Billion 800VGT Router Manual PDF (Setup & Configuration Guide)

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Billion 800VGT Router

Sometime

your

customers

or

friends

may

upload

their

files

to

your

FTP

server

and

that

will

saturate

your

downstream

bandwidth.

The

settings

below

will

help

you

to

limit

bandwidth

for

such

a

application

that

needs

restriction.

Virtual

Server

(known

as

Port

Forwarding)

In

TCP/IP

and

UDP

networks,

a

port

is

a

16-bit

number

used

to

identify

which

application

program

incoming

connections

should

be

delivered

to.

Some

ports

have

numbers

that

are

pre-assigned

to

them

by

the

IANA

(the

Internet

Assigned

Numbers

Authority),

and

these

are

referred

to

as

“well-known

ports”.

Servers

follow

the

well-known

port

assignments

so

clients

can

locate

them.

If

you

wish

to

run

a

server,

or

any

application

(e.g.

Peer-to-peer/P2P

software

such

as

instant

messaging

applications

and

P2P

file-sharing

applications)

on

your

network

that

can

be

accessed

from

the

WAN

(i.e.

from

machines

on

the

Internet

that

are

outside

your

local

network,

and

you

are

using

NAT

(Network

Address

Translation),

then

you

will

need

to

configure

your

router

to

forward

these

incoming

connection

attempts

using

specific

ports

to

the

computer

on

your

network

that

is

running

the

application/server.

You

will

also

need

to

use

port

forwarding

if

you

want

to

host

an

online

game

server.

The

reason

for

this

is

that

when

using

NAT,

your

publicly

accessible

IP

address

will

be

used

by

and

point

to

your

router,

which

then

needs

to

deliver

all

traffic

to

the

private

IP

addresses

used

by

your

PCs.

Please

see

the

WAN

configuration

section

of

this

manual

for

more

information

on

NAT.

The

device

can

be

configured

as

a

virtual

server

so

that

remote

users

accessing

services

such

as

Web

or

FTP

services

on

the

routers

public

(WAN)

IP

address

can

be

automatically

redirected

to

local

servers

on

the

LAN

network.

Depending

on

the

requested

service

(TCP/UDP

port

number),

the

router

redirects

the

external

service

request

to

the

appropriate

server

within

the

LAN

network

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Billion 800VGT Router

Add

Virtual

Server

Because

NAT

can

act

as

a

“natural”

Internet

firewall,

your

router

protects

your

network

from

being

accessed

by

outside

users

when

NAT

is

enabled

-

all

incoming

connection

attempts

will

point

to

your

router

unless

you

specifically

created

Virtual

Server

entries

to

forward

those

ports

to

a

computer

on

your

network.

When

your

router

needs

to

allow

outside

users

to

access

internal

servers,

e.g.

a

web

server,

FTP

server,

Email

server

or

game

server,

the

router

can

act

as

a

“virtual

server”.

You

can

set

up

a

local

server

with

a

specific

port

number

for

the

service

to

use,

e.g.

web/HTTP

(port

80),

FTP

(port

21),

Telnet

(port

23),

SMTP

(port

25),

or

POP3

(port

110),

When

an

incoming

access

request

for

a

specified

port

is

received

by

the

router,

it

will

be

forwarded

to

the

corresponding

internal

server.

Time

Schedule:

The

user-defined

time

period

to

enable

your

virtual

server.

You

may

specify

a

time

schedule

or

Always

on

for

the

use

of

this

Virtual

Server

Entry.

For

setup

and

detail,

refer

to

Time

Schedule

section

Application

:

A

user-defined

description

used

to

identify

this

entry.

You

can

click

to

select

existing

predefined

rules.

:

20

predefined

rules

are

available.

Click

the

Radio

button

to

select

the

rule;

Application,

Protocol

and

External/Redirect

Ports

will

be

automatically

filled

in

after

the

selection.

Protocol

:

This

is

the

protocol

supported

by

the

virtual

server.

In

addition

to

specifying

the

port

number

to

be

used,

you

will

also

need

to

specify

the

protocol

used.

The

protocol

used

is

determined

by

the

particular

application.

Most

applications

will

use

TCP

or

UDP.

External

Port:

The

Port

number

on

the

Remote/WAN

side

used

when

accessing

the

virtual

server.

Redirect

Port:

The

Port

number

used

by

the

Local

server

in

the

LAN

network.

Internal

IP

Address:

The

private

IP

in

the

LAN

network,

which

will

be

providing

the

virtual

server

application.

List

all

existing

computers

currently

connected

to

the

network.

You

may

assign

a

computer

with

an

IP

address

or

a

MAC

address

from

this

list.

