ZyXEL ARMOR Z1 User Guide - Page 132

IPv4 Firewall Screen, About the ARMOR Z1 Firewall

Page 132 highlights

Chapter 14 Security About the ARMOR Z1 Firewall The ARMOR Z1's firewall feature physically separates the LAN and the WAN and acts as a secure gateway for all data passing between the networks. It is a stateful inspection firewall and is designed to protect against Denial of Service attacks when activated (click the IPv4 Firewall or IPv6 Firewall tab under Security and then click the Enable Firewall check box). The ARMOR Z1's purpose is to allow a private Local Area Network (LAN) to be securely connected to the Internet. The ARMOR Z1 can be used to prevent theft, destruction and modification of data, as well as log events, which may be important to the security of your network. The ARMOR Z1 is installed between the LAN and a broadband modem connecting to the Internet. This allows it to act as a secure gateway for all data passing between the Internet and the LAN. The ARMOR Z1 has one Ethernet WAN port and four Ethernet LAN ports, which are used to physically separate the network into two areas.The WAN (Wide Area Network) port attaches to the broadband (cable or DSL) modem to the Internet. The LAN (Local Area Network) port attaches to a network of computers, which needs security from the outside world. These computers will have access to Internet services such as e-mail, FTP and the World Wide Web. However, "inbound access" is not allowed (by default) unless the remote host is authorized to use a specific service. Guidelines For Enhancing Security With Your Firewall 1 Change the default password via Web Configurator. 2 Think about access control before you connect to the network in any way, including attaching a modem to the port. 3 Limit who can access your router. 4 Don't enable any local service (such as NTP) that you don't use. Any enabled service could present a potential security risk. A determined hacker might be able to find creative ways to misuse the enabled services to access the firewall or the network. 5 For local services that are enabled, protect against misuse. Protect by configuring the services to communicate only with specific peers, and protect by configuring rules to block packets for the services at specific interfaces. 6 Protect against IP spoofing by making sure the firewall is active. 7 Keep the firewall in a secured (locked) room. 14.2 IPv4 Firewall Screen Use this screen to enable or disable the ARMOR Z1's IPv4 firewall, and set up firewall logs. Click Expert > Security > IPv4 Firewall to open the firewall setup screen. ARMOR Z1 User's Guide 132

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Chapter 14 Security
ARMOR Z1 User’s Guide
132
About the ARMOR Z1 Firewall
The ARMOR Z1’s firewall feature physically separates the LAN and the WAN and acts as a secure
gateway for all data passing between the networks.
It is a stateful inspection firewall and is designed to protect against Denial of Service attacks when
activated (click
the
IPv4 Firewall
or
IPv6 Firewall
tab under
Security
and then click the
Enable
Firewall
check box). The ARMOR Z1's purpose is to allow a private Local Area Network (LAN) to be
securely connected to the Internet. The ARMOR Z1 can be used to prevent theft, destruction and
modification of data, as well as log events, which may be important to the security of your network.
The ARMOR Z1 is installed between the LAN and a broadband modem connecting to the Internet.
This allows it to act as a secure gateway for all data passing between the Internet and the LAN.
The ARMOR Z1 has one Ethernet WAN port and four Ethernet LAN ports, which are used to
physically separate the network into two areas.The WAN (Wide Area Network) port attaches to the
broadband (cable or DSL) modem to the Internet.
The LAN (Local Area Network) port attaches to a network of computers, which needs security from
the outside world. These computers will have access to Internet services such as e-mail, FTP and
the World Wide Web. However, "inbound access" is not allowed (by default) unless the remote host
is authorized to use a specific service.
Guidelines For Enhancing Security With Your Firewall
1
Change the default password via Web Configurator.
2
Think about access control before you connect to the network in any way, including attaching a
modem to the port.
3
Limit who can access your router.
4
Don't enable any local service (such as NTP) that you don't use. Any enabled service could present
a potential security risk. A determined hacker might be able to find creative ways to misuse the
enabled services to access the firewall or the network.
5
For local services that are enabled, protect against misuse. Protect by configuring the services to
communicate only with specific peers, and protect by configuring rules to block packets for the
services at specific interfaces.
6
Protect against IP spoofing by making sure the firewall is active.
7
Keep the firewall in a secured (locked) room.
14.2
IPv4 Firewall Screen
Use this screen to enable or disable the ARMOR Z1’s IPv4 firewall, and set up firewall logs. Click
Expert
>
Security
>
IPv4
Firewall
to open the firewall setup screen.