How to Open a Port in Your Firewall

11 thoughts on “How to Open a Port in Your Firewall”

1. This may help somebody else but this is how I managed to open a port in my firewall. This should apply to all systems that use firewalld, and going by InMotion Hosting’s content, it looks like this should be the case for most people.

   Run this command as root to open up port 80.

   firewall-cmd –permanent –zone=public –add-port=80/tcp

   It should respond with ‘success’. The first time I tried it, I got an error, and I had to restart my server to fix it. (AMP -> Manage My Cloud Server -> Restart Server)

   This command updates the config, but to apply it, you need to run this:

   firewall-cmd –reload

   Unfortunately, the reload command always hangs/crashes my server, and if that’s what happens for you, you’ll have to go to AMP -> Manage My Cloud Server and restart it.

   Now you should be good to go! Try telnet (telnet 80) to verify that the port has been opened. It should not say ‘Connection Refused’.

   You can check what ports have been opened for the public zone by running:

   firewall-cmd –zone=public –list-ports

   PS: firewall-cmd docs say that running firewall-cmd –state should tell you if the firewall is running or not. But for me, it always returns ‘not running’, when the firewall clearly is. But I’m no Linux sys admin and I might be missing something. Hope this helps someone though 🙂

2. There is no apf installed on my cloud server. I have ufw and opened port 443 but I’m still blocked somewhere. Can you create an updated support topic, or update this one?

   1. Hello and thanks for contacting us. We’ll be releasing content for Firewalld in the near future.

      1. Is there a timeline for this? I’ve tried to follow the man pages for firewall-cmd to add ports, but I just get an opaque error. I think I’m missing some information about how Inmotion is setting up the firewall that should be documented somewhere.

      2. Sorry for the late reply. Here’s our article on configuring Firewalld and UFW. Also, don’t forget to check your local network firewall.

3. I can’t connect putty it says: “Connection refused” and i don’t have any port open on my VPS and i don’t know how i do open them?

   1. Hello Stw,

      The instructions above will tell you how to open a port, however before you can connect to your VPS via Putty, you need to ensure you have added your IP to the firewall. This is the most common issue when first trying to connect to a VPS.

      Kindest Regards,
      Scott M

   2. my Server work well at first, but then it started to say Network error: Connection refused on PuTTY and WinSCP ports are closed and I can not open them having any access on my server .. I have had this problem for more than 2 weeks.

   3. Hello Stw,

      Thank you for contacting us today. If you are hosted with us, contact Live Support for assistance regaining access to your server.

      Alternately, if you have cPanel/WHM available there are plugins available that allow you to make changes from the interface.

      Otherwise, you may have to escalate to someone who has access, or can physically login to the server and make changes.

      Thank you,
      John-Paul

   4. I do not find /etc/apf/conf.apf on my dedicated server. I see the /etc directory, but no /etc/apf subdirectory.

   5. Hello parknpool_marc,

      Thank you for contacting us. Ensure you are logged as root in order to access that level of the file system.

      Thank you,
      John-Paul

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