Use adb to test that port 80 is redirected to 8080

I have added this entry to the init.qcom.post_boot.sh file:

iptables ­-t nat ­-A PREROUTING -­p tcp ­­-dport 80 -­j REDIRECT–­­to­-port 8080

So is there a way to test this is working via adb after the reboot sets the redirect?