ZyXEL Communications P-335WT - Manual (Page 45)

P-335 Series User’s Guide
Chapter 1 Getting to Know Your Prestige 45
1.2.2.5 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 Prestige VPN is based on the IPSec standard and is
fully interoperable with other IPSec-based VPN products.
1.2.2.6 Firewall
The Prestige is a stateful inspection firewall with DoS (Denial of Service) protection. By
default, when the firewall is activated, all incoming traffic from the WAN to the LAN is
blocked unless it is initiated from the LAN. The Prestige firewall supports TCP/UDP
inspection, DoS detection and prevention, real time alerts, reports and logs.
1.2.2.7 IEEE 802.1x Network Security (P-335WT only)
The Prestige supports the IEEE 802.1x standard to enhance user authentication. Use the built-
in user profile database to authenticate up to 32 users using MD5 encryption. Use an EAP-
compatible RADIUS (RFC2138, 2139 - Remote Authentication Dial In User Service) server
to authenticate a limitless number of users using EAP (Extensible Authentication Protocol).
EAP is an authentication protocol that supports multiple types of authentication.
1.2.2.8 Content Filtering
Content filtering allows you to block access to forbidden Internet web sites, schedule when the
Prestige should perform the filtering and give trusted LAN IP addresses unfiltered Internet
access.
1.2.2.9 Brute-Force Password Guessing Protection
The Prestige has a special protection mechanism to discourage brute-force password guessing
attacks on the Prestige’s management interfaces. You can specify a wait-time that must expire
before entering a fourth password after three incorrect passwords have been entered. Please
see the appendices for details about this feature.
1.2.2.10 802.11b Wireless LAN Standard (P-335WT only)
The Prestige, complies with the 802.11b wireless standard.
The 802.11b data rate and corresponding modulation techniques are as follows. The
modulation technique defines how bits are encoded onto radio waves.
Table 1 IEEE 802.11b
DATA RATE (KBPS) MODULATION
1 DBPSK (Differential Binary Phase Shift Keyed)
2 DQPSK (Differential Quadrature Phase Shift Keying )
5.5 / 11 CCK (Complementary Code Keying)