An interesting question came up the other day, we have multiple endpoints sending syslogs into a F5 VIP fronting a syslog collector…all on port 514. Our logging team wanted to change the port from 514...
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F5 iRule — Syslog Cloning iRule with HSL or Sideband
HSL_syslog_cloning First lets create two(2) pools with a single node in each. These will be used in our iRule to clone the UDP datagram to both. pool_SyslogServer001 pool_SyslogServer001 Now that we created the two(2) pools...
Continue reading...F5 iRule — No Pool Members Available Vanity Page
I wrote a iRule post located here, where I describe the essentials behind how beneficial iRules can be and the many use cases they have. I stumbled across a situation the other day for a...
Continue reading...F5 BIGIP — iRule Server Selection based on Client Source Address and Port
A interesting request came up today regarding a Web Service we provide to multiple clients, all of whom have peering points connecting their IP network to ours using private address. The request was to have...
Continue reading...F5 BIGIP — iRule Block URI for external Client’s only
So, I had a cool question asked to me today regarding an F5 VIP used by a web application. “Can we block a certain URI from external client’s but allow internal client’s to visit it?”...
Continue reading...F5 BIGIP — iRules….What are they?
What is an iRule? What are iRules? What can I do with iRules? What is an iRule example? One of the most advantageous features that an BIG IP F5 Local Traffic Manager brings is it’s...
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