Yes its possible.
Port command under service translates the destination port.
content whol_eiwebsit_80
add service srvr1
add service srvr2
vip address 128.1.1.1 <-- Vip
port 80 <-- Listening on port 80
protocol tcp
url "/*"
active
service srvr1
ip address 10.10.10.1
protocol tcp
port 5555 <-- will translate dest port
keepalive type tcp
keepalive port 5555
active
service srvr2
ip address 10.10.10.2
protocol tcp
port 5555
keepalive type tcp
keepalive port 5555
active
HTH
Syed Iftekhar Ahmed