User manual TOP GLOBAL MB6800

[. . . ] ----MB6800 User Guide MobileBridge Gateway Series MB6800 Wireless Cellular Data Gateway User Guide Version 1. 1. 1 Firmware v1. 1. 1 2007-3-8 Top Global USA, any modification of this product will not issue a separate notice. All Rights Reserved. -1- Top Global USA. ----MB6800 User Guide Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. [. . . ] ----MB6800 User Guide 3. 4. 4 Firewall There are four main categories in this setting: MAC Filter Access rules Port forwarding Services 3. 4. 4. 1 MAC Filter Figure 3-33 MAC Filter - 48 - Top Global USA. ----MB6800 User Guide Function Summary The MAC address is a unique value associated with a network adapter. MAC addresses are also known as hardware addresses or physical addresses. They uniquely identify an adapter on a LAN. MAC addresses are 12-digit hexadecimal numbers (48 bits in length). MAC Filter can control the hosts in LAN to allow or deny their Internet access based on their MAC addresses. Detailed Configurations MAC Filter Mode: Disable means no MAC Filter is implemented Allow means only the hosts with the MAC address in the list can access the Internet. Deny means only the hosts with the MAC address in the list can't access the Internet. ARP Cache: MB6800 collects the MAC address information of all the hosts that communicated with MB6800 and displays the information here. You can easily add the MAC addresses you select to the MAC Filter List by click the Add button. You can refresh the ARP cache by click the Refresh button. Access Control List: This is the MAC address list of all the selected hosts. You can add items with two methods: Select from the ARP Cache or type the MAC address manually in the MAC address edit box on the lower right hand side. Note: Both MAC Filter and Wireless LAN MAC Access Control List can realize the access control based on MAC addresses, but they are differentMAC filter controls the access to the Internet however Wireless LAN Access Control List controls the access to the MB6800 via Wireless LAN. - 49 - Top Global USA. ----MB6800 User Guide 3. 4. 4. 2 Access rules Figure 3-34 Access Rules Function Summary Access Rules is one of the most important functions of MB6800's firewall. Access Rules utilize stateful package filter technology. All the access rules in firewall are set here. Detailed Configurations The access rules of the firewall in MB6800 have many access rule items. You can maintain these rules with the operations of: Add, Delete, Move up, Move down, Apply. Default Policy: Factory default rules; Enable Checkbox: You can enable or disable a rule by checking or unchecking this checkbox; Move up, Move down: The sequence of the rules in the list is very important for the firewall. When the firewall deals with a data packet, it will check the rules from top to bottom sequentially and execute the first rule which matches the character of this packet. So please pay attention to the sequence when you are using multiple rules; Apply Change: Click the Apply Change button to validate the change immediately. No reboot is required here; Add: Click the Add button, a pop-up window for inputting an access rule will appear: - 50 - Top Global USA. ----MB6800 User Guide Figure 3-35 Access Rules Each rule consists of the following parameters: Action: You have two options here: Block or Pass. Block means the data packet which matches this rule will be blocked by firewall; Pass means the data packet which matches this rule will be passed by firewall; Service: This parameter indicates the service type of this rule. [. . . ] The product supports the following IEEE 802. 11b functions: · CSMA/CA plus Acknowledge protocol · Multi-Channel Roaming · Automatic Rate Selection · RTS/CTS feature · Fragmentation · Power Management Will the information be intercepted while it is being transmitted through the air?WLAN features two-fold protection in security. On the hardware side, as with Direct Sequence Spread Spectrum technology, it has the inherent security feature of scrambling. On the software side, WLAN offers the encryption function (WEP or WPA) to enhance security and access control. - 77 - Top Global USA. [. . . ]