Huawei HA35 User Manual

Version 2.1 (May 2016) 46
Picture 6-14 firewall
ICMP Flood: The attacker sends plenty of ICMP packets to the specific target within a
short time period to request responses, causing the target system unduly burdened and
unable to process legitimate transmissions.
SYN Flood: The TCP/IP protocol stack only permits a limited number of TCP connections
due to resource restrictions. SYN Flood attacks utilize this feature. The attacker forges a
SYN packet whose source address is forged or nonexistent, and initiates a connection to
the server. Upon receipt of this packet, the server replies with a SYN-ACK packet. Because
there is no receiver of the SYN-ACK packet, a half-connection is established. If the attacker
sends large numbers of such packets, a lot of half-connections are established on the
attacked host and the resources of the attacked host are exhausted; therefore, normal
users cannot access the host until the half-connections expire. In some implementations
where connections can be created without restrictions, SYN Flood has similar influences
that consume the system resources such as the memory.
ARP attack: In ARP attacks, through the vulnerability of ARP, the attacker makes hosts on
a LAN unable to access the Internet by forging data to refresh the dynamic ARP table.
Alternatively, the attacker causes network breakdown or data disclosure by spoofing to
steal sensitive information.
6.6. Configure an ACL
After ACL is enabled, you can limit the access rights of unauthorized users and prevent
network resources from being used improperly.
1. Log in to the web management page.
2. Choose Internet tab.
3. In the navigation tree, choose Network Security.
4. Select the ACL configuration page.
5. Click New ACL.

Huawei HA35 Specifications

General

Brand	Huawei
Model	HA35
Category	Gateway
Language	English

Summary

Hardware Installation

Installing the HA35 on a Hybrid Broadband Network

Details connecting the HA35 to a hybrid broadband network.

PSTN or Broadband Telephone Line with one voice channel and a 3G/4G connection

Connects HA35 to PSTN/Broadband with 3G/4G backup.

ISDN Line and 3G/4G connection

Connects HA35 to ISDN with 3G/4G backup.

Installing the HA35 on a DSL Broadband Network

Details connecting the HA35 to a DSL broadband network.

PSTN or Broadband Telephone Line with one voice channel

Connects HA35 to PSTN/Broadband over DSL.

ISDN Line

Connects HA35 to ISDN over DSL.

Installing the HA35 on a 3G/4G Network

Details connecting the HA35 directly to a 3G/4G network.

Setting Network Parameters

Logging In to the Web Management Page

Instructions for accessing and logging into the HA35 web interface.

Setting Network Access Parameters

Configures network access parameters for various connection types.

Accessing the Network through the Hybrid gateway

Configures network access using the setup wizard for hybrid connections.

Accessing the Network through DSL

Configures network access using the setup wizard for DSL connections.

Accessing the Network through the SIM card

Configures network access using a SIM card for 3G/4G.

Configuring a Wireless Account

Wireless Connection Setup

Setting Up a Wireless Connection Using the WPS Button

Manually Setting Up a Wireless Connection

WLAN Configuration

Changing Your WLAN Name and Password

Steps to change the Wi-Fi network name (SSID) and password.

Network Security

Improving WLAN Security

Methods to enhance the security of the wireless network.

Hiding the WLAN Name

Using High Security Encryption Modes

Recommends and explains secure encryption modes like WPA2-PSK.

Allowing Only Specified Computers to Access Your WLAN

Configures MAC filtering to allow only specific devices on the WLAN.

Controlling Computer Internet Access

Sets up parental controls for limiting internet access time for devices.

Filtering Out Inappropriate Websites

Configuring the Firewall

Sets up the firewall levels for network protection.

Recommended Firewall Level

Configuring the Firewall

Configure an ACL

Configure DMZ

Configure Application Filter

Configure Port Forwarding

Configure Port Mapping

Configure Port Trigger

IP Telephony

Configuring VoIP

USB Device

Setting the FTP Access Permission

Accessing to FTP Server Through the User Name and Password

Accessing a USB Storage Device Using FTP

Setting the Samba Access Permission

Accessing Data Using Samba

Maintenance Guide

Changing the IP Address Used to Log In to the Web Management Page

Setting the DHCP Server IP range

Changing the Web Management Page Password

How to change the password for the web management interface.

Rebooting Device

Restoring Default Settings

How to reset the HA35 to its factory default settings.

Using the Reset Button

Using the Configuration Tool

Upgrading Firmware

Instructions for upgrading the HA35's firmware.

Using Ping Tool Diagnose Network

Using Tracert Tool Diagnose Network

FAQS

What Can I Do If I Cannot Open the Web Management Page?

Troubleshooting steps for accessing the web management page.

What Can I Do If the HA35 Cannot Access the Internet through a Wireless Network Adapter Sometimes or If the WLAN Connection Is Unsteady?

Troubleshooting for unstable wireless connections.

What Can I Do If I Cannot Access the Internet?

Troubleshooting steps for no internet access.