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Page 271 / 404 Scroll up to view Page 266 - 270
Chapter 26 Troubleshooting
P-661HNU-Fx User’s Guide
271
•
WPA2:
WPA2 (IEEE 802.11i) is a wireless security standard that defines
stronger encryption, authentication and key management than WPA. It requires
the use of a RADIUS server and is mostly used in business networks.
•
WPA:
Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. It
requires the use of a RADIUS server and is mostly used in business networks.
•
WEP:
Wired Equivalent Privacy (WEP) encryption scrambles the data
transmitted between the wireless stations and the access points to keep
network communications private.
26.6
USB Device Connection
The ZyXEL Device fails to detect my USB device.
1
Disconnect the USB device.
2
Reboot the ZyXEL Device.
3
If you are connecting a USB hard drive that comes with an external power supply,
make sure it is connected to an appropriate power source that is on.
4
Re-connect your USB device to the ZyXEL Device.
5
If the problem persists, make sure the option
File Sharing Services(SMB)
is
enabled in the
Web Configurator
- see
Section 3.5.1.1 on page 52
.
The USB device is properly connected, but I cannot see it when I open My
Computer
1
If the USB device is connected to the ZyXEL Device, it won’t be listed directly
under My Computer in Windows. To access the USB device - see
Section 3.5.2 on
page 55
.
2
If you still cannot see the specific share you are trying to access, open the
Web
Configurator
and go to
Network Setting > File Sharing
. Make sure that the
share has a check below the symbol
“#”
. This means that the USB Device is
enabled for sharing - see
Section 3.5.1 on page 52
.
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Chapter 26 Troubleshooting
P-661HNU-Fx User’s Guide
272
I can see the USB device but I cannot access it.
1
Restart the computer and try to access the device again. Make sure you have the
correct password
2
If the share’s settings have been set to
Private
, you may not have permission to
see the share’s content. Open the
Web Configurator
and make sure you add
your user to the list
Allow Users
in the
Add/Edit Share
screen - see
Section
3.5.1.2 on page 52
.
3
Make sure you have the correct password. If you have forgotten the password,
delete the username, restart the computer, add the username again and try to
access the device.
26.7
UPnP
When using UPnP and the ZyXEL Device reboots, my computer cannot detect
UPnP and refresh
My Network Places > Local Network
.
1
Disconnect the Ethernet cable from the ZyXEL Device’s LAN port or from your
computer.
2
Re-connect the Ethernet cable.
The
Local Area Connection
icon for UPnP disappears in the screen.
Restart your computer.
I cannot open special applications such as white board, file transfer and video
when I use the MSN messenger.
1
Wait more than three minutes.
2
Restart the applications.
Page 273 / 404
P-661HNU-Fx User’s Guide
273
C
HAPTER
27
Product Specifications
The following tables summarize the ZyXEL Device’s hardware and firmware
features.
Hardware Specifications
Table 82
Hardware Specifications
Dimensions
260 (W) x 135 (D) x 42 (H) mm
Weight
400 g
Power Specification
12V 1.0A DC
Built-in Switch
Four auto-negotiating, auto MDI/MDI-X 10/100 Mbps RJ-45
Ethernet ports
DSL Port
P-661HNU-F1: One RJ-11 DSL port
P-661HNU-F3: One RJ-45 DSL port
RESET Button
Restores factory defaults
WLAN/WPS Button
1 second: Turn on or off WLAN
5 seconds: Start WPS
USB Port
One USB v2.0 port for file sharing / print server setup / 3G WAN
Adapter
Antenna
Two external 2 dBi detachable antennas 2x2. The 2x2 technology
make use of your home environment by bouncing wireless signal
off of walls and ceilings to work around obstructions
Operation
Temperature
0º C ~ 40º C
Storage Temperature
-25º ~ 65º C
Operation Humidity
20% ~ 90% RH
Storage Humidity
20% ~ 90% RH
Distance between the
centers of the holes
(for wall-mounting)
on the device’s back
119.8mm
Screw size for wall-
mounting
M4 tap
Page 274 / 404
Chapter 27 Product Specifications
P-661HNU-Fx User’s Guide
274
Firmware Specifications
Table 83
Firmware Specifications
Default IP Address
192.168.1.1
Default Subnet Mask
255.255.255.0 (24 bits)
Default User Name
admin
Default Password
1234
DHCP Server IP Pool
Starting Address: 192.168.1.33
Size: 32
Static DHCP
Addresses
10
Static Routes
16
Device Management
Use the web configurator to easily configure the rich range of
features on the ZyXEL Device.
