ip nat inside source list 10 interface Dialer1 overload
!
ip nat pool groupA 10.11.0.1 10.11.0.1 netmask 255.255.255.0 type rotary
ip nat pool groupB 10.11.0.2 10.11.0.2 netmask 255.255.255.0 type rotary
!
ip nat inside destination list 101 pool groupA
ip nat inside destination list 102 pool groupB
!
!
access-list 10 permit ip 10.11.0.0 0.0.0.255
access-lsit 101 permit tcp any any range 8000 9400
access-list 102 permit tcp any any range 50 1024

Named Access-List…

ip nat pool CCTV 192.168.200.20 192.168.200.20 prefix-length 24 type rotary
ip nat inside destination list CCTV_PORTS pool CCTV
!
ip access-list extended CCTV_PORTS
permit tcp any any range 15000 15007
permit udp any any range 15000 15200