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DHCP Server

##### TO CONFIGURE THE DHCP SERVER ###### Step 1 ##### TO ASSIGN THE HOSTNAME ##### hostname dhcp.zoom.com hostname ( to check ) ifconfig ( to check the ip ) vi [ … ]

OSI Model

Shortcut to remember the flow of OSI model (APSTNDP) ApplicationLayer a PresentationLayer p SessionLayer s TransportLayer t NetworkLayer n DatalinkLayer d PhysicalLayer p

Sublime Text Installation In Ubuntu

For Sublime-Text-2: sudo add-apt-repository ppa:webupd8team/sublime-text-2 sudo apt-get update sudo apt-get install sublime-text For Sublime-Text-3: sudo add-apt-repository ppa:webupd8team/sublime-text-3 sudo apt-get update sudo apt-get install sublime-text-installer If you want to remove any [ … ]

To Deny Root Login

open Terminal and edit below config file vi /etc/ssh/sshd_config and search for /Root and make below changes #LoginGraceTime 2m PermitRootLogin no #StrictModes yes #MaxAuthTries 6 #MaxSessions 10

Sudo Permissions

In the terminal open Visudo file. Enter the name to which user you are giving sudo permissions In visudo file, then save & Exit. root ALL=(ALL)ALL rahul ALL=(ALL) ALL srinu [ … ]