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Manage Port Filtering for Outgoing Traffic

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LTE Modem LB1120 and LB1121 Manage Port Filtering for Outgoing Traffic Note You can enable and manage port filtering only when the modem functions in Router mode (see Manage Router Mode and Bridge Mode on page 23). As an added security measure, you can specify which services and applications (for example, HTTP, FTP, an email server) can access or are blocked from the Internet. Before you add a service or application, first determine which port number and protocol the service or application uses.You can usually find this information by contacting the publisher of the service or application or searching the Internet. The following sections provide information about managing port filtering for outgoing traffic: • Block Specific Services and Applications From Accessing the Internet and Allow All Other Services and Applications on page 42 • Allow Specific Services and Applications to Access the Internet and Block All Other Services and Applications on page 44 • View Services and Applications on the Blacklist and Remove a Service or Application From the List on page 45 • View Services and Applications on the Whitelist and Remove a Service or Application From the List on page 46 • Disable Port Forwarding on page 41 Block Specific Services and Applications From Accessing the Internet and Allow All Other Services and Applications You can set up a blacklist of services and applications that are blocked from accessing the Internet. All other services and applications are allowed to access the Internet. Note The blacklist and whitelist are mutually exclusive. You can enable either one or the other. IMPORTANT: For you to be able to set up a blacklist, the modem must be connected to the Internet. If the modem is not connected to the Internet, the configuration fails. To set up a blacklist of applications and services: 1. Launch a web browser from a device that is connected to the modem. The device can be a computer that is directly connected to the modem or a client from a router that is connected to the modem. 2. In the address field of your browser, enter http://192.168.5.1. The limited Dashboard page displays. Secure Your Network 42

Section	Page
Contents	3
1. Introduction and Hardware Overview	6
Introduction	7
Supported Mobile Broadband Bands	7
Package Contents	8
Install the Micro SIM Card	8
Top Panel With Status LEDs	11
Back Panel With Connectors, Buttons, and a Port	12
Modem Label	12
Position the Modem	13
Optional External Antenna	14
2. Get Started	15
Internet Connection Over Mobile Broadband	16
Connect a Computer, Switch, Hub, Router, or WiFi Router to the Modem	16
Connect a Computer to the LAN Port of the Modem	17
Connect a Router or WiFi Router to the LAN Port of the Modem	17
Access the Modem’s Web Pages for the First Time	17
Change the Language	19
3. Manage the Modem LAN Settings	20
Change the LAN Settings	21
Manage Router Mode and Bridge Mode	23
Change the DHCP Server Settings	24
Disable the DHCP Server	26
Enable the DMZ	27
Disable VPN Pass-Through	28
4. Manage the Mobile Broadband Connection	29
Manage Mobile Broadband Auto Connect Options	30
Manually Connect to or Disconnect From the Mobile Broadband Network	31
Manage APN Profiles for Mobile Broadband Connections	31
View APN Profiles or Add a Custom APN Profile	32
Select an APN Profile	34
Change an APN Profile	35
Remove an APN Profile	36
5. Secure Your Network	37
Change the Modem Password	38
Manage Port Forwarding for Incoming Traffic	38
Enable Port Forwarding and Add a Service or Application	39
Remove a Service or Application for Port Forwarding	40
Disable Port Forwarding	41
Manage Port Filtering for Outgoing Traffic	42
Block Specific Services and Applications From Accessing the Internet and Allow All Other Services and Applications	42
Allow Specific Services and Applications to Access the Internet and Block All Other Services and Applications	44
View Services and Applications on the Blacklist and Remove a Service or Application From the List	45
View Services and Applications on the Whitelist and Remove a Service or Application From the List	46
Disable Port Filtering	47
Manage SIM Card Security	48
Enable SIM Card Security	48
Enter the SIM PIN to Enable the Modem to Connect to the Internet	50
Personalize the SIM PIN	51
Disable SIM Card Security	52
Unblock the SIM Card With a PUK	54
6. Manage the Modem and Monitor Usage and the Network	56
Upgrade the Firmware of the Modem	57
Back Up and Restore the Modem Settings	58
Back Up the Settings	58
Restore the Settings	59
Return the Modem to Its Factory Default Settings	59
Use the Reset Button	60
Use the Modem’s Web Pages to Reset the Modem to Factory Defaults	60
View Monthly Data and Session Data Usage	61
Set a Plan Limit for the Data Counter	62
Change the Billing Cycle Counter or Reset the Data Counter	63
View Service Provider, Type of Service, and Signal Strength	63
View Account Details and Other Details About Your Modem	65
View Information About the Mobile Broadband Connection	66
Set Up SMS Alert Messages	67
Set the Data Limit for SMS Alert Messages	69
View Alerts	70
Turn Off the LEDs	71
7. Manage SMS Messages	72
Manage Incoming SMS Messages	73
Send an SMS Message	74
8. Frequently Asked Questions	75
What do I do when I can’t connect a device to the modem?	76
What do I do when I can’t access the Internet?	76
What do I do when the No Signal icon displays?	76
Why does the Signal Strength LED show only a few bars?	76
Why is the download or upload speed slow?	76
Can I connect multiple LAN devices to the modem?	77
How do I access the modem’s web pages?	77
What do I do if I forget my admin login password?	77
How do I disconnect from the mobile broadband network?	77
How do I find my computer’s IP address?	78
How do I find a device’s MAC address?	79
How do I find my mobile phone number?	81
Where can I find more information?	81
9. Alerts and Troubleshooting	82
Alert Messages	83
Quick Tips for Troubleshooting	83
Verify Normal Behavior With the LED Bars	84
Troubleshoot With the LED Bars	84
Power LED Bar Is Off	85
Power LED Bar Blinks Amber Fast and an Individual Signal and Strength LED Bar Lights Solid Green	85
LAN LED Is Off	86
You Cannot Log In to the Modem	86
Troubleshoot the Mobile Broadband Internet Connection	87
Obtain an Internet IP Address From Your Service Provider	87
Troubleshoot Internet Browsing	88
Changes Not Saved on the Modem’s Web Pages	88
TCP/IP Network Not Responding	88
Test the LAN Path to Your Modem	88
Test the Path From Your Computer to a Remote Device	89
A. Default Settings and Specifications	90
Factory Default Settings	91
Technical and Environmental Specifications	92
B. Wall-Mount the Modem	93
Position Your Modem	94

