Chapter 12

Network Address Translation (NAT)

91

The SIP ALG allows SIP calls to pass through NAT by examining and translating IP addresses

embedded in the data stream. When the Router registers with the SIP register server, the SIP ALG

translates the Router’s private IP address inside the SIP data stream to a public IP address. You do

not need to use STUN or an outbound proxy if you enable the SIP ALG.

Figure 47

Network Setting > NAT > ALG

Table 44

Network Setting > NAT > ALG

LABEL

DESCRIPTION

ALG

Enable this to make sure SIP (VoIP) works correctly with port-forwarding.

13

Chapter 13

Dynamic DNS

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13

Chapter 13

Dynamic DNS

13.1 The Dynamic DNS Screen

Use the

Dynamic DNS

screen to enable DDNS and configure the DDNS settings on the Router. Click

Network Setting > Dynamic DNS

.

Figure 48

Network Setting > Dynamic DNS

Table 45

Network Setting > Dynamic DNS

LABEL

DESCRIPTION

Dynamic DNS

Select

Enable

to use dynamic DNS.

Service Provider

Select the name of your Dynamic DNS service provider.

Host Name

Type the domain name assigned to your Router by your Dynamic DNS provider.

Username

Type your user name for the Dynamic DNS service provider.

Password

Type your password for the Dynamic DNS service provider.

Apply

Click

Apply

to save your changes.

Undo

Click

Undo

to restore your previously saved settings.

Dynamic DNS Status

Chapter 13

Dynamic DNS

93

User

Authentication

Result

This field displays the results of the Router’s attempt to authenticate with the Dynamic

DNS service provider.

Last Updated

Time

This field displays when the Router last updated its WAN IP address to the Dynamic

DNS service provider.

Current Dynamic

IP

This field displays the Router’s current WAN IP address.

Table 45

Network Setting > Dynamic DNS (continued)

LABEL

DESCRIPTION

14

Chapter 14

Filter

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14

Chapter 14

Filter

14.1

The IP/MAC Filter Screen

Use the

IP/MAC Filter

screen to create and apply IP/MAC filters. Click

Security

>

Filter

to show the

IP/MAC Filter

screen.

Figure 49

Security > Filter > IP/MAC Filter

Chapter 14

Filter

95

Table 46

Security > Filter > IP/MAC Filter

LABEL

DESCRIPTION

Rule Type selection

Select

White List

to create a filter rule that allows traffic.

Select

Black List

to create a filter rule that blocks traffic.

IP/MAC Filter Rule Index

Select the index number of the filter rule.

Active

Use this field to enable or disable the rule.

Interface

Select the interface to which to apply the filter.

Direction

Apply the filter to

Incoming

or

Outgoing

traffic direction.

Rule Type

Select

IP

to filter traffic by IP addresses.

Select

MAC

to filter traffic by MAC address.

Source IP Address

Enter the source IP address of the packets you wish to filter.

Subnet Mask

Enter the IP subnet mask for the source IP address

Port Number

Enter the source port of the packets that you wish to filter.

Destination IP Address

Enter the destination IP address of the packets you wish to filter.

Subnet Mask

Enter the IP subnet mask for the destination IP address.

Port Number

Enter the destination port of the packets that you wish to filter.

Protocol

Select

ICMP

,

TCP

or

UDP

for the upper layer protocol.

Source MAC Address

This field is only available when you select

MAC

in the

Rule Type

field.

Enter the MAC address of the packets you wish to filter.

Active

This field shows whether the rule is activated.

Interface

This field shows the interface to which the filter rule applies.

Direction

The filter rule applies to this traffic direction.

Src IP/Mask

This is the source IP address and subnet mask when you select

IP

as the rule

type.

This is the MAC address when you select

MAC

as the rule type.

Dest IP/Mask

This is the destination IP address and subnet mask.

MAC Address

For a MAC filter rule this field shows the MAC address of the packets to filter.

Src Port

This is the source port number.

Dest Port

This is the destination port number.

Protocol

This is the upper layer protocol.