Juniper SRX Update the Operating System / Firmware
SRX Update KB ID 0000989 Problem With two brand new SRX firewalls on the bench my first task was to get them updated to the latest operating system. Solution : SRX Update Before you start get the updated Juniper software. Option 1 Update SRX firewall via Command Line 1. Connect to the firewall via either Console cable, telnet, or SSH. 2. Log on and then go to CLI mode, and then configuration mode. login: root Password: *******...
Juniper SRX Cluster (Active / Standby)
SRX Cluster KB ID 0000990 Problem I’ve had very little exposure to JUNOS and Juniper equipment, and later in the year I have to deploy some for a client in a failover cluster. So I had a good look round on the Internet, and found loads of good blog posts and KB articles like this one. The problem is they are all geared to setting up a cluster, they ASSUME you then know about security zones, how to add default routes, and setup...
Juniper SRX Alarm Light Lit
SRX Alarm Light KB ID 0000993 Problem I noticed the alarm light was lit amber on an SRX240 Juniper firewall. Solution : SRX Alarm Light This will not serve as a solution to every alarm on the SRX, but it should point you where to look, and show you how to resolve the two problems I identified on my firewall. View SRX Alarm Light Status in J-Web The status is displayed on the ‘Dashboard’ tab, here you can see I’ve got...
ENE-NG and GNS3 – Speed and Duplex Mismatch
Duplex Mismatch KB ID 0000983 Problem I don’t know why this happens sometimes with GNS3, and EVE-NG but occasionally I will get a connection between two devices that constantly complains. %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on {interface-name} (not half duplex), with {host-name} {interface-name} (half duplex). For the uninitiated, a speed/duplex mismatch, usually happens when both ends of the link are set...
Google Chrome Browser – ‘Your connection is not private’
Connection is not private KB ID 0000992 Problem Just went to open a secure web page, and got this message. Solution : Connection is not private Turns out that this is the new default behaviour for Chrome when accessing https (secure web) sites. My Chrome bowser auto updates, and has updated to Version 37.0.2062.103 m. 1. Select Advanced > Proceed to {URL you are trying to access}. 2. The next time you visit THIS URL it will...