https://wiki.pedromussato.com/index.php?action=history&feed=atom&title=Create_DHCP_server_on_Ubuntu 2026-04-10T13:05:54Z Revision history for this page on the wiki MediaWiki 1.42.3 https://wiki.pedromussato.com/index.php?title=Create_DHCP_server_on_Ubuntu&diff=255&oldid=prev 2025-10-18T11:52:22Z

<p>Created page with &quot;== 1. Install the DHCP Server == &lt;code&gt;sudo apt update sudo apt install isc-dhcp-server -y&lt;/code&gt; ---- == 2. Set the network interface == Edit the default configuration file: &lt;code&gt;sudo nano /etc/default/isc-dhcp-server&lt;/code&gt; Find this line: &lt;code&gt;INTERFACESv4=&quot;&quot;&lt;/code&gt; And replace it with your actual network interface (for example &lt;code&gt;eth0&lt;/code&gt;, &lt;code&gt;ens33&lt;/code&gt;, or &lt;code&gt;enp0s3&lt;/code&gt;): &lt;code&gt;INTERFACESv4=&quot;eth0&quot;&lt;/code&gt; == 3. Configure the DHCP scope == Ed...&quot;</p> <p><b>New page</b></p><div>== 1. Install the DHCP Server ==<br /> &lt;code&gt;sudo apt update<br /> sudo apt install isc-dhcp-server -y&lt;/code&gt;<br /> ----<br /> <br /> == 2. Set the network interface ==<br /> Edit the default configuration file:<br /> &lt;code&gt;sudo nano /etc/default/isc-dhcp-server&lt;/code&gt;<br /> Find this line:<br /> &lt;code&gt;INTERFACESv4=&quot;&quot;&lt;/code&gt;<br /> And replace it with your actual network interface (for example &lt;code&gt;eth0&lt;/code&gt;, &lt;code&gt;ens33&lt;/code&gt;, or &lt;code&gt;enp0s3&lt;/code&gt;):<br /> &lt;code&gt;INTERFACESv4=&quot;eth0&quot;&lt;/code&gt;<br /> <br /> == 3. Configure the DHCP scope ==<br /> Edit the main configuration file:<br /> &lt;code&gt;sudo nano /etc/dhcp/dhcpd.conf&lt;/code&gt;<br /> Replace the contents with something like this:<br /> &lt;code&gt;default-lease-time 600;<br /> max-lease-time 7200;<br /> authoritative;<br /> <br /> subnet 192.168.50.0 netmask 255.255.255.0 {<br /> range 192.168.50.10 192.168.50.100;<br /> option routers 192.168.50.1;<br /> option subnet-mask 255.255.255.0;<br /> option domain-name-servers 8.8.8.8, 1.1.1.1;<br /> }&lt;/code&gt;<br /> Explanation:<br /> <br /> * &lt;code&gt;range&lt;/code&gt;: IP address pool to be handed out<br /> * &lt;code&gt;routers&lt;/code&gt;: default gateway for clients<br /> * &lt;code&gt;domain-name-servers&lt;/code&gt;: DNS servers provided to clients<br /> <br /> ----<br /> <br /> == 4. Restart and enable the service ==<br /> &lt;code&gt;sudo systemctl restart isc-dhcp-server<br /> sudo systemctl enable isc-dhcp-server&lt;/code&gt;<br /> ----<br /> <br /> == 5. Verify it’s running ==<br /> Check the service status:<br /> &lt;code&gt;sudo systemctl status isc-dhcp-server&lt;/code&gt;<br /> Check the leases file for assigned IPs:<br /> &lt;code&gt;tail -f /var/lib/dhcp/dhcpd.leases&lt;/code&gt;</div>

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