ZyXEL Communications SBG5500-A, User Manual

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Chapter 25 Troubleshooting
SBG5500 Series User’s Guide
256
• Make sure you have logged out of any earlier management sessions using the same user account
even if they were through a different interface or using a different browser.
• Try to access the SBG using another service, such as Telnet. If you can access the SBG, check the
remote management settings and firewall rules to find out why the SBG does not respond to HTTP.
I can see the Login screen, but I cannot log in to the SBG.
1
Make sure you have entered the password correctly. The default admin password is 1234 . The field is
case-sensitive, so make sure [Caps Lock] is not on.
2
You cannot log in to the web configurator while someone is using Telnet to access the SBG. Log out of
the SBG in the other session, or ask the person who is logged in to log out.
3
Turn the SBG off and on.
4
If this does not work, you have to reset the device to its factory defaults. See Section 25.1 on page 254 .
I cannot Telnet to the SBG.
See the troubleshooting suggestions for I cannot see or access the Login screen in the web configurator.
Ignore the suggestions about your browser.
I cannot use FTP to upload / download the configuration file. / I cannot use FTP to upload new
firmware.
See the troubleshooting suggestions for I cannot see or access the Login screen in the web configurator.
Ignore the suggestions about your browser.
25.3 Internet Access
I cannot access the Internet.
1
Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick
Start Guide and Section 1.5 on page 17 .
2
Make sure you entered your ISP account information correctly in the Configuration > WAN / Internet >
WAN Setup or Mobile screen. These fields are case-sensitive, so make sure [Caps Lock] is not on.
3
Disconnect all the cables from your device and reconnect them.