Can't access Oracle Cloud Always Free Compute http port
I wasted a lot of time on this.I wish I had found this first:https://docs.cloud.oracle.com/en-us/iaas/developer-tutorials/tutorials/apache-on-ubuntu/01oci-ubuntu-apache-summary.htm
configure ingress route for port 80
install ubuntu.
install apache/nginx
curl localhost
should bring back webpage in text format, however fails over internet.forget ufw firewall - this may cause issues with the Oracle firewall
use
$ sudo iptables -I INPUT 6 -m state --state NEW -p tcp --dport 80 -j ACCEPT$ sudo netfilter-persistent save
g) test your web page over internet
This is how I did it without directly meddling with iptables
.
First create an Ingress Rule
in Oracle Cloud vps's dashboard/Networking/Virtual Cloud Networks, for example, for port range 23-90
Next, install firewalld
in ubuntu (firewalld
is available in centos I think)
sudo apt-get install firewalldsudo systemctl enable firewalldsudo systemctl start firewalld
You only need to do this one time. It will still be there after a reboot.
Then, to open port 80:
sudo firewall-cmd --zone=public --add-port=80/tcp --permanent # or --add-service=http sudo firewall-cmd --reload
To verify:
sudo firewall-cmd --list-all
Output:
public target: default icmp-block-inversion: no interfaces: sources: services: dhcpv6-client ssh ports: 80/tcp ...
The same applies to opening other port(s). You can easily remove the port (--remove-port=80/tcp
+ a --reload
), refer to firewalld
docs.
To test from a remote computer
- run a web server at port 80 in Oracle Cloud vps if one is not already running, for example:
python3 -m http.server 80
- In a remote computer
curl ip-of-oc-vps:80
I also wasted a lot of time on Oracle Cloud Always Free vps' firewall. I hope this can save other people some time.
If you have an Internet Gateway and Route Table is also configured, you might still need to check the OS level firewall. If that is not configured, you might need to execute this command: sudo ufw allow http
For more details please see: How to Open/Allow incoming firewall port on Ubuntu