Wireless
Functionality
(wireless devices
only)
Allow the IEEE 802.11n, IEEE 802.11b and/or IEEE 802.11g
wireless clients to connect to the ZyXEL Device wirelessly. Enable
wireless security (WEP, WPA(2), WPA(2)-PSK) and/or MAC filtering
to protect your wireless network.
Firmware Upgrade
Download new firmware (when available) from the ZyXEL web site
and use the web configurator, an HTTP/FTP/SCP/SFTP tool to put it
on the ZyXEL Device.
Note: Only upload firmware for your specific model!
Configuration Backup
& Restoration
Make a copy of the ZyXEL Device’s configuration. You can put it
back on the ZyXEL Device later if you decide to revert back to an
earl
i
er configuration.
Network Address
Translation (NAT)
Each computer on your network must have its own unique IP
address. Use NAT to convert your public IP address(es) to multiple
private IP addresses for the computers on your network.
Port Forwarding
If you have a server (mail or web server for example) on your
network, you can use this feature to let people access it from the
Internet.
DHCP (Dynamic Host
Configuration
Protocol)
Use this feature to have the ZyXEL Device assign IP addresses, an
IP default gateway and DNS servers to computers on your
network.
Dynamic DNS
Support
With Dynamic DNS (Domain Name System) support, you can use
a fixed URL, www.zyxel.com for example, with a dynamic IP
address. You must register for this service with a Dynamic DNS
service provider.
IP Multicast
IP multicast is used to send traffic to a specific group of
computers. The ZyXEL Device supports versions 1 and 2 of IGMP
(Internet Group Management Protocol) used to join multicast
groups (see RFC 2236).
Time and Date
Get the current time and date from an external server when you
turn on your ZyXEL Device. You can also set the time manually.
These dates and times are then used in logs.
Page 275 / 404
Chapter 27 Product Specifications
P-661HNU-Fx User’s Guide
275
Logs
Use logs for troubleshooting. You can send logs from the ZyXEL
Device to an external syslog server.
Universal Plug and
Play (UPnP)
A UPnP-enabled device can dynamically join a network, obtain an
IP address and convey its capabilities to other devices on the
network.
Firewall
Your device has a stateful inspection firewall with DoS (Denial of
Service) protection. By default, when the firewall is activated, all
incoming traffic from the WAN to the LAN is blocked unless it is
initiated from the LAN. The firewall supports TCP/UDP inspection,
DoS detection and prevention, real time alerts, reports and logs.
QoS (Quality of
Service)
You can efficiently manage traffic on your network by reserving
bandwidth and giving priority to certain types of traffic and/or to
particular computers.
Remote Management
This allows you to decide whether a service (HTTP or FTP traffic for
example) from a computer on a network (LAN or WAN for
example) can access the ZyXEL Device.
•
Via HTTP/Telnet/SSH/SCP/SFTP
•
Configurable port number
•
Firmware upgrade via HTTP
PPPoE Support
(RFC2516)
PPPoE (Point-to-Point Protocol over Ethernet) emulates a dial-up
connection. It allows your ISP to use their existing network
configuration with newer broadband technologies such as ADSL.
The PPPoE driver on your device is transparent to the computers
on the LAN, which see only Ethernet and are not aware of PPPoE
thus saving you from having to manage PPPoE clients on individual
computers.
Multiple PVC
(Permanent Virtual
Circuits) Support
Your device supports one Permanent Virtual Circuits (PVCs).
Packet Filters
Your device’s packet filtering function allows added network
security and management.
Table 83
Firmware Specifications
(continued)

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