FirewallDNS
    Enterprise Firewalls

    How to Change DNS on Juniper SRX

    By [FILL IN], [FILL IN] · Last updated

    Set Junos name servers and DHCP propagation.

    Before you start

    You need a FirewallDNS account (see pricing). Sign in to your dashboard, register your public IP address and copy your DNS server addresses. Replace <FIREWALLDNS-PRIMARY> and <FIREWALLDNS-SECONDARY> below with them.

    Step by step

    1. Enter configuration mode.
    2. Set system name servers.
    3. Update the DHCP pool.
    4. Commit.

    Junos CLI

    configure
set system name-server <FIREWALLDNS-PRIMARY>
set system name-server <FIREWALLDNS-SECONDARY>
set access address-assignment pool LAN family inet dhcp-attributes name-server <FIREWALLDNS-PRIMARY>
set access address-assignment pool LAN family inet dhcp-attributes name-server <FIREWALLDNS-SECONDARY>
commit

    Verify it works

    1. Renew DHCP on a client (Windows: ipconfig /renew, macOS: reconnect Wi-Fi).
    2. Run nslookup example.com and check which server answered.
    3. Open the live log in your dashboard. New lookups should appear within seconds.

    Learn more

    Not protected yet?

    FirewallDNS costs $2.90 per device per month.