Pentagram Cerberus P6381-3 User manual

Installation and Operation Manual
PENTAGRAM Cerberus P6381-3
The latest versions of manual, drivers and applications are available on
www.pentagram.eu
2009-07-05

NOTE! Any information and technical data are subject to change without prior notification
and/or indication in this manual.
© 2009 PENTAGRAM
All rights reserved; copying and reproduction is strictly forbidden.

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INDEX
INTRODUCTION........................................................................................................................ 5
PACKAGE CONTENTS ................................................................................................................5
PRODUCT OVERVIEW ............................................................................................................. 6
IMPORTANT NOTES ....................................................................................................................6
FRONT PANEL .............................................................................................................................6
FRONT PANEL .............................................................................................................................6
BACK PANEL ...............................................................................................................................7
DEFAULT SETTINGS ...................................................................................................................7
RESETTING ROUTER ..................................................................................................................7
CONNECTING CERBERUS TO COMPUTER. .............................................................................8
CONFIGURE TCP/IP.....................................................................................................................8
CONFIGURE ROUTER VIA WEB BROWSER ....................................................................... 13
LOGIN .........................................................................................................................................13
NAVIGATION ..............................................................................................................................14
WIRELESS / GENERAL TAB .....................................................................................................15
WIRELESS / WPS TAB ..............................................................................................................16
WIRELESS / WIRELESS MAC FILTER TAB .............................................................................16
WIRELESS / PROFESSIONAL TAB ..........................................................................................17
LAN / LAN IP TAB ......................................................................................................................18
LAN / DHCP SERVER TAB ........................................................................................................18
LAN / ROUTE TAB .....................................................................................................................19
LAN / UPNP TAB ........................................................................................................................19
WAN / INTERNET CONNECTION TAB...................................................................................... 20
WAN / PORT TRIGGER TAB......................................................................................................21
WAN / VIRTUAL SERVER TAB..................................................................................................22
WAN / DMZ TAB .........................................................................................................................22
WAN / DDNS TAB.......................................................................................................................23
FIREWALL / GENERAL TAB .....................................................................................................24
FIREWALL / URL FILTER TAB ..................................................................................................25
FIREWALL / MAC FILTER TAB .................................................................................................25
FIREWALL / LAN TO WAN FILTER TAB ..................................................................................26
ADMINISTRATION / STATUS TAB ............................................................................................27
ADMINISTRATION / SYSTEM TAB............................................................................................27
ADMINISTRATION / FIRMWARE UPGRADE TAB.................................................................... 28
ADMINISTRATION / RESTORE/SAVE/UPLOAD SETTING TAB..............................................28
SYSTEM LOG / GENERAL LOG TAB........................................................................................29
SYSTEM LOG / SYSTEM STATUS TAB....................................................................................29
SYSTEM LOG / DHCP LEASES TAB ........................................................................................30
SYSTEM LOG / WIRELESS LOG TAB ......................................................................................30
SYSTEM LOG / ROUTING TABLE TAB ....................................................................................31
TROUBLESHOOTING............................................................................................................. 32
USING LEDS TO DIAGNOSE PROBLEMS................................................................................32
PROBLEMS WITH RESOLVING IP ADDRESS FROM THE ROUTER’S DHCP SERVER IN
WINDOWS VISTA .......................................................................................................................32
PROBLEMS WITH THE WEB INTERFACE ...............................................................................33
PROBLEMS WITH THE LOGIN USERNAME AND PASSWORD..............................................33
PROBLEMS WITH LAN INTERFACE ........................................................................................33
PROBLEMS WITH THE INTERNET ACCESS ...........................................................................33
INTERNET CONNECTION DISCONNECTS:..............................................................................33

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Introduction
The Cerberus P 6381-3 Wireless Router integrates 4-port Switch, firewall, NAT-router and
Wireless AP. Its design is dedicated to Small Office/Home Office (SOHO) wireless network
solutions. The Cerberus P 6381-3 Wireless Router will allow you to connect your network
wirelessly better than ever, sharing Internet Access, files and fun, easily and securely.
The Cerberus P 6381-3 Wireless Router complies with the IEEE 802.11g/b standards. It is
compatible with all IEEE 802.11g and IEEE 802.11b products.
Package Contents
1. PENTAGRAM Cerberus P 6381-3 router
2. Power adapter 12 V, 1 A
3. Ethernet cable (RJ-45)
4. CD
5. Quick Installation Guide

