DrayTek VigorPro 5300 Router Manual PDF (Setup & Configuration Guide)

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138

Medium -Authentication Header (AH)

means data will be

authenticated, but not be encrypted. By default, this option is

invoked. You can uncheck it to disable it.

High-Encapsulating Security Payload (ESP)

means payload

(data) will be encrypted and authenticated. You may select

encryption algorithm from Data Encryption Standard (DES),

Triple DES (3DES), and AES.

Local ID -

Specify a local ID to be used for Dial-in setting in

the LAN-to-LAN Profile setup. This item is optional and can

be used only in IKE aggressive mode.

Callback Function

The callback function provides a callback service only for the

ISDN dial-in user (for

i

model only). The remote user will be

charged the connection fee by the telecom.

Check to enable Callback function

-Enables the callback

function.

Specify the callback number

-The option is for extra security.

Once enabled, the router will ONLY call back to the specified

Callback Number.

Check to enable callback budget control

-By default, the

callback function has a time restriction. Once the callback

budget has been exhausted, the callback mechanism will be

disabled automatically.

Callback Budget (Unit: minutes)

- Specify the time budget

for the dial-in user. The budget will be decreased

automatically per callback connection.

3.10.6 LAN to LAN

Here you can manage LAN-to-LAN connections by maintaining a table of connection

profiles. You may set parameters including specified connection direction (dial-in or

dial-out), connection peer ID, connection type (VPN connection - including PPTP, IPSec

Tunnel, and L2TP by itself or over IPSec) and corresponding security methods, etc.

The router provides up to

100

profiles, which also means supporting

100

VPN tunnels

simultaneously. The following figure shows the summary table.

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Set to Factory Default

Click to clear all indexes.

Name

Indicate the name of the LAN-to-LAN profile. The

symbol

???

represents that the profile is empty.

Status

Indicate the status of individual profiles. The symbol

V and X represent the profile to be active and

inactive, respectively.

Click each index to edit each profile and you will get the following page. Each LAN-to-LAN

profile includes 4 subgroups. If the fields gray out, it means you may leave it untouched. The

following explanations will guide you to fill all the necessary fields.

For the web page is too long, we divide the page into several sections for explanation.

Profile Name

Specify a name for the profile of the LAN-to-LAN

connection.

Enable this profile

Check here to activate this profile.

VPN Connection Through

Use the drop down menu to choose a proper WAN interface

for this profile. This setting is useful for dial-out only.

WAN1 First

- While connecting, the router will use WAN1

as the first channel for VPN connection. If WAN1 fails, the

router will use another WAN interface instead.

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WAN1 Only

- While connecting, the router will use WAN1

as the only channel for VPN connection.

WAN2 First

- While connecting, the router will use WAN2

as the first channel for VPN connection. If WAN2 fails, the

router will use another WAN interface instead.

WAN2 Only

- While connecting, the router will use WAN2

as the only channel for VPN connection.

Netbios Naming Packet

Pass

– click it to have an inquiry for data transmission

between the hosts located on both sides of VPN Tunnel while

connecting.

Block

– When there is conflict occurred between the hosts on

both sides of VPN Tunnel in connecting, such function can

block data transmission of Netbios Naming Packet inside the

tunnel.

Call Direction

Specify the allowed call direction of this LAN-to-LAN profile.

Both

:-initiator/responder

Dial-Out

- initiator only

Dial-In-

responder only.

Always On or Idle Timeout Always On-

Check to enable router always keep VPN

connection.

Idle Timeout:

The default value is 300 seconds. If the

connection has been idled over the value, the router will drop

the connection.

Enable PING to keep alive

This function is to help the router to determine the status of

IPSec VPN connection, especially useful in the case of

abnormal VPN IPSec tunnel disruption. For details, please

refer to the note below. Check to enable the transmission of

PING packets to a specified IP address.

PING to the IP

Enter the IP address of the remote host that located at the

other-end of the VPN tunnel.

Enable PING to Keep Alive

is used to handle abnormal

IPSec VPN connection disruption. It will help to provide

the state of a VPN connection for router’s judgment of

redial.

Normally, if any one of VPN peers wants to disconnect

the connection, it should follow a serial of packet

exchange procedure to inform each other. However, if the

remote peer disconnect without notice, Vigor router will

by no where to know this situation. To resolve this

dilemma, by continuously sending PING packets to the

remote host, the Vigor router can know the true existence

of this VPN connection and react accordingly. This is

independent of DPD (dead peer detection).

ISDN

Build ISDN LAN-to-LAN connection to remote network. You

should set up Link Type and identity like User Name and

Password for the authentication of remote server. You can

further set up Callback (CBCP) function below. This feature is

useful for

i

model only.

