Asus SL1200 - Manual (Page 137)

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Chapter 10 - Configuring VPN
ASUS SL1200
10.5.1.2 Configure Rules on Internet Security Router 2 (ISR2)
Step 1: Configure VPN connection rules
Refer to the section
10.3 Establish VPN Connection Using Automatic
Keying to configure VPN policies on ISR2 using automatic keying.
Figure 10.5. Intranet VPN Policy Configuration on ISR2
Step 2: Configure Firewall rules
1. Configure outbound Firewall rule to allow packets from 192.168.2.0/255
.255.255.0 to 192.168.1.0/255.255.255.0 without any NAT.
2. Configure inbound Firewall rule to allow packets from 192.168.1.0/255.
255.255.0 to 192.168.2.0/255.255.255.0 without any NAT.
Table 10.8 and Table 10.9 provide the parameters to be configured for the
outbound and inbound Firewall rule fields. For a general description on
configuring any inbound/outbound Firewall rule, refer to sections 9.3 and
9.4.