Cisco Systems ISA550

Configuration Wizards

Using the Remote Access VPN Wizard

Cisco ISA500 Series Integrated Security Appliances Administration Guide 64

STEP 12 In the Split Tunneling Settings area, enter the following information:

Split tunneling permits specific traffic to be carried outside of the SSL VPN tunnel.

Traffic is either included (resolved in tunnel) or excluded (resolved through the ISP

or WAN connection). Tunnel resolution configuration is mutually exclusive. An IP

address cannot be both included and excluded at the same time.

•Enable Split Tunneling: By default, all of traffic from the host is directed

through the tunnel. Check this box to enable the split tunneling feature so that

the tunnel is used only for traffic that is specified by the client routes.

•Split Selection: If you enable split tunneling, choose one of the following

options:

-Include Traffic: Allo ws y ou to add the clie nt r oute s on the SSL VPN cli ent

so that only traffic to the destination networks can be redirected through

the SSL VPN tunnels. To add a client route, enter the destination subnet

to which a route is added on the SSL VPN client in the Address field and

the subnet mask for the destination network in the Netmask field, and

then click Add.

-Exclude Traffic: Allows you to exclude the destination networks on the

SSL VPN client. Traffic to the destination networks is redirected using the

SSL VPN client’s native network interface (resolved through the ISP or

WAN connection). To add a destination subnet, enter the destination

subnet to which a route is excluded on the SSL VPN client in the Address

field and the subnet mask for the excluded destination in the Netmask

field, and then click Add.

NOTE: To exclude the destination networks, make sure that the Exclude

Local LANs feature is enabled on the Cisco AnyConnect Secure Mobility

clients.

-Exclude Local LANs: If you choose Exclude Traffic, check the box to

permit remote users to access their local LANs without passing through

VPN tunnel, or uncheck the box to deny remote users to access their local

LANs without passing through VPN tunnel.

NOTE: To exclude local LANs, make sure that the Exclude Local LANs

feature is enabled on both the SSL VPN server and the Cisco

AnyConnect Secure Mobility clients.

•Split DNS: Split DNS can direct DNS packets in clear text over the Internet

for domains served through an external DNS (serving your ISP) or through a

SSL VPN tunnel to domains served by the corporate DNS. To add a domain