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Forum Discussion

sys-team_172267's avatar
sys-team_172267
Icon for Nimbostratus rankNimbostratus
Mar 10, 2016

Blocking specific "USER AGENT" version and lower by iRule

Hello,   i want to use iRule to block requests that contain some "USER AGENT" version and lower("=<").   how can i do it?   Thanks.  
iRules
LTM
security
user agent
Krystian_Baniak's avatar
Krystian_Baniak
Icon for Altocumulus rankAltocumulus
Mar 14, 2016

Hi,

 

you will be able to do it when: * split HTTP User-Agent string into tcl list * for given set of Browsers (like Chrome) parse version list element to a float: version.minor_version * use <= on such a data, even using a data-group holding rules definitions:

 

Chrome := 26.0

 

Firefox := 27.1