ZTE ZXDSL 931VII Netvigator Router Manual PDF (Setup & Configuration Guide)

Page 86 / 198 Scroll up to view Page 81 - 85

ZXDSL 931WII Operation manual

F

IGURE

106 WAN S

ERVICE

O

VERVIEW

By default, system preset WAN Interface is

atm0

and

ptm0_1

.

5.

Click

Add

to display the interface as shown in

F

i

g

u

r

e

1

0

7

, and

select PTM interface the Layer 2 interface.

F

IGURE

107 S

ELECT

L

AYER

2 I

NTERFACE

6.

Click

F

i

g

u

r

e

1

0

8

.

80

Conﬁdential and Proprietary Information of ZTE CORPORATION

Page 87 / 198

Chapter 7 VLAN Trunking Conﬁguration

F

IGURE

108 S

ELECT

WAN S

ERVICE

T

YPE

7.

Select

Bridging

.

8.

Select the

Enable VLAN Mux

checkbox and enter the value of

the 802.1q VLAN tag and priority.

9.

Click

F

i

g

u

r

e

1

0

9

.

F

IGURE

109 PTM I

NTERFACE

B

RIDGE

WAN C

ONNECTION

S

ETUP

S

UMMARY

10. Click

Save/Apply

to

save

the

conﬁguration

so

that

the

changes can take effect, as shown in

F

i

g

u

r

e

1

0

.

Conﬁdential and Proprietary Information of ZTE CORPORATION

81

Page 88 / 198

ZXDSL 931WII Operation manual

F

IGURE

110 PTM I

NTERFACE

B

RIDGE

WAN C

ONNECTION

C

ONFIGURATION

C

OMPLETED

11. Go back to

vlan Trunk Setting

interface, select the

LAN in-

terface select

and

vlan Trunk Enable

checkbox to display

the interface as shown in

F

i

g

u

r

e

1

.

F

IGURE

111 VLAN T

RUNKING

C

ONFIGURATION

12. Enter the

Supported VLAN Number

,

Vlan ID

and

PVID

.

Note:

�

PVID CANNOT be the same as the VLAN trunk Id.

�

If PVID is set to ’N/A’, then UNTAGED packets though this

interface will be BLOCKED.

13. Click

Save/Apply

to

save

the

conﬁguration

so

that

the

changes can take effect.

82

Conﬁdential and Proprietary Information of ZTE CORPORATION

Page 89 / 198

C

h

a

p

t

e

r

8

NAT Configuration

Table of Contents

Overview

..........................................................................

83

Virtual Servers Setup

.........................................................

84

Port Triggering

..................................................................

87

DMZ Host

.........................................................................

89

Overview

Setting up the NAT

function

The 931WII is equipped with the

NAT

function. With address map-

ping, several users in the local network can access the Internet via

one or more public IP addresses. All the local IP addresses are as-

signed to the public IP address of the 931WII by default.

One of the characteristics of NAT is that data from the Internet is

not allowed into the local network unless it is explicitly requested

by one of the PCs in the network. Most Internet applications can

run behind the NAT ﬁrewall without any problems.

For example,

if you request Internet pages or send and receive e-mails, the

request for data from the Internet comes from a PC in the local

network, and so the 931WII allows the data to pass through. The

931WII opens one speciﬁc port for the application. A port in this

context is an internal PC address, via which the data is exchanged

between the Internet and a client on a PC in the local network.

Communicating via a port is subject to the rules of a particular

protocol (

TCP

or

UDP

).

If an external application tries to send a call to a PC in the local

network, the 931WII blocks it.

There is no open port via which

the data could enter the local network.

Some applications, such

as games on the Internet, require several links (that is.

several

ports), so that players can communicate with each other. In addi-

tion, these applications must also be permitted to send requests

from other users on the Internet to users in the local network.

These applications cannot be run if NAT is activated.

Using port forwarding (the forwarding of requests to particular

ports) the 931WII is forced to send requests from the Internet for

a certain service, for example, a game, to the appropriate port(s)

on the PC on which the game is running. Port triggering is a spe-

cial variant of port forwarding. Unlike port forwarding, the 931WII

forwards the data from the port block to the PC which has pre-

viously sent data to the Internet via a certain port (trigger port).

This means that approval for the data transfer is not tied to one

speciﬁc PC in the network, but rather to the port numbers of the

required Internet service.

Conﬁdential and Proprietary Information of ZTE CORPORATION

83

Page 90 / 198

ZXDSL 931WII Operation manual

Conﬁguring Port

Triggering

Deﬁne a trigger port for the application and the protocol (

TCP

or

UDP

) that this port uses. You then assign the public ports that are

to be opened for the application to this trigger port.

The 931WII checks all outgoing data for the port number and pro-

tocol.

If it identiﬁes a match of port and protocol for a deﬁned

trigger port, then it opens the assigned public ports and notes the

IP address of the PC that sent the data. If data comes back from

the Internet via one of these public ports, the 931WII allows it to

pass through and directs it to the appropriate PC. A trigger event

always comes from a PC within the local network. If a trigger port

is addressed from outside, the 931WII simply ignores it.

Note:

�

An application that is conﬁgured for port triggering can only be

run by one user in the local network at a time.

�

After public ports are open, they can be used by unauthorized

persons to gain access to a PC in the local network.

�

When the 931WII is supplied, the NAT is activated, i.e.

all

IP addresses of PCs in the local network are converted to the

public IP address of the 931WII when accessing the Internet.

�

IP addresses of the PCs must remain unchanged.

If the IP

addresses of the PCs are assigned via the DHCP server of the

931WII, you must select Never expires as the settings in the

local network menu entry for the lease time or assign static IP

addresses for the PCs.

You can activate or deactivate the NAT function.

By default, the

NAT function is activated.

Virtual Servers Setup

Background

By default, the 931WII blocks all external users from connecting

to or communicating with your network.

Therefore, the system

is safe from hackers who may try to intrude on the network and

damage it, as shown in

F

i

g

u

r

e

1

2

.

84

Conﬁdential and Proprietary Information of ZTE CORPORATION

Rate

Popular ZTE Models

Famous Router IPs

Famous Router Companies

Bookmark Our Site

Share