Huawei B2268H

LTE TDD B2268H
User Guide
10 Firewall
Issue 01 (2014-01-15)
Copyright © Huawei Technologies Co., Ltd.
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longer have access to network resources. The LTE Device is pre-configured to automatically
detect and thwart all known DoS attacks.
Firewall
The LTE Device's firewall feature physically separates the LAN/WLAN and the WAN and acts
as a secure gateway for all data passing between the networks.
It is designed to protect against Denial of Service (DoS) attacks when activated. The LTE
Device's purpose is to allow a private Local Area Network (LAN) to be securely connected to
the Internet. The LTE Device 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 LTE Device is installed between the LAN/WLAN 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 LTE Device 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.
Enabling the firewall may impact the system performance.
ICMP
Internet Control Message Protocol (ICMP) is a message control and error-reporting protocol
between a host server and a gateway to the Internet. ICMP uses Internet Protocol (IP) datagrams,
but the messages are processed by the TCP/IP software and directly apparent to the application
user.
Finding Out More
See Section 11.6 for advanced technical information on firewall.
10.2 The General Screen
Use this screen to enable or disable the LTE Device's firewall. Click Security > Firewall to
open the General screen.