Nftables

Install

• apt-get install nftables

Create a basic IPv4 table

• nft add table inet filter

List that table

• nft list table inet filter

table inet filter {
}

Create a chain for input traffic IPv4

• nft add chain inet filter input { type filter hook input priority 0\; }

A rule to check that all is fine (IPv4)

• nft add rule inet filter input counter accept

List that table

• nft list table inet filter

table inet filter {
	chain input {
		type filter hook input priority 0; policy accept;
		counter packets 47 bytes 3100 accept
	}
}

Flush rules in chain filter/input

• nft flush chain inet filter input

Delete the chain filter/input

• nft delete chain inet filter input

Delete the table filter

• nft delete table inet filter