Lab04 DHCP - rosepheobieshea/SYS-255-Tech-Journal GitHub Wiki

Useful Commands for Windows
ipconfig /release - releases the current dhcp lease
ipconfig /renew - renews dhcp lease
ipconfig /all - displays lots of wonderful information including the obtain and expiry date for dhcp lease.

Installing and configuring DHCP on Rocky Linux

  1. Install DHCP services dnf install dhcp-server
  2. Configure with config file at /etc/dhcp/dhcpd.conf Config file should look like this:
subnet 10.0.5.0 netmask 255.255.255.0 {
    option routers 10.0.5.2;
    option subnet-mask 255.255.255.0;
    option domain-name “rose.local”;
    option domain-name-servers 10.0.5.5;
    range 10.0.5.100 10.0.5.150;
    default-lease-time 3600;
    max-lease-time 14400;
}

Note: Lease times are measured in seconds. Also if you set them to the same value the service will not like it and not listen to you.

  1. Starting the service systemctl start dhcpd
  2. Enable service to run at startup systemctl enable dhcpd
  3. Configure firewall to allow DHCP service firewall-cmd --add-service=dhcp --permanent firewall-cmd --reload