Pirelli VoIP-AG-v1-t-Annex-A-OT Router Manual PDF (Setup & Configuration Guide)

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A client (host) sends out a broadcast message on the LAN requesting an IP

address for itself. The DHCP server then checks its list of available addresses

and leases a local IP address to the host for a specific period of time and simul-

taneously designates this IP address as `taken'. At this point the host is config-

ured with an IP address for the duration of the lease.

The host can choose to renew an expiring lease or let it expire. If it chooses to

renew a lease then it will also receive current information about network ser-

vices, as it did with the original lease, allowing it to update its network configura-

tions to reflect any changes that may have occurred since it first connected to

the network. If the host wishes to terminate a lease before its expiration it can

send a release message to the DHCP server, which will then make the IP

address available for use by others.

Your gateway's DHCP server:

•

Displays a list of all DHCP host devices connected to the Router

•

Defines the range of IP addresses that can be allocated in the LAN

•

Defines the length of time for which dynamic IP addresses are allocated

•

Provides the above configurations for each LAN device and can be configured and enabled/dis-

abled separately for each LAN device

•

Can assign a static lease to a LAN PC so that it receives the same IP address each time it con-

nects to the network, even if this IP address is within the range of addresses that the DHCP

server may assign to other computers

•

Provides the DNS server with the host name and IP address of each PC that is connected to the

LAN

Additionally, the Router can act as a DHCP relay, escalating DHCP responsibili-

ties to a WAN DHCP server. In this case, DISCUS™ Multiplay Wireless VoIP

AG will act merely as a router, while its LAN hosts will receive their IP addresses

from a DHCP server on the WAN.

With the Router's optional Zero Configuration Technology feature, the IP Auto

Detection method detects statically-defined IP addresses in addition to the

Router's DHCP clients. It learns all the IP addresses on the LAN, and integrates

the collected information with the database of the DHCP server. This allows the

DHCP server to issue valid leases, thus avoiding conflicting IP addresses used

by other computers in the network.

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FIGURE 13.

IP Address Distribution Panel

NETWORK OBJECTS

Network Objects is a method used to abstractly define a set of LAN hosts,

according to one or more MAC address, IP address, and host name. Defining

such a group can assist when configuring system rules. For example, network

objects can be used when configuring the Router's security filtering settings

such as IP address filtering, host name filtering or MAC address filtering.

You can use network objects in order to apply security rules based on host

names instead of IP addresses. This may be useful, since IP addresses change

from time to time. Moreover, it is possible to define network objects according to

MAC addresses, making rule application more persistent against network con-

figuration settings.

FIGURE 14.

Network Objects Panel

To define a network object:

1.

Click the 'Network Objects' icon in the 'Advanced' screen of the Web-based

Management. The 'Network Objects' screen will appear

2.

Click the 'New Entry' link, the 'Edit Network Object' screen will appear.

3.

Name the network object in the Description field, and click New Entry to

actually create it. The 'Edit Item' screen will appear. The source address can

be entered in one of the following methods: IP Address, IP Subnet, IP

Range, MAC Address and Host Name. When selecting a method from the

combo-box, the screen will refresh, presenting the respective fields by which

to enter the relevant information.

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4.

Select a method and enter the source address accordingly.

5.

Click 'OK' to save the settings.

PPPOE RELAY

PPPoE Relay enables DISCUS™ Multiplay Wireless VoIP AG to relay packets

on PPPoE connections, while keeping its designated functionality for any addi-

tional connections.

The PPPoE Relay screen displays a check-box that enables PPPoE Relay.

FIGURE 15.

PPPoE Relay Panel

PERSONAL DOMAIN NAME

(DYNAMIC DNS)

The Dynamic DNS (DDNS) service enables you to alias a dynamic IP address

to a static hostname, allowing your computer to be more easily accessible from

various locations on the Internet. Typically, when you connect to the Internet,

your service provider assigns an unused IP address from a pool of IP

addresses, and this address is used only for the duration of a specific connec-

tion. Dynamically assigning addresses extends the usable pool of available IP

addresses, whilst maintaining a constant domain name.

When using the DDNS service, each time the IP address provided by your ISP

changes, the DNS database will change accordingly to reflect the change. In

this way, even though your IP address will change often, your domain name will

remain constant and accessible.

FIGURE 16.

Personal Domain Name (Dynamic DNS) Panel

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In order to use the DDNS feature, you must first obtain a DDNS account. For

example, you can open a free account at

http://www.dyndns.org/account/cre-

ate.html

. When applying for an account, you will need to specify a user name

and password. Please have them readily available when customizing Router's

DDNS support.

Use the DDNS feature to define different static host names for each of your

WAN connections. Moreover, you can define more than one static host name for

each WAN connection, by simply repeating the following procedure for the same

connection.

1.

Access the Dynamic DNS settings either from its link in the 'Advanced' tab

under the 'Services' screen, or by clicking the 'Dynamic DNS' icon in the

'Advanced' screen. The 'Dynamic DNS' connections screen will appear. This

screen displays a table that will present the different connections and their

DDNS aliases.

2.

Click the 'New Dynamic DNS Entry' link to add a new DDNS entry. The

'Dynamic DNS' screen will appear

3.

Specify the DDNS parameters

PRINT SERVER

The DISCUS™ Multiplay Wireless VoIP AG can act as a Print Server (see

Figure 17). Through this panel user can manage and track printer server tasks.

FIGURE 17.

Print Server Panel

PROTOCOLS

The Protocols feature incorporates a list of preset and user-defined applications

and common port settings. You can use protocols in various security features

such as Access Control and Port Forwarding. You may add new protocols to

support new applications or edit existing ones according to your needs.

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To view the basic protocols list, click the 'Protocols' icon in the 'Advanced'

screen. Press the 'Advanced' button at the bottom of this screen for the full list of

protocols supported by the Router.

To define a protocol:

1.

Click the 'Protocols' icon in the 'Advanced' screen. The 'Protocols' screen will

appear.

2.

Click the 'New Entry' link, the 'Edit Service' screen will appear.

3.

Name the service in the 'Service Name' field, and click the 'New Service

Ports' link. The 'Edit Service Server Ports' screen will appear. You may

choose any of the protocols available in the combo-box, or add a new one by

selecting 'Other'. When selecting a protocol from the combo-box, the screen

will refresh, presenting the respective fields by which to enter the relevant

information.

4.

Select a protocol and enter the relevant information.

5.

Click 'OK' to save the settings.

FIGURE 18.

Protocols Panel

RADIUS

For authentication to work, the client's transmission must go through the Router,

and reach the back-end server that performs the actual authentication. The

wireless client contacts the access point, which in turn communicates with the

Remote Authentication Dial-in User Service (RADIUS) server. The RADIUS

server verifies the client's credentials to determine whether the device is autho-

rized to connect to the LAN. If the RADIUS server accepts the client, the server

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