357| Virtual Private Networks AOS-W 6.5.3.x| User Guide
n Enabling Source NAT on page 357
n Selecting Certificates on page 358
n Configuring IKE Policies on page 358
n Setting the IPsec Dynamic Map on page 359
n Finalizing WebUI changes on page 360
Defining Authentication Method and Server Addresses
1. Define the authentication method and server addresses.
2. Navigate to Configuration > Advanced Services > VPN Services and click the IPSEC tab.
3. To enable L2TP, select Enable L2TP (this is enabled by default).
4. Select the authentication method for IKEv1 clients. The currently supported methods include:
l Password Authentication Protocol (PAP)
l Extensible Authentication Protocol (EAP)
l Challenge Handshake Authentication Protocol (CHAP)
l Microsoft Challenge Handshake Authentication Protocol (MSCHAP)
l Microsoft Challenge Handshake Authentication Protocol version 2 (MSCHAPv2)
5. Configure the IP addresses of the primary and secondary Domain Name System (DNS) servers and primary
and secondary Windows Internet Naming Service (WINS) Servers that are pushed to the VPN client.
Defining Address Pools
Next, define the pool from which the clients are assigned addresses.
1. In the Address Pools section of the IPSEC tab, click Add to open the Add Address Pool page.
2. Specify the pool name, the start address, and the end address.
3. Click Done.
Enabling Source NAT
In the Source NAT section of the IPSEC tab, select Enable Source NAT if the IP addresses of clients must be
translated to access the network. If source NAT is enabled, click the NAT pool drop-down list and select an
existing NAT pool. To create a new NATpool:
1. Navigate to Configuration > Network > IP > NAT Pools.
2. Click Add.
3. In the Pool Name field, enter a name for the new NAT pool, up to 63 alphanumeric characters.
4. In the Start IP address field, enter the dotted-decimal IP address that defines the beginning of the range
of source NAT addresses in the pool.
5. In the End IP address field, enter the dotted-decimal IP address that defines the end of the range of source
NAT addresses in the pool.
6. In the Destination NAT IP Address field, enter the destination NAT IP address in dotted-decimal format.
If you do not enter an address into this field, the NAT pool uses the destination NAT IP 0.0.0.0.
7. Click Done to close the NAT pools tab.
8. Navigate to Configuration > Advanced Services > VPN Services and click the IPSEC tab to return to the
IPSEC window.
9. Click the NAT Pool drop-down list and select the NAT pool you just created.