Draytek Vigor2820 Series User Manual page 75

is to forward all access request with public IP address from external users to the mapping
private IP address/port of the server.
The port redirection can only apply to incoming traffic.
To use this function, please go to NAT page and choose Port Redirection web page. The
Port Redirection Table provides 20 port-mapping entries for the internal hosts.
Press any number under Index to access into next page for configuring port redirection.
Vigor2820 Series User's Guide 67