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Product Overview
Important Notes
•Do not use the router in high humidity or high temperatures.
•Do not use the same power source for the router as other equipment.
•Do not open or repair the case yourself. If the router is too hot, turn off the
power immediately and have it repaired at a qualified service center.
•Avoid using this product and all accessories outdoors.
•Place the router on a stable surface.
•Only use the power adapter that comes with the package. Using a
different voltage rating power adaptor may damage the router.
Front Panel
Front Panel
LED Action Description
Not lit No Power
PWR Lit up Power on
Not lit The Wireless function is disabled
Lit up The Wireless function is enabled
WLAN Flashing Data transfer
Not lit There is no device linked to the corresponding port
Lit up There is a device linked to the corresponding port but no
activity
WAN
LAN 1-4 Flashing There is an active device linked to the corresponding port

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Back Panel
Label Used for...
DC 12V Connecting with supplied power adapter
RESET Resetting the device.
WPS
Connecting with wireless station via WPS. Press this button
for about 2-3 seconds while you are connecting a PC of
wireless adapter with WPS function (you must enable WPS’
PBC function).
LAN 1-4 (RJ-45) Connecting with computers/devices through Ethernet cable
WAN (RJ-45) Connecting with DSL/cable modem through Ethernet cable
Default Settings
Before changing configuration familiarize yourself with these default settings.
IP Address 192.168.1.100
Subnet Mask 255.255.255.0
SSID Pentagram P 6381-3
DHCP Server Enabled
DHCP Server IP Address Pool 100 IP addresses
from 192.168.1.101
IP Address Lease Time 86400 seconds (24 hours)
User Name admin
Password pentagram
It is recommended to change User Name and Password as soon as possible.
If you ever forget the password to log in, you may need to restore the factory default settings.
This procedure is described in next section.
Resetting router
•Use the Restore function on Administrator -> Restore/Save/Upload page in the
router's Web-based Utility, or
•Use the RESET button: While router is powered on, press and hold the Reset button for
about 10 seconds. Release the reset button and wait for the router to reboot.

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Connecting Cerberus to Computer.
Cerberus can be connected to computer via Ethernet or WLAN:
Connecting via Ethernet Port (Ethernet Card)
All Ethernet ports of router are made in the technology, which automatically activates
Crossover if necessary. Thanks to autonegotiation of connection speed the router will
automatically select the maximum available speed rate. Transfer at 10/100 Mbit/s rate
requires the category 5 cable wired with RJ-45 connectors. In case of "straight" cable both
connectors must be crimped in standard EIA/TIA 568B. In case of Crossover cable one
connector must be in standard EIA/TIA 568A, and the second in EIA/TIA 568B. After
connecting the device to one of the ports, corresponding LED will begin to blink. That signals
the process of the auto-checking of port and the negotiation of connection speed rate.
Connecting via WLAN Interface (Wireless Card)
To connect PC to Cerberus via WLAN, Wireless Adapter must be properly installed and
configured and both router and PC must be in the same subnet.
Configure TCP/IP
After connecting the computer to the router (by LAN adapter or WLAN interface) the TCP/IP
protocol should be configured. The protocol should be automatically installed together with
Network card drivers. It is advised that TCP/IP should be configured to receive IP address and
all the necessary network parameters from DHCP server automatically. You can find step-by-
step configuration for different Windows systems below.

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Windows Vista
Note: Network configuration require administrator privileges. When User Account Control
window pops up, either click Continue (Administrator user) or select Administrator user and
enter valid password (Standard user).
1. Click Start →Control Panel.
2. Click View network status and tasks.
3. Click View status for appropriate
connection.
4. On General tab, Click the Properties
button.
5. On Networking tab, select Internet
Protocol Version 4 (TCP/IPv4) and click
Properties.

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6. On General tab, select Obtain an IP
address automatically and Obtain DNS
server address automatically.
7. Click OK to save settings and close
Internet Protocol Version 4 (TCP/IPv4)
Properties window.
Note: In some cases Windows Vista cannot obtain an IP address from certain router’s DHCP
server. If you encounter this, follow this steps to resolve this problem (Microsoft Support page)
http://support.microsoft.com/kb/928233/en-us

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Windows 2000/XP
1. Click Start →Settings →Control Panel.
Double-click the Network Connections icon
(2000/XP Classic view) or click Network and
Internet Connections icon and then Network
Connections icon (XP Default view).
2. Double-click the Local Area Connection icon.
3. On General tab, Click the Properties button.
4. On General tab, select Internet Protocol
(TCP/IP) and click Properties.
5. On General tab, select Obtain an IP address
automatically and DNS server address
automatically.
6. Click OK to save settings and close Internet
Protocol (TCP/IP) Properties window.

