to check the machine’s architecture ? =>   How to check the current kernel version running ? =>   How to see whether a module is loaded or no ? =>   How to load/unload a module ? =>   Where are kernel modules stored ? =>   How to find information about a module ? =>   How to upgrade your kernel ? =>   How to set kernel parameters?
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SAMBA Server Configuration in Redhat Linux 8 and Redhat 7

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=>  Samba provides server and client software to allow file sharing between Linux and Windows machines. => Default Port : "445" => Daemon : "smb" => Install SAMBA Server   =>  # yum install samba* -y => Enable the samba service =>  #systemctl enable smb => Now start the service =>  #systemctl start smb => Disable the firewall or add the samba port =>  #systemctl stop firewalld =>  #systemctl disable firewalld => Create directory for sharing =>  #mkdir shared_folder => Assign full permission   =>  #chmod 777 shared_folder/ => Create users  =>  #adduser sam =>  #adduser tom => Make users as "samba" users =>  #smbpasswd -a sam =>  #smbpasswd -a tom => Configure the samba file   =>  #vim /etc/samba/smb.conf => Add the following lines :  => Save and exit => Restart samba services =>  #systemct...
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