Load Balancing; Transparent Firewall; Ipsec Vpn Capability; Non-Physical Features - ZyXEL Communications ZyWall 35 User Manual

IEEE 802.11 b/g Wireless LAN
The optional wireless LAN card provides mobility and a fast network environment for small
and home offices. Users can connect to the local area network without any wiring efforts and
enjoy reliable high-speed connectivity.

1.2.2 Non-Physical Features

Load Balancing

The ZyWALL improves quality of service and maximizes bandwidth utilization by dividing
traffic loads between the two WAN interfaces (or ports).

Transparent Firewall

Transparent firewall is also known as a bridge firewall. The ZyWALL can act as a bridge and
still have the capability of filtering and inspecting the packets between a router and the LAN,
or two routers. You do not need to do any other changes to your existing network.
SIP Passthrough
The ZyWALL includes a SIP Application Layer Gateway (ALG). It allows VoIP calls to pass
through NAT by examining and translating IP addresses embedded in the data stream.
STP (Spanning Tree Protocol) / RSTP (Rapid STP)
When the ZyWALL is set to bridge mode, (R)STP detects and breaks network loops and
provides backup links between switches, bridges or routers. It allows a bridge to interact with
other (R)STP -compliant bridges in your network to ensure that only one path exists between
any two stations on the network.
Bandwidth Management
Bandwidth management allows you to allocate network resources according to defined
policies. This policy-based bandwidth allocation helps your network to better handle real-time
applications such as Voice-over-IP (VoIP).

IPSec VPN Capability

Establish a Virtual Private Network (VPN) to connect with business partners and branch
offices using data encryption and the Internet to provide secure communications without the
expense of leased site-to-site lines. The ZyWALL VPN is based on the IPSec standard and is
fully interoperable with other IPSec-based VPN products.
X-Auth (Extended Authentication)
X-Auth provides added security for VPN by requiring each VPN client to use a username and
password.
Chapter 1 Getting to Know Your ZyWALL
ZyWALL 35 User's Guide
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