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Windows 95/98/Me
1. Click Start →Settings →Control Panel.
Double-click the Network icon.
2. On Configuration tab, select TCP/IP for
appropriate network adapter and click
Properties.
3. On IP Address tab, select Obtain an IP
address automatically.
4. On DNS Configuration tab, select Disable
DNS
5. Click OK to save settings and close TCP/IP
Properties window.
To make sure that network adapter properly obtained an IP address from router’s DHCP
server:
1. click Start > Run
2. type cmd (Win 2000/XP) or command (Win 95/98/ME) and press Enter
3. in command line type ipconfig /all and press Enter
4. check if the IP Address is 192.168.1.x

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Configure router via web browser
Cerberus P 6381-3 router can be configured via web browser, which is usually integrated with
operating system. Router offers clear and simple interface.
Login
1. Launch the Web browser
2. In address bar enter the default IP address: http://192.168.1.100
3. Enter username and password – default admin / pentagram

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Navigation
Settings are grouped in six main categories:
•Wireless: Configure your wireless connection, security, and other advanced parameters.
•LAN: Configure LAN, DHCP, and Route settings.
•WAN: Configure the Internet connection, QoS, and Server settings.
•Firewall: Configure the firewall and filter mechanisms to protect your network.
•Administration: Configure the system and upgrade the firmware of Wireless Router.
•System Log: Monitor the status and various system logs.
Click on group name to expand it, and then on menu you wish to access. Clicking at any time
on the Logout item will log you out of the configuration page.

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Wireless / General Tab
This page allows user to configure basic wireless settings.
SSID: Assign an identification string of up to 32 characters for your wireless connection.
Hide SSID: If YES is selected, your SSID does not show in site surveys by wireless mobile
clients and they can only connect to your Wireless Router with your SSID of AP.
Country Code: The available channel differs from different countries. For example: United
States is channel 1-11, European Union is channel 1-13.
Channel: The radio channel for wireless connection operation.
Wireless Mode: This field indicates the 802.11g interface mode. Select Auto to allow the
connection to the Wireless Router of 802.11g and 802.11b wireless mobile clients. Select 54g
Protection to enable G-Mode protection for 802.11g traffic automatically in the presence of
11b traffic.
Authentication Method: This field enables the authentication methods for wireless clients.
WPA Encryption: Enable WPA Encryption to encrypt data.
WPA Pre-Shared Key: This field requires a password of 8 to 63 characters to start the
encryption process. If you leave this field blank, the default 00000000 will be assigned as your
password.
WEP Encryption: Enable WEP Encryption to encrypt data.
Key Index: Set the WEP key to transmit data on your wireless.
WEP Key 1~4: Only valid when using WEP encryption algorithm. The key must match with the
AP’s Key.
Passphrase: Select WEP-64bits or WEP-128bits in WEP encryption field to generate four
WEP keys automatically.

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Network Key Rotation Interval: This field specifies the interval (in seconds) after which a
WPA group key is changed. Enter 0(zero) to indicate that a periodic key-change is not
required.
Wireless / WPS Tab
WPS (Wi-Fi Protected Setup) provides easy and secure establishment of a wireless network.
You can configured WPS here via the by PIN code method.
Enable WPS: Allowing Wi-Fi Protected Setup (WPS) to simplify the process of connecting any
device to the wireless network. WPS support the authentication of Open system, Share key,
WPA-Personal, WPA2-Personal. Not support WPA-Enterprise, WPA2-Enterprise and Radius.
AP PIN Code: Remember the PIN code of AP (the same as PIN code in the bottom of
Wireless Router). Input this PIN code in client's WPS utility and utility will configure the
wireless security setting of Wireless Router.
Client PIN Code: Key in an eight-digit number for the PIN code.
Wireless / Wireless MAC Filter Tab
Wireless MAC filter allows you to control packets from devices with specified MAC address in
your Wireless LAN.
MAC Filter Mode: In Accept mode, Wireless Router only accepts clients with MAC address in
the list. In Reject mode, Wireless Router will reject clients with MAC address in the list.
MAC Address: Enter the complete MAC address which contains 12 hexadecimal letters.

