3Com Router WL-537 User Manual

							
LAN Settings65
3Enter your PPP over Ethernet user name in the  PPPoE User Name text box.
4 Enter a password in the  PPPoE Password text box.
5 Enter your PPP over Ethernet service name in the  PPPoE Service Name text 
box. Not all ISPs require a PPPoE service name. Only enter a service name 
if your ISP requires this.
6 Enter the  MTU value supplied by your ISP. If you  do not know this, leave it 
at the default value. The default is 1454.
7 Select an idle time from the  Maximum Idle Time drop-down list.
This value will correspond to the amount of idle time (no Internet activity) 
that will pass before the Router automatically ends your PPP over 
Ethernet session.
Since the Router contains its own  PPPoE client, you no longer need to run 
PPPoE client software on your  computer to access the Internet.
PPTP PPTP Setup Screen 
						

							
66CHAPTER 5: ROUTER CONFIGURATION
To setup the Router for use with a PPTP connection, use the following 
procedure:
1 Select  PPTP (used by some European providers)  in the IP Allocation Mode
field. 
2 Enter your PPTP server address in the  PPTP Server Address text box (this is 
typically the address of your modem).
3 Enter your PPTP user name in the  PPTP User Name text box.
4 Enter your password in the  PPTP Password text box.
5 Enter the  MTU value supplied by your ISP. If you do not know this, leave it 
at the default value. The default is 1460.
6 Select an idle time from the  Maximum Idle Time drop-down list.
This value will correspond to the amount of idle time (no Internet activity) 
that will pass before the Router au tomatically ends your PPTP session.
7 IP settings must be used when establishing  a PPTP connection. To obtain 
an IP address
■Fill in the  Initial IP Address, Initial Subnet Mask  fields if your ISP has 
provided you with these settings.
Check all of your settings, and then click Save. 
						

							
LAN Settings67
Heart Beat Signal
Check with your ISP to make su re they support Heart Beat Signal.
To set up the Router for use with a  Heart Beat Signal connection, use the 
following procedure:
1 Select  Heart Beat Signal (For  Australia only) in the IP Allocation Mode
field.
2 Enter the  Host Name (optional).
Some ISPs require a host name. If your ISP has this requirement, enter the 
host name in the  Host Name text box.
3 Enter your Heart Beat  Signal user name in the  Heart Beat Signal User 
Name  text box.
4 Enter your  Heart Beat Signal password  in the Heart Beat Signal Password 
text box.
5 Enter the  MTU value supplied by your ISP. If you  do not know this, leave it 
at the default value. The default is 1440.
6 Select an idle time from the  Maximum Idle Time drop-down list. 
This value will correspond to the amount  of idle time(no Internet activity)!
that will pass before the Router automa tically ends your PPTP session.
Check all of your settings, and then click  Save. 
						

							
68CHAPTER 5: ROUTER CONFIGURATION
FirewallOn the main frame of the  Firewall setup screen is a menu with six tabs: 
Virtual Servers ,Special Applications ,PCs Privileges ,URL Filter ,Content 
Filter  and  SPI.
Virtual Servers Selecting the Firewall option on the main menu  displays the Virtual 
Servers setup screen. 
Virtual Servers Screen
DMZ (De-Militarized Zone) Host is a  computer without the protection of 
the firewall. This feature allows a single computer to be exposed to 
unrestricted 2-way communication from outside of your network. This 
feature should be used only if  the Virtual Server or Special Applications 
options do not provide the level of access needed for certain applications.
To configure one of your computers as a DMZ host, enter the last digit(s) 
of the IP address of the computer in the  IP Address of DMZ Host text box, 
and then click  Save.
Virtual DMZ 
						

							
Firewall69
Virtual Server
Activating and configuring a virtual server allows one or more of the 
computers on your network to function as a public server. For example, 
one of your computers could be configur ed as an FTP server, allowing 
others outside of your office network  to download files of your choosing. 
Or, if you have created a We b site, you can configure one of your 
computers as a Web server, so that others can view your Web site.
If you want to host ftp server or  online gaming, you must open up ports 
on the router. This page allows you  to setup port forwarding for the 
specified applications.
Before using forwarding, you should assian static IP addresses to the 
designated PCs.
Click Save to save the settings. 
						

							
70CHAPTER 5: ROUTER CONFIGURATION
Special Applications Special Applications Screen
Select Special Apps  tab to display  Authorized Application  setup screen. 
Some software applications require special or multiple connections to the 
Internet and these would normally be blocked by the firewall. For 
example Internet Telephony or Video conferences require multiple 
connections.
So that these special applications can work properly and are not blocked, 
the firewall needs to be told about  them. In each instance there will be a 
trigger port and incoming port(s), where traffic on the trigger port tells 
the firewall to open the incoming ports.
Each defined Special App lication only supports a single computer user, 
and up to 10 Special Applications can  be defined. Any incoming ports 
opened by a Special Application trigger will be closed after five minutes 
of inactivity.
Special Application  allows the router to keep track of outgoing data for 
specific port numbers. The router remembers which computer sends out 
what data, so when the requested da ta returns through the router, the 
data is sent back to the proper  computer by way of IP address and port 
mapping rules.
Click  Save  to save the setting. 
						

							
Firewall71
Only one computer on your net work can use the special application at 
any one time.
SPI Select Firewall from the main menu, then select the SPI to display the 
SPI screen. !SPI Screen
Check the  Enable SPI and Anti-Dos  Firewall protection check box to 
enable SPI. !When this feature is enabled, all incoming packets will be 
blocked except for those types that you  allow in the Stateful Packet 
Inspection section.
Web Filters :You can select to filter Proxy, Java, ActiveX, and/or Cookies.
Click  Save to save the setting. 
						

							
72CHAPTER 5: ROUTER CONFIGURATION
QOS
QoS(Quality of Service)  manages information as it is transmitted and 
received. It ensures better service  to those application with a higher 
priority.
Click  Save  to save the setting.
Internet Access Policy 
You can setup policies that deny or allow specific clients to access the 
Internet.
Enter Policy Name ;!Enter a name for the ploicy. 
						

							
Firewall73
Status:Choose to enable or disable the selected policy.
PCs :Click on the  Edit List button to specify the network clients. Policy 
only applies to the PCs that are in the list.
You can specify each client by its  MAC Addressor IP Address. You can also 
specify a group of clients by enter ing their IP Address Range. Once you 
have specified all the clients, click  Save.
Access Restrictions : Select to Deny or Allow  the specified clients to 
access the Internet by  Day and  Time .
Blocked Application Port
Select which application port to block, if  any, when the specified PCs 
have Internet access.
For your convenience, 11 preset applications  and their ports are listed. If 
you have a Custom application, select  Custom and manually enter its 
port number. 
						

							
74CHAPTER 5: ROUTER CONFIGURATION
Website Blocking
You can block the specified clients from accessing certain websites by URL 
or Keyword.
Enter the URL or the Keyword you wish to block.
Click Save to save the setting.
To view all the policies, click the  Summary button.