Chapter 18 VPN Screens

Figure 149 Telecommuters Sharing One VPN Rule Example

Table 101 Telecommuters Sharing One VPN Rule Example

FIELDS

TELECOMMUTERS

HEADQUARTERS

My IP Address:

0.0.0.0 (dynamic IP address

Public static IP address

 

assigned by the ISP)

 

 

 

 

 

 

Secure Gateway IP

Public static IP address

0.0.0.0

With this IP address only the

Address:

 

telecommuter can initiate the IPSec

 

 

tunnel.

 

 

 

 

Local IP Address:

Telecommuter A: 192.168.2.12

192.168.1.10

 

Telecommuter B: 192.168.3.2

 

 

 

Telecommuter C: 192.168.4.15

 

 

 

 

 

Remote IP

192.168.1.10

0.0.0.0 (N/A)

Address:

 

 

 

 

 

 

 

18.18.2 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 18.12.1 on page 251), the ZyXEL Device can use the ID types and contents to distinguish between VPN rules. Telecommuters can each use a separate VPN rule to simultaneously access a ZyXEL Device at headquarters. They can use different IPSec parameters. The local IP addresses (or ranges of addresses) of the rules configured on the ZyXEL Device 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 ZyXEL Device located at headquarters. The ZyXEL Device 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 ZyXEL Device at headquarters can also initiate VPN connections to the telecommuters since it can find the telecommuters by resolving their domain names.

260

 

P-2602H(W)(L)-DxA User’s Guide