User manual ZYXEL NBG-334W

[. . . ] NBG334W 802. 11g Wireless Firewall Router User's Guide Version 3. 60 10/2007 Edition 2 DEFAULT LOGIN IP Address http://192. 168. 1. 1 User Name admin Password 1234 www. zyxel. com About This User's Guide About This User's Guide Intended Audience This manual is intended for people who want to configure the NBG334W using the web configurator. You should have at least a basic knowledge of TCP/IP networking concepts and topology. Related Documentation · Quick Start Guide The Quick Start Guide is designed to help you get up and running right away. It contains information on setting up your network and configuring for Internet access. [. . . ] If your ISP gives you explicit DNS server address(es), read the embedded web configurator help regarding what fields need to be configured. NBG334W User's Guide 111 Chapter 8 LAN 8. 2. 2 IP Address and Subnet Mask Refer to the IP address and subnet mask section in the Connection Wizard chapter for this information. 8. 2. 3 Multicast Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1 recipient) or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to a group of hosts on the network - not everybody and not just 1. IGMP (Internet Group Management Protocol) is a network-layer protocol used to establish membership in a Multicast group - it is not used to carry user data. IGMP version 2 (RFC 2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would like to read more detailed information about interoperability between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236. The class D IP address is used to identify host groups and can be in the range 224. 0. 0. 0 to 239. 255. 255. 255. The address 224. 0. 0. 0 is not assigned to any group and is used by IP multicast computers. The address 224. 0. 0. 1 is used for query messages and is assigned to the permanent group of all IP hosts (including gateways). All hosts must join the 224. 0. 0. 1 group in order to participate in IGMP. The address 224. 0. 0. 2 is assigned to the multicast routers group. The NBG334W supports both IGMP version 1 (IGMP-v1) and IGMP version 2 (IGMP-v2). At start up, the NBG334W queries all directly connected networks to gather group membership. After that, the NBG334W periodically updates this information. IP multicasting can be enabled/disabled on the NBG334W LAN and/or WAN interfaces in the web configurator (LAN; WAN). Select None to disable IP multicasting on these interfaces. 8. 2. 4 Any IP Traditionally, you must set the IP addresses and the subnet masks of a computer and the NBG334W to be in the same subnet to allow the computer to access the Internet (through the NBG334W). In cases where your computer is required to use a static IP address in another network, you may need to manually configure the network settings of the computer every time you want to access the Internet via the NBG334W. With the Any IP feature and NAT enabled, the NBG334W allows a computer to access the Internet without changing the network settings (such as IP address and subnet mask) of the computer, when the IP addresses of the computer and the NBG334W are not in the same subnet. Whether a computer is set to use a dynamic or static (fixed) IP address, you can simply connect the computer to the NBG334W and access the Internet. The following figure depicts a scenario where a computer is set to use a static private IP address in the corporate environment. In a residential house where a NBG334W is installed, you can still use the computer to access the Internet without changing the network settings, even when the IP addresses of the computer and the NBG334W are not in the same subnet. 112 NBG334W User's Guide Chapter 8 LAN Figure 59 Any IP Example The Any IP feature does not apply to a computer using either a dynamic IP address or a static IP address that is in the same subnet as the NBG334W's IP address. You must enable NAT to use the Any IP feature on the NBG334W. Address Resolution Protocol (ARP) is a protocol for mapping an Internet Protocol address (IP address) to a physical machine address, also known as a Media Access Control or MAC address, on the local area network. IP routing table is defined on IP Ethernet devices (the NBG334W) to decide which hop to use, to help forward data along to its specified destination. The following lists out the steps taken, when a computer tries to access the Internet for the first time through the NBG334W. [. . . ] This warranty shall not apply if the product has been modified, misused, tampered with, damaged by an act of God, or subjected to abnormal working conditions. Note Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This warranty is in lieu of all other warranties, express or implied, including any implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for indirect or consequential damages of any kind to the purchaser. [. . . ]