46

Using the Configuration Menu

Advanced > Filter > Domain Blocking

Use Domain Blocking to allow or deny computers access to specific Internet domains

whether it is through www, ftp, snmp, etc.

Disabled Domain Blocking

Select this option if you do not want to use Domain Blocking.

Allow users to access all domains except “Blocked Domains”

Select this option to allow users to access the specified Internet domains listed below.

Users will be denied access to all other Internet domains.

Deny users to access all domains except “Permitted Domains”

Select this option to deny users to access the specified Internet domains listed below.

Users will be allowed access to all other Internet domains.

47

Using the Configuration Menu

Advanced > Firewall

Firewall Rules is an advance feature used to allow or deny traffic from passing through

the device. It works in the same way as IP Filters with additional settings. You can

create more detailed rules for the device.

Enabled or Disabled

Click

Enabled

to apply the filter policy or click

Disabled

to enter an inactive filter policy

(You can reactivate the policy later).

Name

Enter the name of the Firewall Rule.

Action

Select Allow or Deny to allow or deny traffic to pass through the DI-824VUP+.

Source

Choose between a LAN or WAN source. An asterisk signifies the selection of both sources.

IP Start

The starting IP address for the filter policy. Leaving the field blank selects all IPs.

IP End

The ending IP address for the filter policy. Leaving the field blank sleects all IPs.

Destination

Choose between a LAN or WAN destination. An asterisk signifies the selection of both

destinations.

48

Using the Configuration Menu

Advanced > Firewall

Continued

Schedule

Select

Always

, or choose

From

and enter the time period during which the virtual service

will be available.

IP Address

Enter in the IP address range of the computers that you want the policy to apply to.

If it

is only a single computer that you want the policy applied to, then enter the IP address of

that computer in the Start Source IP and leave the End Source IP blank.

Port Range

Enter in the port range of the TCP/UDP ports that you want the policy to apply to.

If it is

only a single port

that you want the policy applied to, then enter the port number in the

Start Port

field and leave the End Port field blank.

If you want to use all the ports, you can

leave the port range empty.

Protocol

Select one of the following protocols: TCP, UDP, or ICMP.

49

Using the Configuration Menu

Advanced > SNMP

SNMP (Simple Network Management Protocol) is a widely used network monitoring and

control protocol that reports activity on each network device to the administrator of the

network. SNMP can be used to monitor traffic and statistics of the DI-824VUP+. The DI-

824VUP+ supports SNMP v1 or v2c.

Enable SNMP

Get Community

(Simple Network Management Protocol.)

Enter the password

public

in this field to allow “Read only”

access to network administration using SNMP.

You can view

the network, but no configuration is possible wth this setting.

Set Community

Enter the password

private

in this field to gain “Read and Write”

access to the network using SNMP software.

The administra-

tor can configure the network with this setting.

Local

Remote

WAN (Wide Area Network).

LAN (Local Area Network).

SNMP v1

Simple Network Management Protocol (SNMP) is an application

layer protocol that facilitates the exchange of management infor-

mation between nework devices.

SNMP v2

Enhanced version of SNMP v1 with additional protocol opera-

tions such as UDP, IP, CLNS, DDP, and IPX.

50

Using the Configuration Menu

Advanced > DDNS

DDNS (Dynamic Domain Name System) keeps dynamic IP addresses (

e.g.

, IP

addresses assigned by a DHCP capable router or

server) linked to a domain name.

Users who have a Dynamic DNS account may use this feature on the DI-824VUP+.

DDNS

When an IP address is automatically assigned by a DHCP server,

DDNS automatically updates the DNS server.

Select

Disabled

or

Enabled

.

Provider

Select from the pull-down menu.

Host Name

Enter the Host name.

Username/Email

Enter the username or email address.

Password/Key

Enter the password or key.