ZyXEL Communications LTE5388-M804 User Manual

Chapter 13 Firewall
LTE Series User’s Guide
193
•WAN to Router
By default the Zyxel Device stops computers on the WAN from managing the Zyxel Device. You could
configure one of these rules to allow a WAN computer to manage the Zyxel Device.
Note: You also need to configure the remote management settings to allow a WAN
computer to manage the Zyxel Device.
You may define additional rules and sets or modify existing ones but please exercise extreme caution in
doing so.
For example, you may create rules to:
• Block certain types of traffic, such as IRC (Internet Relay Chat), from the LAN to the Internet.
• Allow certain types of traffic, such as Lotus Notes database synchronization, from specific hosts on the
Internet to specific hosts on the LAN.
• Allow everyone except your competitors to access a web server.
• Restrict use of certain protocols, such as Telnet, to authorized users on the LAN.
These custom rules work by comparing the source IP address, destination IP address and IP protocol
type of network traffic to rules set by the administrator. Your customized rules take precedence and
override the Zyxel Device’s default rules.
13.7.2 Guidelines For Security Enhancement With Your Firewall
1 Change the default password via the Web Configurator.
2 Think about access control before you connect to the network in any way.
3 Limit who can access your router.
4 Don't enable any local service (such as telnet or FTP) 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.
13.7.3 Security Considerations
Note: Incorrectly configuring the firewall may block valid access or introduce security risks to
the Zyxel Device and your protected network. Use caution when creating or deleting
firewall rules and test your rules after you configure them.
Consider these security ramifications before creating a rule:

ZyXEL Communications LTE5388-M804 Specifications

General

DSL WAN	No
Ethernet WAN	Yes
WAN connection type	RJ-45
Wi-Fi band	Dual-band (2.4 GHz / 5 GHz)
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Top Wi-Fi standard	Wi-Fi 5 (802.11ac)
WLAN data transfer rate (max)	1733 Mbit/s
WLAN data transfer rate (first band)	300 Mbit/s
Networking standards	IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
4G standard	LTE-TDD & LTE-FDD
3G standards	HSPA+, HSUPA, WCDMA
UMTS bands supported	850, 900, 1800, 2100 MHz
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
MAC address table	64 entries
Security algorithms	WPA, WPA2
Supported network protocols	IPv4/IPv6
Product type	Tabletop router
Product color	Grey, White
LED indicators	LTE, Power, USB, WLAN
Power source type	DC
Power consumption (typical)	24 W
Certification	CE, 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 included	LAN (RJ-45), Phone (RJ-11)
Package type	Box
Package depth	170 mm
Package width	247 mm
Package height	120 mm
Package weight	1600 g
Harmonized System (HS) code	85176990

Weight and Dimensions

Width	100 mm
Height	205 mm
Weight	599 g