How to install ufw or what other way to set up iptables android?

Question

Android

You need to do something like this:

# ok icmp codes
-A ufw-before-input -p icmp --icmp-type destination-unreachable -j ACCEPT
-A ufw-before-input -p icmp --icmp-type source-quench -j ACCEPT
-A ufw-before-input -p icmp --icmp-type time-exceeded -j ACCEPT
-A ufw-before-input -p icmp --icmp-type parameter-problem -j ACCEPT
# -A ufw-before-input -p icmp --icmp-type echo-request -j ACCEPT

But in what way in android I don’t understand yet. Thanks everyone for the replies