ZyXEL Communications ZyWALL 2 Series User Manual

Page of 614
ZyWALL 2 Series User’s Guide 
 
14-36 
VPN Screens 
 
Figure 14-13 Telecommuters Sharing One VPN Rule Example 
Table 14-12 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) 
14.18.2 
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 14.12.1), the ZyWALL can use the ID types and contents to 
distinguish between VPN rules. Telecommuters can each use a separate VPN rule to simultaneously access a 
ZyWALL at headquarters. They can use different IPSec parameters. The local IP addresses (or ranges of 
addresses) of the rules configured on the ZyWALL at headquarters can overlap. The local IP addresses of the 
rules configured on the telecommuters’ IPSec routers should not overlap.