iRule Required.

Hello,

when HTTP_REQUEST {

if { [class match [IP::client_addr] equals my_ip_dg] && [class [string tolower [HTTP::header "User-Agent"]] contains allow_user_agent ] } {
     Do what's you want
}

}

I let you optimise Irule according to your needs...

Regards

Try with [HTTP::header User-Agent]

Here you have some similar example https://devcentral.f5.com/questions/block-a-user-agent-with-an-irule

Thanks for the response and Time. I go through the link.