Port forwarding allows you to forward any traffic on an IP/port pair on the Array appliance, to an IP/port pair on the inside network.

Configure in CLI:
(config)#fwd tcp <local_ip> <local_port> <remote_ip> <remote_port> [timeout ]
(config)#fwd udp <local_ip> <local_port> <remote_ip> <remote_port> [timeout]
(config)#fwd tcp 10.10.0.2 4000 192.168.10.10 22 300

Webui Array OS 6.4 or later in Mode "config":
under "system configuration" -> Advanced Networking -> "Port Forwarding" tab -> TCP/UDP -> "Add TCP Entry"