[R4] --- PIX --- [R1]I need to configure a static route for 10.1.1.x network on R4 and configure PIX so that R4can ping 10.1.1.1 (R1). But, the configuration does not seem to work.R4!interface Ethernet0ip address 20.x.x.x.x.255.0!ip route 10.1.1.1 25...