Open port 443 by adding a rule to iptables (Ubuntu)

Question

Im new to ubuntu and using ubuntu 12.04 server. When I run nmap localhost, I get the following output:

Not shown: 997 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
80/tcp   open  http
3306/tcp open  mysql

This means that port 443 (https) is closed. I want to open it. So I did the following:

I executed the command

sudo iptables -A INPUT -p tcp --dport 443 -j ACCEPT

And to save the changes, I saved the file using sudo sh -c "iptables-save > /etc/iptables.rules"

and then I added the following lines to etc/network/interfaces:

pre-up iptables-restore < /etc/iptables.rules
post-down iptables-save > /etc/iptables.rules

After rebooting my system, I ran sudo iptables -L, and the line

Chain INPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:https

was visible.

However, now when I start nmap localhost, I still do not see 443 as open.

Please, help!

Answer 1

, 443 . : sudo nc -lk 443, nmap localhost. iptables.