D-Link DBG-2000 Product Manual 1 - Page 61

Secondary DNS server

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DBG-2000 User Guide Ending IP address Default gateway DNS server Primary DNS server Secondary DNS server WINS server (optional) Lease time (minutes) Relay gateway Captive portal Captive portal name DNS Proxy Save Close Enter the ending IP address. If DHCP mode is DHCP Server, enter the default gateway for the DHCP server mode. Select one of the following options for DNS servers for the DHCP clients: DNS Proxy: Enable or disable DNS Proxy on this VLAN. If enabled, the gateway acts as a proxy for all DNS requests and communicates with the ISP's DNS servers. DNS from ISP: This option sends all DNS requests to the ISP's DNS Servers. Static DNS: This option sends all DNS requests to the configured static DNS servers. Enter the primary DNS Server IP address. Enter the secondary DNS Server IP address. Enter the WINS IP address in the DHCP configuration. A WINS (Windows Internet Naming Service Server) is the equivalent of a DNS server but uses the NetBIOS protocol to resolve hostnames. It is an optional field. Enter the duration (in minutes) for which IP addresses will be leased to DHCP clients. Enter the relay gateway IP address. You can enable or disable the captive portal feature over the VLAN. Select the configured captive portal name from the drop-down list. When the DNS Proxy field is enabled, the gateway acts as a proxy for all DNS requests and communicates with the ISP's DNS servers. This field is available when you select DHC P Relay or None as the DHCP mode. Click Save to save your settings. Click Close to revert to the previous settings. IP management list The gateway's DHCP server can assign IP settings to your clients on your network by adding a client's MAC address and the IP address to the DHCP server's database. Whenever the gateway receives a request from a client, the MAC address of that client is compared with the MAC address list present in the database, and the corresponding IP address is assigned to the client. Another available security measure is to allow outbound traffic (from LAN to WAN) when the LAN node has an IP address matching the MAC address bound to it. This is IP/MAC Binding. By enforcing the gateway to validate the source traffic's IP address with the unique MAC Address of the configured LAN node, the administrator can ensure traffic from that IP address is not spoofed. If a violation (i.e., the traffic's source IP address does not match up with the expected source MAC address) occurs, the packets will be dropped. This section of VLAN displays the IP management list. The fields displayed in the IP management list table are as follows: Field Hostname Interface IP address MAC address Description It displays the hostname for the pair of IP and MAC addresses. It displays the interface to which the client is connected, and the DHCP lease is provided. It can include custom VLAN interface names. It displays the IP address you have assigned to the device. 61

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Ending IP address
Enter the ending IP address.
Default gateway
If
is
, enter the default gateway for the DHCP server mode.
DHCP mode
DHCP Server
DNS server
Select one of the following options for DNS servers for the DHCP clients:
DNS Proxy
: Enable or disable DNS Proxy on this VLAN. If enabled, the gateway acts
as a proxy for all DNS requests and communicates with the ISP’s DNS servers.
DNS from ISP
: This option sends all DNS requests to the ISP’s DNS Servers.
Static DNS:
This option sends all DNS requests to the configured static DNS servers.
Primary DNS server
Enter the primary DNS Server IP address.
Secondary DNS server
Enter the secondary DNS Server IP address.
WINS server (optional)
Enter the WINS IP address in the DHCP configuration. A WINS (Windows Internet Naming
Service Server) is the equivalent of a DNS server but uses the NetBIOS protocol to resolve
hostnames. It is an optional field.
Lease time (minutes)
Enter the duration (in minutes) for which IP addresses will be leased to DHCP clients.
Relay gateway
Enter the relay gateway IP address.
Captive portal
You can enable or disable the captive portal feature over the VLAN.
Captive portal name
Select the configured captive portal name from the drop-down list.
DNS Proxy
When the DNS Proxy field is enabled, the gateway acts as a proxy for all DNS requests
and communicates with the ISP’s DNS servers. This field is available when you select
DHC
or
as the DHCP mode.
P Relay
None
Save
Click
to save your settings.
Save
Close
Click
to revert to the previous settings.
Close
IP management list
The gateway’s DHCP server can assign IP settings to your clients on your network by adding a client’s MAC
address and the IP address to the DHCP server’s database. Whenever the gateway receives a request from a client, the MAC address of that
client is compared with the MAC address list present in the database, and the corresponding IP address is assigned to the client.
Another available security measure is to allow outbound traffic (from LAN to WAN) when the LAN node has an IP address matching the MAC
address bound to it. This is IP/MAC Binding. By enforcing the gateway to validate the source traffic’s IP address with the unique MAC Address of
the configured LAN node, the administrator can ensure traffic from that IP address is not spoofed. If a violation (i.e., the traffic’s source IP
address does not match up with the expected source MAC address) occurs, the packets will be dropped.
This section of VLAN displays the IP management list.
The fields displayed in the
table are as follows:
IP management list
Field
Description
Hostname
It displays the hostname for the pair of IP and MAC addresses.
Interface
It displays the interface to which the client is connected, and the DHCP lease is provided. It
can include custom VLAN interface names.
IP address
It displays the IP address you have assigned to the device.
MAC address
DBG-2000 User Guide
61