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Appendix 3 FAQs
This section provides solutions to problems that may occur during installation
and operation of the device. Read the following if you are running into problems.
If your problem is not covered here, please feel free to go to www.tendacn.com
to find a solution or email your problems to: [email protected] or
[email protected]. We will be more than happy to help you out as soon
as possible.
1. Q: I entered the device’s LAN IP address in the web browser but cannot
access the utility. What should I do?
a
.Check whether device is functioning correctly. The SYS LED should blink a
few seconds after device is powered up. If it does not light up, then some
internal faults may have occurred.
b
.
Verify physical connectivity by checking whether a corresponding port’s link
LED lights up. If not, try a different cable. Note that an illuminated light does
NOT ALWAYS indicate successful connectivity.
c
. Run the "ping 192.168.0.1" command. If you get replies from 192.168.0.1,
open your browser and verify that Proxy server is disabled. In case that ping
fails, press and hold the "RESET" button on your device for 7 seconds to restore
factory default settings, and then run "ping192.168.0.1" again.
d
.
Contact our technical support for help if the problem still exists after you tried
all the above.
2. Q: What should I do if I forget the login password to my device?
A: Reset your device by pressing the Reset button for over 7 seconds. Note: All
settings will be deleted and restored to factory defaults once you pressed the
Reset button.
3. Q: My computer shows an IP address conflict error after having
connected to the device. What should I do?
a
.
Check if there are other DHCP servers present in your LAN. If there are
other DHCP servers except your router, disable them immediately.
b
.
The default IP address of the device is 192.168.0.1; make sure this
address is not used by another PC or device. In case that two computers or
devices share the same IP addresses, change either to a different address.
4.Q: I cannot access Internet and send/receive emails; what
should I do?
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This problem mainly happens to users who use the PPPoE or Dynamic IP
Internet connection type. You need to change the MTU size (1492 by default). In
this case, go to “WAN Settings” to change the MTU value from default 1480 to
1450 or 1400, etc.
5. Q: How do I share resources on my computer with users on Internet
through the device?
To let Internet users access internal servers on your LAN such as e-mail server,
Web, FTP, via the device, use the "Virtual Server" feature. To do so, follow steps
below:
Step 1: Create your internal server, make sure the LAN users can access
these servers and you need to know related service ports, for example, port
number for Web server is 80; FTP is 21; SMTP is 25 and POP3 is 110.
Step 2: Enter Port Forwarding (also called Port Range Forwarding on some
products) screen from device web UI.
Step 3: Complete the Start Port (also called External/Ext Port on some
products) and End Port (also known as Internal Port on some products) fields,
say, 80-80.
Step 4
: Input the internal server’s IP address. For example, assumi
ng that
your Web server’s IP address is 192.168. 0.10, then simply input it.
Step 5: Select a proper protocol type: TCP, UDP, or Both depending on
which protocol(s) your internal host is using.
Step 6: Click Enable and save your settings.
For your reference, we collected a list of some well-known service ports as
follows:
Server
Protocol
Service Port
Web Server
TCP
80
FTP Server
TCP
21
Telnet
TCP
23
Net Meeting
TCP
1503
1720
MSN Messenger
TCP/UDP
File Send:6891-6900(TCP)
Voice:1863, 6901(TCP)
Voice:1863, 5190(UDP)
PPTP VPN
TCP
1723
Iphone5.0
TCP
22555
SMTP
TCP
25
POP3
TCP
110
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Appendix 4
Remove Wireless Network from Your PC
If you change wireless settings on your wireless device, you must remove them
accordingly your PC; otherwise, you may not be able to wirelessly connect to
the device. Below describes how to do remove a wireless network from your PC.
If you are using Windows XP, do as follows:
1.
Right click "My Network Places" and select "Properties".
2.
Click “Wireless Network Connection” and then select “Properties”.
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3.
Click "Wireless Networks", select the item under "Preferred networks" and
then click the Remove button.
If you are using Windows 7, do as follows:
1.
Click Network from your desktop and select Properties.
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2.
Select "Manage Wireless Networks".
3. Click the wireless connection and select "Remove network".

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