Block access for a program This is an important option for users who want full control of their PCs, allowing access only for the programs they trust, and blocking everything else. Ensure that blocking a program does not interrupt your network connection or any other program that requires Internet access to function properly. Net Nanny has a web-centric and multi-platform approach to website blocker software that provides the best web filtering features. It is also an affordable and reliable tool to block dangerous websites online. With Net Nanny, the user can easily monitor and control the internet content and access all the web pages with remote monitoring. Type in '127.0.0.1 ' and then the address of the site you want to block, making sure to keep a space between the numbers and the address. For example, '127.0.0.1 facebook.com' will block Facebook.
Overview
MAC address filtering is more secure than IP address filtering, as MAC addresses are rarely changed. In an environment with DHCP, the IP addresses of hosts change dynamically, so filtering MAC addresses is more reliable and feasible to identify and filter the source and destination of network traffic.
In a wireless environment (WLAN), the most common security measure to prevent unwanted network access is MAC address filtering. Here, the router is configured to only accept traffic from the specific MAC addresses, and whitelisted devices are assigned new IP addresses through DHCP. This way, the hosts retain their ability to communicate with the Network. Any attempt to communicate by masquerading the IP address is blocked as the attacker’s MAC address will not match with the MAC address of the whitelisted devices.
How to block access based on MAC address
- Go to Host and Service > MAC Host and click Add to add a MAC host. Enter the parameters as shown in the table below (Please enter MAC host that you want to block).
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Parameters | Value | Description |
Name | MAC_Host | Specify a name to identify the Group. |
Type | MAC Address | Specify the MAC Type. |
MAC Address | 00:0c:29:72:D5:31 | Specify the MAC Address of the host. |
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- Click Save to add the MAC host.
- Navigate to Firewall, and click + Add Firewall Rule. Select User/Network Rule to add a new rule as shown in the image below.
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- Click Save to add the rule.
- This is blocks entrie IPv4 traffic for the MAC host 00:0c:29:72:D5:31 originating from LAN and destined for WAN.