Juniper SRX DHCP Server
I am adding a new VLAN to my network and I need my SRX to hand out IP addresses for that subnet. The vlan number I am using is 19. I am calling this network PUBLICVLAN Set up the irb … Continue reading →
Category Archives: Juniper
JunOS : Versions running on dual partitions are not same
This appears on the console when booting a Juniper device: WARNING: JUNOS versions running on dual partitions are not same This will happen on an upgrade of JunOS. To resolve this issue, make sure you are currently booted on the … Continue reading →
Configuring DNAT on Juniper SRX300
I have a web server (10.9.21.17) behind my Juniper SRX firewall. I want to make it available to the Internet. I have one static public ip address (1.1.1.116) and it is bound to the interface facing the Internet edit security … Continue reading →
Restore Juniper SRX from backup
Assuming you backup your SRX every time you make a change (see here) , you may have a need one day to restore your settings. To do so root@srx# load replace scp://username:password@IP.Of.Backup.Server/path/NameOfConfigFileToLoad.conf.gz root@srx# commit Where: username is a username … Continue reading →
Backup your Juniper SRX every time you commit changes made to it
Add the following to your configuration Set up a location to scp your configurations to set up the time zone and ntp service – see my note Juniper – How to configure NTP Next – setup your host name:| set … Continue reading →
Juniper – How to configure NTP
Below provides the basic commands for configuring the date, time and NTP on your Juniper Set the name servers set system name-server your.name.server.1 set system name-server your.name.server.2 commit Configure the Time Zone set system time-zone America/New_York Configure NTP set system … Continue reading →
Using SCP to back up Juniper Router Configs
srx1> start shell % scp /config/juniper.conf.gz username@myserver.domain.com:/someplace/myrouter.conf.gz Where: /config/juniper.conf.gz will be the latest config that you saved with the “commit” command username – is the username to use to authenticate to the server you are copying the config to myserver.domain.com … Continue reading →
DHCP and/or Ping does not work on inside interface on SRX 300
Problem: Traffic passes through to the outside/Internet on SRX, but the dhcp server does not assign ip addresses and you cannot ping the SRX from the inside Solution: The system services were blocked on the inside network. Example as follows: … Continue reading →