Chapter 16 VPN
P-661HNU-Fx User’s Guide
239
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 107 Telecommuters Using Unique VPN Rules Example
Table 68 Telecommuters Using Unique VPN Rules Example
TELECOMMUTERS HEADQUARTERS
All Telecommuter Rules: All Headquarters Rules:
0.0.0.0 My IP Address: bigcompanyhq.com
Secure Gateway Address:
bigcompanyhq.com
Local IP Address: 192.168.1.10
Remote IP Address: 192.168.1.10 Local ID Type: E-mail
Peer ID Type: E-mail Local ID Content: bob@bigcompanyhq.com
Peer ID Content: bob@bigcompanyhq.com
Telecommuter A
(telecommutera.dydns.org)
Headquarters ZyXEL Device Rule 1:
Local ID Type: IP Peer ID Type: IP
Local ID Content: 192.168.2.12 Peer ID Content: 192.168.2.12
Local IP Address: 192.168.2.12 Secure Gateway Address:
telecommuter1.com
Remote Address 192.168.2.12
LAN
192.168.2.12
LAN
192.168.3.2
LAN
192.168.4.15
A
B
C
LAN
192.168.1.10
HQ
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