Getnet Router GA-121A User Manual

GA-121A User Manual 
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Field Description 
access the Internet normally, you must add a 
route on the uplink equipment. Otherwise, the 
access to the Internet fails. Normally, it is 
required to enable NAPT. 
Enabel IGMP You can enable or disable IGMP function. 
PPP Settings  
User Name The correct user name that your ISP has 
provided to you. 
Password The correct password that your ISP has 
provided to you. 
Type You can choose Continuous, Connect on 
Demand , or Manual. 
Idle Time (min) 
If select...

GA-121A User Manual 
Field Description 
VC table. 
Modify 
Select a PVC in the current ATM VC table, 
then modify the parameters of this PVC. After 
finishing, click it to apply the change of this 
PVC. 
Current ATM  VC Table 
This table shows the existed PVCs. It shows 
the Interface name, channel mode, VPI/VCI, 
encapsulation mode, local IP address, 
remote IP address and other information. The 
maximum item of this table is eight. 
 
Click it, the PPP Interface-Modify  page 
appears. You can modify...

GA-121A User Manual 
30 
Field Description 
connection. 
ATM VCC The ATM virtual circuit connection assigned for 
this PPP interface (VPI/VCI). 
Login Name The login name provided by your ISP. 
Password The password provided by your ISP. 
Authentication MethodYou can choose  AUTO, CHAP , or PAP . 
Connection Type You can choose  Continuous, Connect on 
Demand , or Manual. 
Idle Time (s) If  choose  Connect on Demand, you need to 
enter the idle timeout time. Within the preset 
minutes, if the router...

GA-121A User Manual 
 
 
The following table describes the parameters and buttons of this page: 
Field Description 
VPI The virtual path identifier of the ATM PVC. 
VCI The virtual channel identifier of the ATM PVC. 
QoS The QoS category of the PVC. You can choose 
UBR , CBR , rt-VBR , or nrt-VBR . 
PCR The maximum rate at which cells can be 
transported along a connection in the ATM 
network. 
CDVT The amount of delay permitted between ATM 
cells (expressed in microseconds). 
SCR The maximum rate that...

GA-121A User Manual 
T1.413, ADSL2, ADSL2+ , AnnexL , and AnnexM . The router negotiates the 
modulation modes with the DSLAM. 
 
3.5   Service 
In the navigation bar, choose  Service. The  Service  page that is displayed 
contains  DNS, Firewall , UPNP, IGMP Proxy , TR069, and ACL. 
3.5.1   DNS 
Choose  Service > DNS . The DNS page that is displayed contains  DNS and 
DDNS . 
3.5.1.1 DNS 
Click DNS  in the left pane.  The page shown in the following figure appears. 
Domain name system (DNS) is an...

GA-121A User Manual 
 
 
The following table describes the parameters and buttons of this page: 
Field Description 
Attain DNS 
Automatically Select it, the router accepts the first received DNS 
assignment from one of the PPPoA, PPPoE or MER 
enabled PVC(s) during the connection establishment.
Set DNS 
Manually Select it, enter the primary and optional secondary 
DNS server IP addresses. 
Apply Changes Click it to save the settings of this page. 
Reset Selected Click it to refresh this page. 
 
3.5.1.2...

GA-121A User Manual 
 
 
The following table describes the parameters of this page: 
Field Description 
DDNS provider Choose the DDNS provider name. 
Hostname The DDNS identifier. 
Interface The WAN interface of the router. 
Enable Enable or disable DDNS function. 
Username The name provided by DDNS provider. 
Password The password provided by DDNS provider. 
Email The email provided by DDNS provider. 
Key The key provided by DDNS provider. 
 
3.5.2   Firewall 
Choose Service > Firewall . The Firewall...

GA-121A User Manual 
3.5.2.1 IPPort Filter 
Click IPPort Filter in the left pane. The page shown in the following figure 
appears. Entries in this table are used to restrict certain types of data packets 
through the gateway. These filters are helpful in securing or restricting your local 
network. 
 
 
Click  Apply Changes  to save the settings of this page. 
Click Add to add a new rule of the IP/Port filter. 
3.5.2.2 MAC Filter 
Click MAC Filter  in the left pane. The page shown in the following...

GA-121A User Manual 
 
 
Click Apply Changes  to save the settings of this page. 
Click Add to add a new rule of the MAC filter. 
3.5.2.3 URL Blocking 
Click URL Blocking  in the left pane. The page shown in the following figure 
appears. This page is used to block a fully qualified domain name (FQDN), such 
as tw.yahoo.comand and filtered keyword. You can add or delete FQDN and 
filtered keyword. 
 
 
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GA-121A User Manual 
The following table describes the parameters and buttons of this page: 
Field Description 
URL Blocking 
Capability You can choose Disable or Enable . 
  Choose Disabled  to turn off URL blocking and 
keyword filtering. 
  Choose Enable  to block access to the URLs and 
keywords specified in the  URL Blocking Table 
and  Keyword Filtering Table . 
Apply Changes Click it to save the settings of this page. 
Keyword The keyword to block. 
Add Keyword Click it to add the keyword to the...