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Wireless / Professional Tab
Wireless Professional Setting allows you to set up additional parameters for wireless. But
default values are recommended.
Enable Radio?: Select Yes to enable Radio function.
Date to Enable Radio: This field defines the dates that wireless function is enabled.
Time of Day to Enable Radio: This field defines the time interval that wireless function is
enabled.
Data Rate (Mbps): This field allows you to select the transmission rate. Auto is recommended
to maximize performance.
Fragmentation Threshold: Fragmentation Threshold sets the frame size of incoming
messages (ranging from 256 to 2346 bytes) used as fragmentation boundary. If the frame size
is too big, the heavy interference affects transmission reliability. If the frame size is too small, it
decreases transmission efficiency.
RTS Threshold: Lower the signal RTS (Request To Send) to promote the transmission
efficiency in condition of noisy environment or too many clients.
DTIM Interval: DTIM (Delivery Traffic Indication Message) is included in Beacon packet. The
DTIM Interval (1-255) means the period of time to wake up wireless clients from Sleep Mode.
The default value is 1.
Beacon Interval: Beacon Interval means the period of time between one beacon and the next
one. The default value is 100 (the unit is millisecond, or 1/1000 second). Lower the Beacon
Interval to improve transmission performance in unstable environment or for roaming clients,
but it will be power consuming.

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LAN / LAN IP Tab
Configure the LAN IP of Wireless Router. The DHCP Server dynamically changes the IP pool
when you change the LAN IP.
IP Address: The LAN IP address of Wireless Router. The Default value is 192.168.1.100.
Subnet Mask: The LAN subnet mask of Wireless Router. The Default value is
255.255.255.0
LAN / DHCP Server Tab
Wireless Router supports up to 253 IP address for your local network. The IP address of a
local machine can be is assigned manually by the network administrator or obtained
automatically from Wireless Router if the DHCP server is enabled.
Enable the DHCP Server?: DHCP server administers and assigns IP addresses for LAN
clients automatically.

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Wireless Router's Domain Name: The Domain Name for client who requests IP address
from the DHCP server.
IP Pool Starting Address: The first address in the pool to be assigned by the DHCP server in
LAN.
IP Pool Ending Address: This field indicates the last address in the pool to be assigned by
the DHCP server in LAN.
Lease Time: The amount of connection time with the current dynamic IP address.
Default Gateway: This field indicates the IP address of gateway in your LAN.
DHCP's IP address: This field indicates the IP address of DNS to provide to clients that
request IP address from DHCP server.
WINS Server: The Windows Internet Naming Service manages interaction of each PC with
the Internet. If you use a WINS server, enter IP address of server here.
Enable Manual Assignment?: Enable this function to assign static IP address by manually.
MAC Address: Enter the MAC Address of each DHCP client.
IP Address: Assign an IP address for each DHCP client. The IP address should comply with
the DHCP address pool you specified. The DHCP address pool contains the range of the IP
address that will automatically be assigned to the clients on the network.
LAN / Route Tab
This function allows you to add routing rules into Wireless Router. It is useful if you connect
several routers behind Wireless Router to share the same connection to the Internet.
Network/Host IP: It stands for the destination network or host of a route rule. So it could be a
host address, such as 192.168.123.11 or a network address, such as 192.168.0.0.
Netmask: It indicates how many bits are for network ID and subnet ID. For example: if the
dotted-decimal netmask is 255.255.255.0, then it’s netmask bits is 24. If the destination is a
host, its netmask bits should be 32.
Gateway: It stands for the IP address of gateway where packets are routed to. The specified
gateway must be reachable first. It means you have to set up a static route to the gateway
beforehand.
Metric: Metric is a value of distance for the network
Interface: Network interface that the route rule applies to.
LAN / UPNP Tab
This tab allows you to enable or disable UPnP function of the router.

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WAN / Internet Connection Tab
Wireless Router supports several connection types to WAN. These types are selected from
the dropdown menu beside WAN Connection Type. The setting fields differ depending on the
connection type you selected.
WAN Connection Type: Wireless Router supports 5 methods of obtaining the WAN IP
Address:
•Automatic IP (DHCP): Automatic gets IP address from your ISP.
•PPPoE: PPPoE is a common connection type used for xDSL.
•PPTP: PPP Tunneling Protocol can support multi-protocol Virtual Private Network (VPN).
•L2TP: Layer 2 Tunneling Protocol can support multi-protocol Virtual Private Networks
(VPN)
•Static IP (fixed IP): Use static IP address to access Network.
Get the WAN IP automatically?: This field allows you to get the WAN IP address
automatically.
IP Address: This is the IP address of Wireless Router as seen on the remote network. If you
set it to 0.0.0.0, Wireless Router will get IP address from DHCP Server automatically.
Subnet Mask: This is the Subnet Mask of Wireless Router as seen on the remote network.