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ZyXEL Communications LTE5388-M804 User Manual

ZyXEL Communications LTE5388-M804
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LTE Series User’s Guide
162
CHAPTER 10
Network Address Translation
(NAT)
10.1 Overview
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a host in a
packet, for example, the source address of an outgoing packet, used within one network to a different
IP address known within another network.
10.1.1 What You Can Do in this Chapter
Use the Port Forwarding screen to configure forward incoming service requests to the servers on your
local network (Section 10.2 on page 163).
Use the Port Triggering screen to add and configure the Zyxel Device’s trigger port settings (Section
10.3 on page 166).
Use the DMZ screen to configure a default server (Section 10.4 on page 169).
Use the ALG screen to enable or disable the SIP ALG (Section 10.5 on page 170).
Use the Address Mapping screen to enable and disable the NAT Address Mapping in the Zyxel
Device(Section 10.6 on page 171).
Use the Sessions screen to limit the number of concurrent NAT sessions each client can use(Section
10.7 on page 173).
10.1.2 What You Need To Know
The following terms and concepts may help as you read this chapter.
Inside/Outside and Global/Local
Inside/outside denotes where a host is located relative to the Zyxel Device, for example, the computers
of your subscribers are the inside hosts, while the web servers on the Internet are the outside hosts.
Global/local denotes the IP address of a host in a packet as the packet traverses a router, for example,
the local address refers to the IP address of a host when the packet is in the local network, while the
global address refers to the IP address of the host when the same packet is traveling in the WAN side.
NAT
In the simplest form, NAT changes the source IP address in a packet received from a subscriber (the
inside local address) to another (the inside global address) before forwarding the packet to the WAN
side. When the response comes back, NAT translates the destination address (the inside global address)
back to the inside local address before forwarding it to the original inside host.

Table of Contents

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Questions and Answers:

ZyXEL Communications LTE5388-M804 Specifications

General IconGeneral
DSL WANNo
Ethernet WANYes
WAN connection typeRJ-45
Wi-Fi bandDual-band (2.4 GHz / 5 GHz)
Wi-Fi standards802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Top Wi-Fi standardWi-Fi 5 (802.11ac)
WLAN data transfer rate (max)1733 Mbit/s
WLAN data transfer rate (first band)300 Mbit/s
Networking standardsIEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
Ethernet LAN data rates10, 100, 1000 Mbit/s
Ethernet LAN interface typeGigabit Ethernet
4G standardLTE-TDD & LTE-FDD
3G standardsHSPA+, HSUPA, WCDMA
UMTS bands supported850, 900, 1800, 2100 MHz
USB 2.0 ports quantity1
Ethernet LAN (RJ-45) ports2
MAC address table64 entries
Security algorithmsWPA, WPA2
Supported network protocolsIPv4/IPv6
Product typeTabletop router
Product colorGrey, White
LED indicatorsLTE, Power, USB, WLAN
Power source typeDC
Power consumption (typical)24 W
CertificationCE, WEEE, RoHS, HSF
Storage temperature (T-T)-30 - 70 °C
Operating temperature (T-T)0 - 40 °C
Storage relative humidity (H-H)5 - 95 %
Operating relative humidity (H-H)10 - 90 %
Cables includedLAN (RJ-45), Phone (RJ-11)
Package typeBox
Package depth170 mm
Package width247 mm
Package height120 mm
Package weight1600 g
Harmonized System (HS) code85176990
Weight and Dimensions IconWeight and Dimensions
Width100 mm
Height205 mm
Weight599 g

Summary

CHAPTER 1 Introduction

1.2 Application for the Zyxel Device

Explains the Zyxel Device's use for Wireless WAN, Wireless LAN, and Internet Access.

1.5.4 The RESET Button

Explains the RESET button function for restoring factory defaults and troubleshooting.

CHAPTER 2 The Web Configurator

2.1.1 Access the Web Configurator

Provides instructions to access and log into the Zyxel Device's Web Configurator.

CHAPTER 3 Quick Start

3.2 Quick Start Setup

Guides users to initiate the Quick Start wizard for basic device configuration.

3.4 The Internet Connection Setup

Details selecting and configuring the Zyxel Device's Internet connection mode.

CHAPTER 4 Tutorials

4.2 Set Up a Wireless Network Using WPS

Demonstrates setting up a secure wireless network using WPS methods.

4.6 Configure a Firewall Rule

Details enabling the firewall and creating rules to protect the network from attacks.

4.8 Upgrade Firmware on the Zyxel Device

Guides uploading new firmware to enhance Zyxel Device features and performance.

4.11 Connect to the Internet

Provides a tutorial for establishing an Internet connection using a SIM card.

CHAPTER 5 Connection Status

CHAPTER 6 Broadband

6.2 Broadband

Allows changing Internet access settings and viewing configured WAN services.

6.2.1 Add/Edit Internet Connection

Guides configuring a WAN connection, including general, IP, and routing features.

6.6 Cellular SIM Configuration

Guides on entering a SIM card PIN to prevent unauthorized use.

CHAPTER 7 Wireless

7.2 General Settings

Guides enabling Wireless LAN, entering SSID, and selecting security like WPA2-PSK.

7.6 WPS

Guides configuring WiFi Protected Setup (WPS) for quick wireless network setup.

CHAPTER 8 Home Networking

8.2 LAN Setup

Guides setting the LAN IP address, subnet mask, and DHCP settings.

CHAPTER 10 Network Address Translation (NAT)

10.2 Port Forwarding Overview

Explains directing incoming service requests from the Internet to local network servers.

CHAPTER 13 Firewall

13.3 Firewall General Settings

Guides setting the firewall security level for restricting Internet activities.

13.6 DoS

Covers activating protection against Denial of Service (DoS) attacks.

CHAPTER 14 MAC Filter

14.2 MAC Filter

Guides enabling MAC Address Filter and adding hostnames/MAC addresses for access control.

CHAPTER 15 Parental Control

15.2 The Parental Control Screen

Guides enabling parental control and viewing rules and schedules.

15.2.1 Add New Parental Control Rule

Explains configuring restricted access schedules and URL filtering for user control.

CHAPTER 26 User Account

26.2 User Account

Guides creating and managing user accounts, including privileges.

26.2.1 User Account Add/Edit

Details adding/modifying user account names, passwords, retry times, and privileges.

CHAPTER 35 Troubleshooting

35.1 Overview

Offers suggestions for solving potential problems encountered with the Zyxel Device.

35.2 Power and Hardware Connections

Provides steps for issues where the Zyxel Device does not turn on.

35.3 Zyxel Device Access and Login

Offers solutions for forgotten IP addresses or passwords, and login screen access issues.

35.4 Internet Access

Guides troubleshooting Internet access issues, including slow or intermittent connections.

35.7 SIM Card

Offers solutions for SIM card detection issues and invalid SIM card alerts.

35.8 Cellular Signal

Guides positioning the Zyxel Device for optimal cellular signal strength and quality.

APPENDIX B IPv6

IPv6 Addressing

Explains the structure and format of IPv6 addresses, including abbreviation rules.

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