Blocking Internet Access for LAN Clients

Introduction

This article contains instructions o how to block Internet access for LAN clients using a Teltonika-Networks device.

Blocking WAN (Internet) access

Access between your end device and other networks is controlled by your network device's (router, gateway) firewall. Therefore, in order to set networks access limitations you will need to modify the firewall configuration. In the Teltonika-Networks devices this can be done over the Network → Firewall page.

To access the Firewall page, you must first switch to 'Advanced' WebUI mode:

All clients

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• To block all LAN clients from accessing the Internet, go to the Network → Firewall → Traffic Rules page.
• Scroll down to the 'Add New Forward Rule' section and create a rule such as this:
  1. Create a custom name for the rule.
  2. Set 'Source Zone' to lan.
  3. Set 'Destination Zone' to wan.
  4. Click 'Add'.
  File:Networking device faq blocking internet access for lan clients 1.png
• When the rule is created, you will be redirected to its configuration page. While there, set up the rule like this:
  1. Set 'Protocol' to Any.
  2. Set 'Action' to Drop.
  File:Networking device faq blocking internet access for lan clients 2.png
• If you later wish to undo the changes, you can delete the rule or turn it off.
  

Single client

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• To block a single LAN client from accessing the Internet, go to the Network → Firewall → Traffic Rules page.
• Scroll down to the 'Add New Forward Rule' section and create a rule such as this:
  1. Create a custom name for the rule.
  2. Set 'Source Zone' to lan.
  3. Set 'Destination Zone' to wan.
  4. Click 'Add'.
  File:Networking device faq blocking internet access for lan clients 1.png
• When the rule is created, you will be redirected to its configuration page. While there, set up the rule like this:
  1. Set 'Protocol' to Any.
  2. Set 'Source address' to the the one that you wish to block.
  3. Set 'Action' to Drop.
  
• Alternatively, you can specify an IP address/netmask combination to include a range of addresses. For example, specifying 192.168.1.100/30 as the 'Source address' would include IP addresses from 192.168.1.100 to 192.168.1.103.
  
• If you later wish to undo the changes, you can delete the rule or turn it off.
  

Blocking specific site or network

• To block access to a website for LAN clients, go to Services → Web Filter.
• Set the main parameters of Web Filter under the 'Site Blocking Settings' section.
  1. Turn Web Filter on.
  2. Set 'Mode' to Blacklist.
  
Alternatively, you may set 'Mode' to Whitelist to allow access only to specific sites and block access to all others.
• Specify sites that you wish to block under the 'Site Blocking Rules' section.
  1. Click 'Add' to create a new entry in the list.
  2. Specify a 'Hostname' that you wish to block.
  3. Don't forget to save the changes.