redirect by ip to pool

I guess I should add in a bit more. Basically I want to connect to some of our database servers, however they are on a different network. So the idea would be for the load balancer to drop any traffic on that port that didn't orginate from our external ip.

I gave this a try.

rule filter_clients_rule {
   when CLIENT_ACCEPTED {
      if { [IP::remote_addr] == $ext_ip and [TCP::local_port] == 3306 } {
         log local0.info "accepted connection from [IP::remote_addr]"
         pool mysql
      } else {
         log local0.info "rejected connection from [IP::remote_addr]"
         reject
      }
   }
}

But it threw up a few errors when I went to save.