All posts in: BIG-IP

How to log locally Using F5 iRule for quick troubleshooting


There are times that as an F5 administrator, you wanted to log traffic to debug and troubleshoot an request or response that is processed by F5 appliance. Here is handy iRule script that logs following – Client IP address & port – Requested URL – Virtual Server Name specified in F5 – ..

Configure F5 SSL for WebLogic Servers


In this scenario, SSL is offloaded in F5 appliance that load balances HTTP WebLogic Servers behind it. You might have experienced a situation that F5 has responded ‘http’ response for all ‘https’ requests from client browsers and the applications were not rendered properly. In such ..

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Pass Country Code in URL using iRule and Geolocation


Here is a simple example that explains how to pass Country Code as variable in URL using iRule. I assume that you have already configured your F5 appliance with GeoLocation database, otherwise refer my article BIG-IP LTM url redirection based on Geolocation and set it up. In this example, when someone ..

iRule to use Data Group


You might have come across a situation where only limited set of IP address need to be granted access to a web page or web services. And these IP address need updates from time to time when ever you provision the web services to your new clients. Obviously, such IP address list shouldn’t be written ..

LTM – Disable or Forced Offline Pool member for application maintenance


When you wanted to perform maintenance of a specific application, LTM has got a good feature where you can either disable or forced offline at pool member level (IP address and port), so the node (server) still serves client requests received on different ports for other application. Before you proceed, ..

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Enabling Perfect Forward Secrecy Cipher Suites on F5 BigIP LTM


Every SSL connection begins with a handshake, during which the two parties communicate their capabilities to the other side, perform authentication, and agree on their session keys. The session keys are then used to encrypt the rest of the conversation (session), possibly spanning multiple connections. ..

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BIG-IP F5 iRule commands


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Configure High Availability (Active/Standby) of BIG-IP F5 LTMs


HA Prerequisites: All devices in device group are running the same version of BIG-IP system software. Configure NTP and verify that both devices show same date and time.   You must perform this task locally on each device in the device group. Step 1: Create dedicated VLAN and Self IP for HA: Here ..

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Different Load balancing methods of BIG-IP LTM


BIG-IP LTM provides various load balancing methods Under Pool > New Pool screen option. Most load balancing methods will allow you to choose between member and node. You will see the difference in the further article. Basically, you can load balance between either nodes or members. Node is just an IP address ..

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iRule for single VIP but with multiple pool


  Here I want to redirect our two websites visitors ( and to same public IP but to two different pool. If someone types, LTM needs to redirect to a specific path /en and specific pool name en_pool If someone types, LTM needs to ..

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