ZyXEL Communications ADSL VoIP IAD with 802.11g Wireless 2602HW Series Podręcznik Użytkownika Pobierz pdf (Strona 226)

100

101

Prestige 2602HW Series User’s Guide

226 Chapter 17 VPN Screens

Figure 95 Telecommuters Sharing One VPN Rule Example

17.18.2 Telecommuters Using Unique VPN Rules Example

In this example the telecommuters (A, B and C in the figure) use IPSec routers with domain

names that are mapped to their dynamic WAN IP addresses (use Dynamic DNS to do this).

With aggressive negotiation mode (see Section 17.12.1 on page 216), the Prestige can use the

ID types and contents to distinguish between VPN rules. Telecommuters can each use a

separate VPN rule to simultaneously access a Prestige at headquarters. They can use different

IPSec parameters. The local IP addresses (or ranges of addresses) of the rules configured on

the Prestige at headquarters can overlap. The local IP addresses of the rules configured on the

telecommuters’ IPSec routers should not overlap.

See the following table and figure for an example where three telecommuters each use a

different VPN rule for a VPN connection with a Prestige located at headquarters. The Prestige

at headquarters (HQ in the figure) identifies each incoming SA by its ID type and content and

uses the appropriate VPN rule to establish the VPN connection.

The Prestige at headquarters can also initiate VPN connections to the telecommuters since it

can find the telecommuters by resolving their domain names.

Table 70 Telecommuters Sharing One VPN Rule Example

FIELDS TELECOMMUTERS HEADQUARTERS

My IP Address: 0.0.0.0 (dynamic IP address assigned

by the ISP)

Public static IP address

Secure Gateway IP

Address:

Public static IP address 0.0.0.0 With this IP address only the

telecommuter can initiate the IPSec

tunnel.

Local IP Address: Telecommuter A: 192.168.2.12

Telecommuter B: 192.168.3.2

Telecommuter C: 192.168.4.15

192.168.1.10

Remote IP Address: 192.168.1.10 0.0.0.0 (N/A)

1 2 ... 221 222 223 224 225 226 227 228 229 230 231 ... 518 519

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