ZyXEL Communications ZYWALL USG 20W - Page 24

ZyXEL – ZyWALL USG Support Notes
All contents copyright (c) 2010 ZyXEL Communications Corporation.
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Step 2. Click the Add button to create a mapping rule.
Step 3. In this page user needs to configure:
- Rule’s name
- Select Virtual Server type to let USG-50 do packet forwarding
- Fill in the Original IP (WAN IP) address
- Fill in the Mapped IP (Internal FTP server IP) address
- Select the service to be mapped (FTP); the ports will be selected
automatically
Step 2. Configure the mapping rule. User needs to select the WAN interface
for the incoming access, choosing the WAN IP for users to access.
Step 3. Then configure the incoming ports, translation ports and the internal
FTP server IP address.
In this case, when the user accesses the WAN IP address with the port 20/21,
the ZyWALL-5 UTM will forward the request to the FTP server, 192.168.5.33,
with the port 20/21. Thus, user can access the internal FTP server without
problem.
Step 4. The port forwarding rule enables delivery of the access request from
WAN to the internal network, but the user still needs to configure access
privileges by adjusting the firewall rule. By default all WAN to LAN access is
dropped.