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Billion 800VGT Router

Example:

If

you

would

like

to

remotely

access

your

routers’

Web/HTTP

interface

all

the

time,

you

would

need

to

enable

port

number

80

(Web/HTTP)

and

map

it

to

the

Router’s

LAN

IP

Address.

All

incoming

HTTP

requests

on

the

WAN

network

will

then

be

forwarded

to

the

router’s

IP

address

of

192.168.1.254.

Since

port

number

80

is

already

a

predefined

rule,

click

Helper

in

the

Application

section

.

A

predefined

rules

window

will

pop

and

you

can

select

HTTP_Sever

.

Application:

HTTP_Sever

Time

Schedule:

Always

On

Protocol:

tcp

External

Port:

80-80

Redirect

Port:

80-80

IP

Address:

192.168.1.254

Edit:

Click

on

this

to

edit

this

virtual

server

application.

Delete:

Click

on

this

to

delete

this

virtual

server

application.

Using

port

forwarding

has

security

implications,

since

outside

users

will

be

able

to

connect

to

Computers

on

your

network.

For

this

reason

you

are

advised

to

add

specific

Virtual

Server

entries

only

for

the

ports

that

your

application

actually

requires,

instead

of

using

the

DMZ

function.

Using

the

DMZ

function

will

result

in

all

connection

attempts

from

the

WAN

network

having

access

to

the

public

IP

specified

in

the

DMZ

config

section.

If

you

have

disabled

the

NAT

option

in

the

WAN-ISP

section,

the

Virtual

Server

function

will

not

work.

Attention

If

the

DHCP

server

option

is

enabled,

you

have

to

be

very

careful

when

assigning

the

IP

addresses

of

virtual

servers

so

that

you

avoid

conflicting

IP

addresses.

The

easiest

method

of

configuring

Virtual

Servers

is

to

manually

assign

static

IP

address

to

each

virtual

server

Computer,

with

an

address

that

does

not

fall

into

the

range

of

IP

addresses

that

are

to

be

issued

by

the

DHCP

server.

These

manually

configured

IP

addresses

MUST

still

be

in

the

same

subnet

as

the

router.

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Billion 800VGT Router

Edit

DMZ

Host

A

DMZ

Host

is

a

computer

on

the

LAN

that

is

completely

exposed

to

the

Internet.

When

you

have

configured

a

particular

internal

IP

address

as

the

DMZ

Host,

all

incoming

packets

will

be

checked

by

the

routers

firewall

and

NAT

algorithms,

and

if

the

packet

does

not

use

a

port

number

that

has

been

assigned

by

any

Virtual

Server

entry,

it

will

be

passed

to

the

DMZ

host

Cautious:

This

local

computer,

which

is

exposed

to

the

Internet,

may

face

a

variety

of

security

risks.you

should

make

quite

sure

that

it

is

adequately

protected.

²

Disabled:

This

option

disables

the

DMZ

function

and

is

the

default

setting.

²

Enabled:

this

option

enables

the

DMZ

function.

Internal

IP

Address:

When

the

DMZ

function

is

enabled,

supply

the

static

IP

address

of

the

DMZ

Host.

Be

aware

that

this

IP

will

be

exposed

to

the

WAN/Internet.

List

all

Computers

currently

connected

to

the

network.

You

may

assign

a

Computer

using its

IP

address

and/or

its

MAC

address

from

this

list. Select

the

Apply

button

to

apply

your

changes.

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Billion 800VGT Router

Edit

One-to-One

NAT

(Network

Address

Translation)

One-to-One

NAT

maps

a

specific

private/local

(LAN)

IP

address

to

a

particular

global/public

(WAN)

IP

address.

If

you

have

multiple

public/WAN

IP

addresses

provided

by

your

ISP,

you

are

will

be

able

to

use

the

One-to-One

NAT

function

to

utilize

these

IP

addresses.

NAT

Type:

Select

the

desired

NAT

type.

By

default,

the

One-to-One

NAT

function

is

disabled.

Global

IP

Address:

²

Subnet:

The

subnet

of

the

public/WAN

IP

addresses

given

by

your

ISP.

If

your

ISP

has

provided

this

information,

you

may

insert

it

here.

Otherwise,

use

the

IP

Range

method

to

define

your

addresses.

²

IP

Range:

The

IP

address

range

of

your

public/WAN

IP

addresses.

For

example,

IP:

192.168.1.1,

end

IP:

192.168.1.10

Select

the

Apply

button

to

apply

your

changes.

Click

on

to

create

a

new

One-to-One

NAT

rule:

1

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Chapter

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Configuration

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