Description: In your OpenVPN Access Server, if activating a subscription license fails or you have one currently installed that stops working, you can follow this guide to troubleshoot these kinds of issues.
+ Before you begin, ensure you have the below tools installed on your Access Server server:
apt -y install dnsutils
apt -y install curl
apt-get -y install telnet
yum update -y
sudo yum -y install curl
dnf install bind-utils
dnf install telnet
+ Then, you can run the below commands one by one to verify your issue:
ping -c4 18.104.22.168
ping -w 1 google.com
telnet asb.sts.openvpn.net 443
curl -vvk https://asb.sts.openvpn.net
echo quit | openssl s_client -showcerts -connect asb.sts.openvpn.net:443 -servername asb.sts.openvpn.net | grep "OpenVPN Inc"
+ Also, check the status of your subscription from your server via "root" user privileges:
This gives you an idea of what your issue is. Some commons issues may be:
+ No internet on your Linux Machine.
+ No DNS Resolution.
+ Any border device such as ISP, Router, Firewall, Proxy, or NAT Device blocking or redirecting the traffic to another side/path.
If you need help interpreting the results from the above commands, please collect the above info and submit a ticket.