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Is there a way to filter out ARP traffic?
With the arp command we can query the current list of known ARP addresses. Arptables can block traffic by filtering out the IP. So let’s query the arp list again, now in numeric format.
How to use Raspberry Pi as router and content filter?
Open the /etc/e2guardian/lists/bannedsitelist file, and under the Blanket SSL/CONNECT block (since these websites use https instead of plain http ), add the following lines: Now reload the E2guardian service using the command sudo service e2guardian reload ( you will have to run this command every time you modify the configuration files ).
Can a Raspberry Pi 3 be a WiFi hotspot?
Prior experience with command lines and firewalls is a bonus. We will be using the Raspberry Pi 3 as a router cum content filter. For this, we will need two network interfaces on it – one to connect to the internet, and the other to act as a WiFi hotspot for our other devices to connect to.
Is there a way to flush the ARP cache?
Flushing the full ARP cache can be done with ip utility: Arptables is a very powerful utility to filter traffic and avoid an unexpected router taking over our connectivity. However, keep in mind that connectivity is not fully blocked.
How to check if ARP is enabled or not?
As far as I know the useage of arp filtering is not the default found in most Linux distributions, although most do include the kernel support for arptables. You can typically check for kernel support with modinfo arp_tables.
What does arptables do in the Linux kernel?
arptables is a method in the Linux kernel to manage packet filtering on arp packets comparable to the iptables command that manages packet filtering on TCP and UDP packets.
How to set up arptables utility in Linux?
The arptables utility is easy to set-up, as the main functionality is already implemented in the Linux kernel. Just install the arptables package on your favorite Linux distribution.