Configuring HA in Juniper SRX

If you have been a long time Netscreen user and are thinking about upgrading to Juniper SRX, beware of the HA configuration complexity with JunOS, it is very unique and is a real challenge to master. You will definitely wish Juniper would have left it the way it was in Netscreen.

for details Ref. Juniper Knowledge base article

PKI public private key concept

PKI public private key concept

To encrypt a message                    ——> Use receiver’s public key

To decrypt a message                    ——> Use receiver’s private key

To send an encrypted signature —–> Use sender’s private key

To decrypt encrypted signature —–> Use sender’s public key

Understanding Cisco firmware versions such as T,M,ED,GD etc

For any network engineer working on Cisco products its a challenge initially to understand how to read Cisco firmware version. We have so many version information out there that it can get confusing even for an experienced engineer.

Below is a quick summary for reference:

Cisco IOS Firmware images would almost always match the following format:

Major.Version(MaintenanceVersion)<minorUpdate><T/E/S/XA/XB><ED/GD/LD/DF/Interim>

example:

IOS – 12.4(15)T4

ASA – 8.1(0)GD

IPS -  7.0(4)E4

where:

Major Version => usually involves drastic change in code compared to previous versions.

MaintenanceVersion => as the name suggests it’s a maintenance release which are usually bug fixes.

Free Fortinet firewall products demo for training.

Links for Free demo of Fortigate firewall, FortiManager and  FortiAnalyzer. Access is limited to read-only.