IP Tables

to list all ip tables by chain

iptables -L --line-numbers

add iptable on line 

sudo iptables -I INPUT 1 -p tcp -s 10.190.195.123 --dport 22 -j ACCEPT
sudo iptables -I INPUT 2 -p tcp -s 10.190.227.123 --dport 22 -j ACCEPT

sudo iptables -I INPUT 3 -p tcp -s 10.190.195.123 --dport 8443 -j ACCEPT
sudo iptables -I INPUT 4 -p tcp -s 10.190.227.123 --dport 8443 -j ACCEPT

sudo iptables -I INPUT 5 -p tcp --dport 22 -j REJECT
sudo iptables -I INPUT 6 -p tcp --dport 8443 -j REJECT

delete existing chain line
iptables -D INPUT 2 
this will delete rule 2

to save the iptables
service iptables save