ISPConfig

A collection of tutorials related to the ISPConfig Web Hosting Control Panel.

How to fix "dovecot: master: Error: socket() failed: Address family not supported by protocol" errors

botond published 2023/02/25, Sat - 08:03 time
How to fix "dovecot: master: Error: socket() failed: Address family not supported by protocol" errors | Linux portal
After updating ISPConfig, not all services restarted. In this case, the Dovecot POP3/IMAP mail server and even Postfix threw warnings. Although we fixed these errors earlier, our settings were overwritten again during the ISPConfig update. In this troubleshooter, on the one hand, we fix "Address family not supported by protocol" type errors that cause the service to be inoperable, and we also make their permanent settings so that they remain even after further ISPConfig updates.

How to upgrade our perfect server based on Debian 10 (Buster) to Debian 11 (Bullseye) (page 3)

botond published 2023/01/31, k - 11:30 time
How to upgrade our perfect server based on Debian 10 (Buster) to Debian 11 (Bullseye) (page 3) | Linux portal
Another era has come again, when our Debian 10 (Buster) server has also run out of time, and it has become a burning task to do something about this problem. In this tutorial, we will upgrade a perfect Debian 10 (Buster) server to Debian 11 (Bullseye). On this page, we review the basic system as well as our higher-level server services and make the necessary subsequent settings.

How to upgrade our perfect server based on Debian 10 (Buster) to Debian 11 (Bullseye)

botond published 2023/01/31, k - 11:10 time
How to upgrade our perfect server based on Debian 10 (Buster) to Debian 11 (Bullseye) | Linux portal
Another era has come again, when our Debian 10 (Buster) server has also run out of time, and it has become a burning task to do something about this problem. In this tutorial, we will upgrade a perfect Debian 10 (Buster) server to Debian 11 (Bullseye). On this page, we review the necessary tasks before the update, which we use to prepare our system for the new main version.

How to build and arming our ISPConfig3 server and how to secure our control panel, main services and websites with Let's Encrypt SSL (page 3)

botond published 2023/01/20, p - 23:19 time
How to build and provision our ISPConfig3 server and how to secure our control panel, main services and websites with Let's Encrypt SSL (page 3) | Linux portal
With the help of the ISPConfig control panel, we can easily manage the websites on our server, as well as other web services. In this description, we will review how to build and provision our ISPConfig3 server, as well as how to set up free SSL certificates issued by Let's Encrypt for the control panel, main services and our websites. On this page, we check the web services and other components running on the server, then we set up the Let's Encrypt SSL certificates for the control panel and the required services and websites. Finally, we perform a few more fine-tuning tasks and eliminate any problems that may arise.

How to build and arming our ISPConfig3 server and how to secure our control panel, main services and websites with Let's Encrypt SSL

botond published 2023/01/20, p - 23:14 time
How to build and provision our ISPConfig3 server and secure our control panel, main services and websites with Let's Encrypt SSL | Linux portal
With the help of the ISPConfig control panel, we can easily manage the websites on our server, as well as other web services. In this description, we will review how to build and provision our ISPConfig3 server, as well as how to set up free SSL certificates issued by Let's Encrypt for the control panel, main services and our websites. On this page, we will install the basic system, the ISPConfig control panel with the necessary components, and then check the existing web interfaces and services.

How to upgrade your perfect Debian9 (Stretch) server to Debian 10 (Buster) (page 3)

botond published 2022/01/22, Sat - 23:03 time
How to upgrade your perfect Debian9 (Stretch) server to Debian 10 (Buster) (page 3) | Linux portal
The operating system running on our Debian-based web servers will become obsolete over time, so over time it will be necessary to completely upgrade the distribution. In this description, we will perform a complete upgrade of a Debian 9 (Stretch) web server to Debian 10 (Buster). There are many services on the server that will also be updated. On the third page of the description, we will perform the post-upgrade tasks, during which we will check the entire system and the services running on it.

How to upgrade your perfect Debian9 (Stretch) based server to Debian 10 (Buster)

botond published 2022/01/22, Sat - 23:01 time
How to upgrade your perfect Debian9 (Stretch) based server to Debian 10 (Buster) Linux portal
The operating system running on our Debian-based web servers will become obsolete over time, so over time it will be necessary to completely upgrade the distribution. In this description, we will perform a complete upgrade of a Debian 9 (Stretch) web server to Debian 10 (Buster). There are many features on the server that will also be updated. On the first page of this description, we will perform the pre-upgrade steps to prepare your system for a secure upgrade.

How to deal with "Possible attack detected. This action has been logged." error message in our ISPConfig control panel

botond published 2021/03/23, k - 09:19 time
How to deal with "Possible attack detected. This action has been logged." error message in our ISPConfig control panel Linux portal
ISPConfig uses a variety of protection systems to keep it secure, including IDS (Intrusion Detection System) technology. However, this setting may be too sensitive and disable us from the control panel as well. In this little troubleshooter, we'll see what we can do if our ISPConfig control panel doesn't allow us, but instead gets a "Possible attack detected. This action has been logged." error message.
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