User manual ASUS VE205T

[. . . ] 3 2. 3. 2 Firewall Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 3. 2. 1 Stateful Packet Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. 3. 2. 2 Packet Filtering ­ ACL (Access Control List) . . . . . . 4 2. 3. 2. 3 Defense against DoS Attacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The algorithm used for the load balancing is weighted round robin. Line Backup: select this option if line backup is needed. In the existing implementation, the primary link is always set to WAN1 and the backup link is always set to WAN2. Enter the ratio of the traffic amount that you want to distribute between the WANs. For example, 80% for WAN1 and 20% for WAN2 means 80% of the traffic is directed to WAN1 and 20% of the traffic is directed to WAN2. Click Enable or Disable radio button to enable or disable this feature. Connectivity check is used to monitor the link status for the WAN ports. If this option is disabled, VE205T will not perform fail-over; this means that if one of the WAN links is down, the traffic directed to the downed link will not be re-directed to the active link. It is recommended that you keep this option enabled. However, if the gateway or the specific network device that will be checked for connectivity does not respond to ping, you WAN1/WAN2 Bandwidth Connectivity Check 42 VE205T User's Manual DHCP Server Configuration Setting Description Connectivity will need to disable this feature. Otherwise, VE205T will Check (Cont. ) make incorrect judgment regarding the WAN link status and thus affect the behavior of the load balancing or line back up. If you chose to have the information assigned dynamically, then you configured your PCs as DHCP clients that will accept IP addresses assigned from a DCHP server such as the VE205T. The DHCP server draws from a defined pool of IP addresses and "leases" them for a specified amount of time to your computers when they request an Internet session. It monitors, collects, and redistributes the addresses as needed. On a DHCP-enabled network, the IP information is assigned dynamically rather than statically. A DHCP client can be assigned a different address from the pool each time it reconnects to the network. 6. 1. 2 Why use DHCP? DHCP allows you to manage and distribute IP addresses throughout your network from the VE205T. Without DHCP, you would have to configure each computer separately with IP address and related information. DHCP is commonly used with large networks and those that are frequently expanded or otherwise updated. 45 DHCP Server Configuration VE205T User's Manual 6. 1. 3 Configuring DHCP Server Note: By default, the VE205T is configured as a DHCP server on the LAN side, with a predefined IP address pool of 192. 168. 1. 100 through 192. 168. 1. 149 (subnet mask 255. 255. 255. 0). To change this range of addresses, follow the procedures described in this section. First, you must configure your PCs to accept DHCP information assigned by a DHCP server: 1. Open the DHCP Server Configuration page, shown in Figure 6. 1, by clicking Advanced -> DHCP Server menu. Figure 6. 1. Enter the information for the IP Address Pool (Begin/End Address), Subnet Mask, Lease Time and Default Gateway IP Address, fields; others, such as Primary/Secondary DNS Server IP Address and Primary/Secondary WINS Server IP Address are optional. However, it is recommended that you enter the primary DNS server IP address in the space provided. You may enter the LAN IP or your ISPs DNS IP in the primary DNS Server IP Address field. [. . . ] Support for Java® may also be required. Verify that the PCs IP address is defined as being on the same subnet as the IP address assigned to the LAN port on the VE205T. PCs cannot display web pages on the Internet. Configuration Manager Program You forgot/lost your Configuration Manager user ID or password. Cannot access the Configuration Manager program from your browser. Changes to Configuration Manager are not being retained. 110 Be sure to click on "Apply" button to save any changes. VE205T User's Manual Troubleshooting 12. 1 Diagnosing Problem using IP Utilities 12. 1. 1 ping Ping is a command you can use to check whether your PC can recognize other computers on your network and the Internet. A ping command sends a message to the computer you specify. If the computer receives the message, it sends messages in reply. [. . . ]