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PPTP

Build a PPTP VPN connection to the server through the

Internet. You should set the identity like User Name and

Password below for the authentication of remote server.

IPSec Tunnel

Build an IPSec VPN connection to the server through Internet.

L2TP with …

Build a L2TP VPN connection through the Internet. You can

select to use L2TP alone or with IPSec. Select from below:

None:

Do not apply the IPSec policy. Accordingly, the VPN

connection employed the L2TP without IPSec policy can be

viewed as one pure L2TP connection.

Nice to Have:

Apply the IPSec policy first, if it is applicable

during negotiation. Otherwise, the dial-out VPN connection

becomes one pure L2TP connection.

Must:

Specify the IPSec policy to be definitely applied on the

L2TP connection.

Server IP/Host Name for..

You can specify the IP address of the remote dial-out user.

User Name

This field is applicable when you select ISDN, PPTP or L2TP

with or without IPSec policy above.

Password

This field is applicable when you select ISDN, PPTP or L2TP

with or without IPSec policy above.

PPP Authentication

This field is applicable when you select ISDN, PPTP or L2TP

with or without IPSec policy above. PAP/CHAP is the most

common selection due to wild compatibility.

VJ compression

This field is applicable when you select ISDN, PPTP or L2TP

with or without IPSec policy above. VJ Compression is used

for TCP/IP protocol header compression. Normally set to

Yes

to improve bandwidth utilization.

IKE Authentication

Method

This group of fields is applicable for IPSec Tunnels and L2TP

with IPSec Policy.

Pre-Shared Key

-Input 1-63 characters as pre-shared key.

Digital Signature (X.509)

- Select one predefined Profiles set

in the

VPN and Remote Access >>IPSec Peer Identity

.

IPSec Security Method

This group of fields is a must for IPSec Tunnels and L2TP

with IPSec Policy.

Medium (AH - Authentication Header)

means data will be

authenticated, but not be encrypted. By default, this option is

active.

High (ESP-Encapsulating Security Payload)-

means

payload (data) will be encrypted and authenticated. Select

from below:

DES without Authentication

-Use DES encryption algorithm

and not apply any authentication scheme.

DES with Authentication-

Use DES encryption algorithm and

apply MD5 or SHA-1 authentication algorithm.

3DES without Authentication

-Use triple DES encryption

algorithm and not apply any authentication scheme.

3DES with Authentication-

Use triple DES encryption

algorithm and apply MD5 or SHA-1 authentication algorithm.

AES without Authentication

-Use AES encryption algorithm

and not apply any authentication scheme.

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AES with Authentication-

Use AES encryption algorithm and

apply MD5 or SHA-1 authentication algorithm.

Advanced

Specify mode, proposal and key life of each IKE phase,

Gateway etc.

The window of advance setup is shown as below:

IKE phase 1 mode -

Select from

Main

mode and

Aggressive

mode. The ultimate outcome is to exchange security proposals

to create a protected secure channel.

Main

mode is more

secure than

Aggressive

mode since more exchanges are done

in a secure channel to set up the IPSec session. However, the

Aggressive

mode is faster. The default value in Vigor router is

Main mode.

IKE phase 1 proposal-

To propose the local available

authentication schemes and encryption algorithms to the VPN

peers, and get its feedback to find a match. Two combinations

are available for Aggressive mode and nine for

Main

mode.

We suggest you select the combination that covers the most

schemes.

IKE phase 2 proposal-

To propose the local available

algorithms to the VPN peers, and get its feedback to find a

match. Three combinations are available for both modes. We

suggest you select the combination that covers the most

algorithms.

IKE phase 1 key lifetime-

For security reason, the lifetime of

key should be defined. The default value is 28800 seconds.

You may specify a value in between 900 and 86400 seconds.

IKE phase 2 key lifetime-

For security reason, the lifetime of

key should be defined. The default value is 3600 seconds.

You may specify a value in between 600 and 86400 seconds.

Perfect Forward Secret (PFS)-

The IKE Phase 1 key will be

reused to avoid the computation complexity in phase 2. The

default value is inactive this function.

Local ID -

In

Aggressive

mode, Local ID is on behalf of the IP

address while identity authenticating with remote VPN server.

The length of the ID is limited to 47 characters.

Callback Function

(for

i

models only)

The callback function provides a callback service as a part of

PPP suite only for the ISDN dial-in user. The router owner

will be charged the connection fee by the telecom.

Require Remote to Callback-

Enable this to let the router to

require the remote peer to callback for the connection

afterwards.

Provide ISDN Number to Remote-

In the case that the

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