IPTables

To List:

sudo iptables -L -v -n

To Add:

 sudo iptables -A INPUT -p tcp -s 200.200.200.200 --dport 1433 -j ACCEPT

To Delete:

sudo iptables -L INPUT --line-numbers

sudo iptables -D INPUT 5

To Save:

sudo iptables-save > /etc/iptables/rules.v4

However I was getting permissions error try to save:

sudo bash -c "iptables-save > /etc/iptables/rules.v4"

Did the job




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