ZyXEL Communications P-660HW-Tx v3 User Manual page 282

Chapter 18 Remote Management
Next click on the Firewall link in Note3 of the screen. For WAN access: If you want
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to specify the source IP address for remote management, click on the Firewall
link. This will then redirect you to the main Firewall screen (Security >Firewall >
General).
Here you will choose the Custom option (please note that the Custom option will
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inherit the default firewall behaviour of the firewall option that was specified
previously (High or Medium, BUT NOT for Low as it blocks WAN to LAN access
but this can easily be changed).
Next go to the Rules tab and in Packet direction choose WAN to WAN/Router.
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Click the Add button.
In the Edit rule page that appears you may want to change the source address
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from Any. Otherwise in Service > selected services remove Any(TCP) and
Any(UDP) and move HTTP(TCP:80) from available services to selected
services. Now click on the Apply button.
Note: it is recommended if you are allowing WAN access even temporarily to change
the default password (in Maintenance > System > General). In the New
Password box, type in a new password (up to 30 characters). Retype it in the
Retype to confirm box. Then click Apply to save your changes. Use the new
password to login.
Use this screen to specify how to connect to the ZyXEL Device from a web
browser, such as Internet Explorer.
Note: If you disable the WWW service in the Remote MGMT > WWW screen, then
the ZyXEL Device blocks all HTTP connection attempts.
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P-660HW-Tx v3 User's Guide