#dns #tcp #ip #ubuntu #linux #debian #zone #bind #ttl #systemctl ### **Managing the BIND DNS Service on Ubuntu** Here are the basic commands to **check, restart, stop, and start** the **BIND 9 DNS server** on Ubuntu. --- ### **1. Check BIND 9 Service Status** To verify if the **BIND 9 service** is running: `sudo systemctl status bind9` - If running, you should see: **`active (running)`** ✅ - If not, check the logs for possible issues. --- ### **2. Restart BIND 9** To apply changes after modifying **BIND configurations**, restart the service: `sudo systemctl restart bind9` --- ### **3. Stop BIND 9** To stop the **DNS server**: `sudo systemctl stop bind9` --- ### **4. Start BIND 9** To start the **DNS service** again: `sudo systemctl start bind9` --- [[DNS Bind, Installing and Configuring]] [[DNS Bind, Add a hostname]] [[DNS UNBOUND]]