For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

Amit_Grover_171's avatar
Amit_Grover_171
Icon for Nimbostratus rankNimbostratus
Aug 10, 2015

Is it possible to perform DNS SRV query at node level so that traffic will directed on same.

Hi,   In my scenario I am using Outbound SNAT and for outbound traffic from my LTM but traffic should forward in outbound according to its DNS srv which can not be static IP. For this work-aroun...
application delivery
devops
iRules
LTM
TMOS
VernonWells's avatar
VernonWells
Icon for Employee rankEmployee
Aug 12, 2015

A traffic type profile indicates to BIG-IP how to handle traffic in the forwarding path. Since your VS will not be receiving DNS traffic for forwarding, it is not necessary to add the dns profile to it. You would need to use a sideband connection from an iRule attached to the existing VS. However, as I say, if you do this, you won't have DNS iRule commands available, so you'll have to manually construct your request (e.g., using 

binary format
) and your response (e.g., using 
binary scan
).

I strongly recommend that you consider engaging F5 Professional Services, a consulting arm of F5. No matter how you approach this, it's going to require a fair amount of work and will be somewhat complex.

Having said that, iCall allows you to execute a Tcl script periodically. It is also documented on DevCentral.