P-202H Plus v2 Support Notes
2. How do I prevent others from configuring my firewall?
There are several ways to protect others from touching the settings of your
firewall.
1. Change the default password since it is required when setting up the
firewall using Telnet, Console or Web browser.
2. Limit who can Telnet to your router. You can enter the IP address of the
secured LAN host in SMT Menu 24.11 to allow Telnet to your P-202H Plus
v2. The default value in this field is 0.0.0.0, which means you do not care
which host is trying to Telnet your P-202H Plus v2.
3. Can I use a browser to configure my P-202H Plus v2?
Yes, you can use a web browser to configure the P-202H Plus v2.
4. Why can't I configure my router using Telnet over WAN?
There are three reasons that Telnet from WAN is blocked.
1. When the firewall is turned on, all connections from WAN to LAN are
blocked by the default ACL rule. To enable Telnet from WAN, you must
turn the firewall off (Menu 21.2) or create a firewall rule to allow Telnet
connection from WAN. The WAN-to-LAN ACL summary will look like as
shown below.
Source IP= Telnet host
Destination IP= router' WAN IP
Service= TCP/23
Action=Forward
2. You have disabled Telnet service in Menu 24.11.
3. Telnet service is enabled but your host IP is not the secured host entered
in Menu 24.11. In this case, the error message
'Client IP is not allowed!'
is appeared on the Telnet screen.
4. The default filter rule 3 (Telnet_FTP_WAN) is applied in the Input Protocol
field in menu 11.5.
5. The console port is in use.
5. Why can't I upload the firmware and configuration file using FTP over
WAN?
1. When the firewall is turned on, all connections from WAN to LAN are
blocked by the default ACL rule. To enable FTP from WAN, you must turn the
All contents copyright © 2006 ZyXEL Communications Corporation.
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