Category Archives: Networking

JunOS : Configuring DHCP forwarder on QFX serie

Here is how to configure DHCP relay on the QFX platform. 1. Define a DHCP server group with DHCP servers IP address(es) : set forwarding-options dhcp-relay server-group <server-group-name> <ip.address> Example : If you want to name the group as “PRD-dhcpSrv” and the IP of the server is 10.1.1.10 : set forwarding-options dhcp-relay server-group PRD-dhcpSrv 10.1.1.10… Read More »

JunOS : Port forwarding on Juniper SRX

A friend of mine who was used to the legacy and EOL SSG/ScreenOS platform and he just jumped into the new world of SRX/JunOS gave me the motivation to write this article. As the syntax is quite different between the two platform, it may be harder to get at first and the following example should… Read More »

JunOS : Configure DNS forwarders on SRX device

If you want your SRX firewall to handle DNS requests on your network, you need to configure the forwarders to make this possible, in addition to a few other parameters. First, make sure you have no local forwarders set on the device itself as it cannot be used along with the dns-proxy service – if… Read More »