ZyXEL Communications P-2612HW Series User Manual page 288

Chapter 14 VPN
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.
Figure 172 Telecommuters Using Unique VPN Rules Example
192.168.2.12
192.168.3.2
192.168.4.15
Table 94 Telecommuters Using Unique VPN Rules Example
TELECOMMUTERS
All Telecommuter Rules:
My IP Address 0.0.0.0
Secure Gateway Address:
bigcompanyhq.com
Remote IP Address: 192.168.1.10
Peer ID Type: E-mail
Peer ID Content: bob@bigcompanyhq.com
Telecommuter A
(telecommutera.dydns.org)
Local ID Type: IP
Local ID Content: 192.168.2.12
Local IP Address: 192.168.2.12
288
A
LAN
B
LAN
C
LAN
HQ
Internet
HEADQUARTERS
All Headquarters Rules:
My IP Address: bigcompanyhq.com
Local IP Address: 192.168.1.10
Local ID Type: E-mail
Local ID Content: bob@bigcompanyhq.com
Headquarters ZyXEL Device Rule 1:
Peer ID Type: IP
Peer ID Content: 192.168.2.12
Secure Gateway Address:
telecommuter1.com
Remote Address 192.168.2.12
P-2612HW Series User's Guide
LAN
192.168.1.10