D-Link DSR-250v2 Product Manual 1 - Page 48

Enter the primary DNS Server IP address., ISP's DNS servers.

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The fields available on this page are as follows: Field Interface type Interface name Bridge network Network IP address IP subnet mask DHCP mode Domain name Starting IP address Ending IP address Default gateway DNS server Primary DNS server Secondary DNS server (optional) Lease time (minutes) Relay gateway Allow ping from LAN DNS Proxy Jumbo frame Apply Cancel Description Select LAN to configure the port as the LAN port. Note: You can not edit this field for Port interface 1, 2, 3 and 5 interfaces. Port interface 5 can only be configured as a WAN port and Port interface 1, 2, 3 as a LAN port. Specify the name for your LAN interface. Enable this field to bridge this LAN to another VLAN. Select the network from the drop-down list. This field is available when you enable the Bridge network field. Enter a new IP address for the gateway. Enter the subnet mask for your network. Select one of the following modes: None - Select None to turns off DHCP. DHCP server - If this is selected, the gateway will act as the DHCP server on your network. By default, the "DHCP server" is selected as the DHCP mode. DHCP relay - If this is selected, DHCP clients on your network will receive IP address leases from a DHCP server on a different subnet. Enter a domain name for LAN configuration. Enter the starting IP address. 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. When the DNS Proxy field is selected, 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. It is an optional field. Enter the duration (in minutes) for which IP addresses will be leased to clients. Enter the relay gateway IP address. This field is available when you select DHCP mode as D HCP relay. If this option is disabled, the ping requests to the LAN interface are blocked. 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 DHCP relay or None as the DHCP mode. Jumbo frames are Ethernet frames with more than 1500 bytes of payload. When this feature is enabled, the LAN devices can exchange information at the Jumbo frames rate. Click apply to save your settings. Click Cancel to revert to the previous settings. DMZ Port The router supports one of the physical ports to be configured as a dedicated DMZ port. A DMZ is a sub-network that is open to the public but behind the firewall. The DMZ provides security to the network, as specific services/ports exposed to the Internet on the DMZ do not get exposed to the Intranet. Therefore, it is recommended that hosts exposed to the Internet (such as web or email servers) be placed in the DMZ network. Firewall rules can permit access to specific services/ports to the DMZ from LAN or WAN. In an attack on any of the DMZ nodes, the LAN is not necessarily vulnerable. DMZ configuration is identical to the LAN configuration. There are no restrictions on the IP address or subnet assigned to

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The fields available on this page are as follows:
Field
Description
Interface type
Select
to configure the port as the LAN port.
LAN
You can not edit this field for Port interface 1, 2, 3 and 5 interfaces. Port interface 5
Note:
can only be configured as a WAN port and Port interface 1, 2, 3 as a LAN port.
Interface name
Specify the name for your LAN interface.
Bridge network
Enable this field to bridge this LAN to another VLAN.
Network
Select the network from the drop-down list. This field is available when you enable the
Bridge
field.
network
IP address
Enter a new IP address for the gateway.
IP subnet mask
Enter the subnet mask for your network.
DHCP mode
Select one of the following modes:
None
- Select
to turns off DHCP.
None
DHCP server
- If this is selected, the gateway will act as the DHCP server on your
network. By default, the “DHCP server” is selected as the DHCP mode.
DHCP relay
- If this is selected, DHCP clients on your network will receive IP address
leases from a DHCP server on a different subnet.
Domain name
Enter a domain name for LAN configuration.
Starting IP address
Enter the starting IP address.
Ending IP address
Enter the ending IP address.
Default gateway
If DHCP mode is
, enter the default gateway for the DHCP server 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. When the DNS Proxy field is
selected, 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 (optional)
Enter the secondary DNS Server IP address. It is an optional field.
Lease time (minutes)
Enter the duration (in minutes) for which IP addresses will be leased to clients.
Relay gateway
Enter the relay gateway IP address. This field is available when you select
as
DHCP mode
D
.
HCP relay
Allow ping from LAN
If this option is disabled, the ping requests to the LAN interface are blocked.
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
DHCP
or
as the DHCP mode.
relay
None
Jumbo frame
Jumbo frames are Ethernet frames with more than 1500 bytes of payload. When this feature
is enabled, the LAN devices can exchange information at the Jumbo frames rate.
Apply
Click
to save your settings.
apply
Cancel
Click
to revert to the previous settings.
Cancel
DMZ Port
The router supports one of the physical ports to be configured as a dedicated DMZ port. A DMZ is a sub-network that is open to the public but
behind the firewall. The DMZ provides security to the network, as specific services/ports exposed to the Internet on the DMZ do not get exposed
to the Intranet. Therefore, it is recommended that hosts exposed to the Internet (such as web or email servers) be placed in the DMZ network.
Firewall rules can permit access to specific services/ports to the DMZ from LAN or WAN. In an attack on any of the DMZ nodes, the LAN is not
necessarily vulnerable. DMZ configuration is identical to the LAN configuration. There are no restrictions on the IP address or subnet assigned to