ZyXEL Communications XGS-4528F, User Manual, Page: 460 / 491

Chapter 55 Troubleshooting
XGS-4526/4528F/4728F User’s Guide
460
1
Make sure you have entered the user name and password correctly. The default
user name is admin, and the default password is 1234. These fields are case-
sensitive, so make sure [Caps Lock] is not on.
2
You may have exceeded the maximum number of concurrent Telnet sessions.
Close other Telnet session(s) or try connecting again later.
Check that you have enabled logins for HTTP or Telnet. If you have configured a
secured client IP address, your computer’s IP address must match it. Refer to the
chapter on access control for details.
3
Disconnect and re-connect the cord to the Switch.
4
If this does not work, you have to reset the device to its factory defaults. See
Section 4.6 on page 54 .
Pop-up Windows, JavaScripts and Java Permissions
In order to use the web configurator you need to allow:
• Web browser pop-up windows from your device.
• JavaScripts (enabled by default).
• Java permissions (enabled by default).
I cannot see some of Advanced Application submenus at the bottom of the
navigation panel.
The recommended screen resolution is 1024 by 768 pixels. Adjust the value in
your computer and then you should see the rest of Advanced Application
submenus at the bottom of the navigation panel.
There is unauthorized access to my Switch via telnet, HTTP and SSH.
Click the Display button in the System Log field in the Management >
Diagnostic screen to check for unauthorized access to your Switch. To avoid
unauthorized access, configure the secured client setting in the Management >
Access Control > Remote Management screen for telnet, HTTP and SSH (see
Section 46.11 on page 420 ). Computers not belonging to the secured client set
cannot get permission to access the Switch.