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Manage Port Filtering for Outgoing Traffic

You can enable and manage port filtering only when the modem functions in Router

mode (see

Manage Router Mode and Bridge Mode

on page 23).

Note

As an added security measure, you can specify which services and applications (for example, HTTP, FTP,

an email server) can access or are blocked from the Internet.

Before you add a service or application, first determine which port number and protocol the service or

application uses.You can usually find this information by contacting the publisher of the service or application

or searching the Internet.

The following sections provide information about managing port filtering for outgoing traffic:

•

Block Specific Services and Applications From Accessing the Internet and Allow All Other Services and

Applications

on page 42

•

Allow Specific Services and Applications to Access the Internet and Block All Other Services and

Applications

on page 44

•

View Services and Applications on the Blacklist and Remove a Service or Application From the List

page 45

•

View Services and Applications on the Whitelist and Remove a Service or Application From the List

page 46

•

Disable Port Forwarding

on page 41

Block Specific Services and Applications From Accessing the

Internet and Allow All Other Services and Applications

You can set up a blacklist of services and applications that are blocked from accessing the Internet. All other

services and applications are allowed to access the Internet.

The blacklist and whitelist are mutually exclusive.You can enable either one or the

other.

Note

IMPORTANT:

For you to be able to set up a blacklist, the modem must be connected to the

Internet. If the modem is not connected to the Internet, the configuration fails.

To set up a blacklist of applications and services:

Launch a web browser from a device that is connected to the modem.

The device can be a computer that is directly connected to the modem or a client from a router that is

connected to the modem.

In the address field of your browser, enter

http://192.168.5.1

The limited Dashboard page displays.

Secure Your Network

LTE Modem LB1120 and LB1121