Chapter 6 LAN
SBG5500 Series User’s Guide
105
The following table describes the labels in this screen.
6.10 Technical Reference
This section provides some technical background information about the topics covered in this chapter.
6.10.1
LANs, WANs and the SBG
The actual physical connection determines whether the SBG ports are LAN or WAN ports. There are two
separate IP networks, one inside the LAN network and the other outside the WAN network as shown
next.
Figure 77
LAN and WAN IP Addresses
6.10.2 DHCP Setup
DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients to obtain
TCP/IP configuration at start-up from a server. You can configure the SBG as a DHCP server or disable it.
Table 35 Configuration > LAN / Home Network > DNS Forwarder
LABEL
DESCRIPTION
Domain Name
Enter the domain zone in this field. A domain zone is a fully qualified domain name
without the host. For example, *.zyxel.com.tw is a wildcard domain zone for the
www.zyxel.com.tw fully qualified domain name. For example, whenever the SBG
looks up a domain name that ends in zyxel.com.tw domain name, it can send a
query to the recorded name server IP address.
DNS Server
DNS Server From ISP
Select
DNS Server(s) from ISP
if your ISP dynamically assigns DNS server information.
You also need to select an interface through which the ISP provides the DNS server
IP address(es). The interface should be activated and set to be a DHCP client.
DNS Server
Select
DNS Server
if you have the IP address of a DNS server. Enter the DNS server's IP
address in the field to the right. Use the
Interface
field to select the interface through
which the SBG sends DNS queries to a DNS server.
OK
Click
OK
to save your customized settings and exit this screen.
Cancel
Click
Cancel
to exit this screen without saving.
SBG
Summary of Contents for SBG5500-A
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