Comments on: Linux Open Port 80 (HTTP Web Server Port)

By: Amani Musomba

Amani Musomba — Wed, 08 Feb 2012 05:48:15 +0000

I used the below commands to open port 443 via iptables from the command line.

/sbin/iptables -A INPUT -m state –state NEW -p tcp –dport 443 -j ACCEPT
/etc/init.d/iptables save
/etc/init.d/iptables restart

and it worked for me.

By: Soj

Soj — Fri, 26 Aug 2011 03:23:41 +0000

I have used the following to open port 80 via iptables:

iptables -A INPUT -p tcp -m state –state NEW,ESTABLISHED -j ACCEPT –dport 80

By: PHP Guru

PHP Guru — Wed, 27 Apr 2011 06:29:45 +0000

This is great and worked perfectly! Thank you for posting this. I was wondering if you know the way to do the same thing from the command line (without vi) so that it can be scripted. I found on some other blog

iptables -A INPUT -p tcp --dport 80 -j ACCEPT
service iptables save

but when I tried that it didn’t work and when I checked /etc/sysconfig/iptables there’s no rule for port 80 like I expected.

By: sanjay

sanjay — Thu, 17 Feb 2011 06:22:46 +0000

Firstly Many thank you to you all…

Awesome…and Great community on earth and heartily thank you again for all your time and expertise.

I have used below and it works…

iptables -I RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT

By: milniki za sanitarije

milniki za sanitarije — Wed, 13 Oct 2010 12:58:34 +0000

Thank you for this one, I really needrf this for my Apache config :)

By: Lance Olsen

Lance Olsen — Fri, 10 Sep 2010 19:01:11 +0000

This almost worked for me. Using -A was a problem however, because the rule needed to be insterted at the top because of other rules I had in place. If the above doesn’t work for you, use the following at the command line:

iptables -I RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT

By: james stewart

james stewart — Mon, 20 Jul 2009 09:10:19 +0000

Thanks for this. Being used to debian/ubuntu I’d forgotten where to go when setting up a CentOS box.

@gabriel – you might want to try moving the rule further up in the file. I put it as the last rule but that didn’t work. Moving it further up (in particular before “-A RH-Firewall-1-INPUT -j REJECT –reject-with icmp-host-prohibited”) seemed to do the trick.

By: gabriel

gabriel — Sat, 18 Jul 2009 18:34:56 +0000

I tried this and restarted the ipchains with service iptables restart

but it will still not work.

any ideas?