Tutorial; Chapter 4 Tutorial; Security Settings For Vpn Traffic; Idp For From Vpn Traffic Example - ZyXEL Communications ZYWALL 35 User Manual

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H A P T E R
This chapter describes how to apply security settings to VPN traffic and how to set up a 3G
WAN connection.

4.1 Security Settings for VPN Traffic

The ZyWALL can apply the firewall, IDP, anti-virus, anti-spam and content filtering to the
traffic going to or from the ZyWALL's VPN tunnels. The ZyWALL applies the security
settings to the traffic before encrypting VPN traffic that it sends out or after decrypting
received VPN traffic.
The security settings apply to VPN traffic going to or from the ZyWALL's VPN
tunnels. They do not apply to other VPN traffic for which the ZyWALL is not
one of the gateways (VPN pass-through traffic).
You can turn on content filtering for all of the ZyWALL's VPN traffic (regardless of its
direction of travel). You can apply firewall, IDP, anti-virus and anti-spam security to VPN
traffic based on its direction of travel. The following examples show how you do this for IDP
and the firewall.

4.1.1 IDP for From VPN Traffic Example

You can apply security settings to the From VPN packet direction to protect your network
from attacks, intrusions, viruses and spam that may come in through a VPN tunnel. For
example, you can use IDP to protect your LAN from intrusions that might come in through
any of the VPN tunnels or interfaces.
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