Getnet Router GR-154 User Manual

							
(e) L2TP 
Layer 2 Tunneling protocol can support multi-protocol Virtual. 
 
L2TP Mode: The Layer two Tunneling Protocol (L2TP) is a method for implementing virtual private network. 
Server: Specify IP Address of the L2TP Server. 
 
(f) BigPond 
BigPond is an Australian internet service provider and is a subsidiary of Telstra.  
						

							
 
User Name: Enter the User Name is provided by your ISP. This field is case-sensitive. 
Password: Enter the Password is provided by your ISP. This field is case-sensitive. 
Server IP: Enter the authenticating server IP address or host name. 
MTU: The normal MTU (Maximum Transmit Unit) value for most Ethernet networks is 1500 bytes. For some ISPs, you 
may need to modify the MTU. But this is rarely required, and should not be done unless you are sure it is necessary for 
your ISP connection. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
						

							
3.5 LAN 
3.5.1 LAN Settings 
Configure the gateway address of the Broadband Router. To dynamically assign the IP address for client PCs, enable 
the DHCP Server, set the lease time, and then specify the address range.  
Valid IP addresses consist of four numbers, and are separated by periods. The first three fields are the network portion, 
and can be from 0-255, while the last field is the host portion and can be from 1-254. 
 
IP address: This is the router’s LAN port IP address (Your LAN clients default gateway IP address) 
Subnet Mask: Specify a Subnet Mask for your LAN segment. 
The Gateway acts as DHCP Server: You can enable or disable the DHCP server. 
IP Pool Starting Address: Enter the first address that should be assigned by the DHCP server. 
IP Pool Ending Address: Enter the last address that should be assigned by the DHCP server. 
Lease Time: Enter the number of hours that a client can use the assigned IP address. 
DNS Proxy: To enable or disable DNS Proxy (Domain Name Service). 
 
3.5.2 DHCP Client List 
The DHCP client list allows you to see which clients are connected to the Broadband Router via IP address, host name, 
and MAC address. You can select static to fix it.  
						

							
 
DHCP Client List: This page shows all DHCP clients (LAN PCs) currently connected to your network. The “DHCP 
Client List” displays the IP address and the MAC address and Remaining Time of each LAN Client. Use the Refresh 
button to get the most updated situation 
 
 
3.6 NAT 
3.6.1 Virtual Server 
If you configure the Broadband Router as a virtual server, remote users accessing services such as Web or FTP at 
your local site via public IP addresses can be automatically redirected to local servers configured with private IP 
address. In other words, depending on the requested service (TCP/UDP port number), the Broadband Router redirects 
the external service request to the appropriate server.  
						

							
 
Enabled: Enable the Virtual Server option. 
Private IP: This is the LAN client/host IP address that the Public Port number packet will be sent to. 
Private Port: This is the port number (of the above Private IP host) that the below Public Port number will be changed 
to when the packet enters your LAN (to the LAN Server/Client IP) 
Type: Select the port number protocol type (TCP, UDP or both). If you are unsure, then leave it to the default both 
protocols. 
Public Port: Enter the service (service/Internet application) port number from the Internet that will be re-directed to the 
above Private IP address host in your LAN. 
Comment: The description of this setting. 
 
3.6.2 Port Triggering 
Some applications require multiple connections, such as Internet gaming, video conferencing, Internet telephony and 
others. These applications cannot work when Network Address Translation (NAT) is enabled. If you need to run 
applications that require multiple connections,-specify the port normally associated with an application in the Trigger 
Port field, select the protocol type as TCP or UDP, then enter the public ports associated with the trigger port to open 
them for inbound traffic.  
						

							
 
Enable: Enable the Port Triggering function. 
Trigger Port: This is the out going (Outbound) range of port numbers for this particular application. 
Trigger Type: Select whether the outbound port protocol is “TCP”, “UDP” or “Both”. 
Public Port: Enter the In-coming (Inbound) port or port range for this type of 
applications(e.g. 2300-2400, 47624). 
Type: Select the Inbound port protocol type: “TCP”, “UDP” or “Both”. 
Comment: The description of this setting. 
 
3.6.3 Port Mapping 
This functionality allows one or more public IP addresses to be shared by multiple internal users. Enter the Public IP 
address you wish to share into the Global IP field. Enter a range of internal IP that will share the global IP.  
						

							
 
Enabled: Enable the Port Mapping function. 
Comment: The description of this setting. 
Server IP: Enter the NAT server IP address. 
Mapping Ports: Enter the port address NAT server maps to. 
Type: Select the Inbound port protocol type: “TCP”, “UDP” or “Both”. 
 
3.6.4 Passthrough 
Allow the broadband router correctly pass though the NAT gateway.   
						

							
 
[VPN] 
PPTP Passthrough: PPTP is a protocol that allows corporations to extend their own corporate network through private 
“tunnels” over the public Internet. Enable/Disable this protocol verification. 
IPSec Passthrough: IPSec is a framework for a set of protocols for security at the network or packet processing layer 
of network verification. 
L2TP Passthrough: L2TP is an extension to the Point-to-Point Protocol, which is an important component for VPNs. 
VPNs allow users and telecommuters to connect to their corporate intranets or extranets. 
[FTP] 
Non-Standard FTP Port (0-65535): If the FTP Server is using a non-Standard FTP port number, this can prevent FTP 
data connections from being established. 
 
3.6.5 DMZ 
If you have a client PC that cannot run Internet application properly from behind the NAT firewall or after configuring the 
Special Applications function, then you can open the client up to unrestricted two-way Internet access. 
Enter the IP address of a DMZ host to this screen. Adding a client to the DMZ (Demilitarized Zone) may expose your 
local network to a variety of security risks, so only use this option as a last resort.  
						

							
 
Enable: Enable/disable DMZ. (Default: Disable) 
Public IP Address: The IP address of the WAN port or any other Public IP addresses given to you by your ISP. 
IP Address of Virtual DMZ Host: Enter the DMZ host IP address. 
 
 
3.7 Firewall 
3.7.1 Firewall Options 
The Broadband Router provides extensive firewall protection by restricting connection parameters to limit the risk of 
intrusion and defending against a wide array of common hacker attacks. However, for applications that require 
unrestricted access to the Internet, you can configure a specific client/server as a demilitarized zone (DMZ).  
						

							
 
 
3.7.2 Client Filtering 
You can filter Internet access for local clients based on IP addresses, application types, (i.e., HTTP port), and time of 
day. For example, this screen shows that clients in the address range 192.168.2.50-99 are permanently restricted from 
using FTP (Port 21), while clients in the address range 192.168.2.110-119 are blocked from browsing the Internet from 
Monday through Friday.