Asus Router RX3141 User Manual

RX3141 User’s Manual  Chapter 7. Configuring Static Routes 
 41 
 
7.2.2  Adding Static Routes 
 
Figure 7.2.  Static Route Configuration 
Follow these instructions to add a static route to the routing table. 
1.  Open the Static Route configuration page by double clicking the 
Advanced Î Static Route 
menu. 
2.  Enter static routes information such as destination IP address, destination subnet mask, gateway 
IP address and the interface in the corresponding fields. 
For a description of these fields,...

Chapter 7. Configuring Static Routes  RX3141 User’s Manual 
42 
 
7.2.3  Deleting Static Routes 
 
Figure 7.3.  Sample Routing Table 
Follow these instructions to delete a static route from the routing table. 
1.  Open the Static Route configuration page by double clicking the 
Advanced Î Static Route 
menu. 
2.  Click on the 
 icon of the route to be deleted in the Routing Table. 
 WARNING 
Do not remove the route for default gateway unless you know 
what you are doing. Removing the default route will...

RX3141 User’s Manual Chapter 8. Configuring DDNS 
 43 
8 Configuring DDNS 
Dynamic DNS is a service that allows computers to use the same domain name, even when the IP address 
changes from time to time (during reboot or when the ISPs DHCP server resets IP leases). RX3141 connects 
to a Dynamic DNS service provider whenever the WAN IP address changes. It supports setting up the web 
services such as Web server, FTP server using a domain name instead of the IP address. Dynamic DNS 
supports the DDNS...

Chapter 8. Configuring DDNS RX3141 User’s Manual 
44 
8.1  DDNS Configuration Parameters 
Table 8.1 describes the configuration parameters available for DDNS service. 
Table 8.1. DDNS Configuration Parameters 
Field Description 
Status 
Shows the state of DDNS. 
Dynamic DNS 
Enable  Click on this radio button to enable the DDNS Service 
Disable  Click on this radio button to disable the DDNS Service 
Domain Name 
Enter the registered domain name provided by your ISP into this field. For example, If the...

RX3141 User’s Manual Chapter 8. Configuring DDNS 
 45 
 
8.2  Configuring HTTP DDNS Client 
 
Figure 8.2. HTTP DDNS Configuration Page 
Follow these instructions to configure the HTTP DDNS: 
1.  First, you should have already registered a domain name to the DDNS service provider. If you 
have not done so, please visit www.dyndns.org
 for more details. 
2.  Log into the Configuration Manager, and then click 
Advanced Î DDNS Service menu to open 
the DDNS Configuration page. 
3.  In the DDNS Configuration...

RX3141 User’s Manual  Chapter 9. Configuring Firewall/NAT Settings 
 47 
9 Configuring Firewall/NAT Settings 
The RX3141 provides built-in firewall/NAT functions, enabling you to protect the system against denial of 
service (DoS) attacks and other types of malicious accesses to your LAN while providing Internet access 
sharing at the same time. You can also specify how to monitor attempted attacks, and unwanted network 
access. 
This chapter describes how to configure router security settings, and...

Chapter 9. Configuring Firewall/NAT Settings  RX3141 User’s Manual 
48 
the packet is dropped; otherwise, the packet is either dropped or forwarded based on the action defined in the 
matched ACL rule. 
9.1.3.2  ACL Rule and Connection State Tracking 
The stateful packet inspection engine in the firewall keeps track of the state, or progress, of a network 
connection. By storing information about each connection in a state table, RX3141 is able to quickly determine 
if a packet passing through the...

RX3141 User’s Manual  Chapter 9. Configuring Firewall/NAT Settings 
 49 
 
9.2  Router Security Settings 
9.2.1  Basic Router Security Configuration Parameters 
Table 9.1 describes the configuration parameters available for basic router security configuration. 
Table 9.1. Basic Router Security Configuration Parameters
 
Field Description 
Firewall Check or uncheck this box to enable or disable firewall. 
NAT Check or uncheck this box to enable or disable NAT. 
Log Port Probing Connection attempt to...

Chapter 9. Configuring Firewall/NAT Settings  RX3141 User’s Manual 
50 
 
9.2.2.1  DoS Protection Configuration Parameters 
Table 9.2 provides explanation for each type of DoS attacks. You may check or uncheck the check box to 
enable or disable the protection or detection for each type DoS attacks. 
Table 9.2. DoS Attack Definition
 
Field Description 
IP Source 
Route Intruder uses source routing in order to break into the target system. 
IP Spoofing Spoofing is the creation of TCP/IP packets using...