Devolo Magic 2 wifi is a series of products made to create a mesh wifi network in your home with multiple wifi accesspoints connected to the router over the powerline network. It can sometimes be difficult to obtain a reliable, stable connection of the powerline as noise in the powerline can interfere. This is how […]
Author Archive for: stefan
About Stefan Helander
I was born a nerd! As a child I was fond of fiddling with all kind of thechnical stuff, discovering how things work and often fixing them. As a 6 year old I fixed my grandmothers 220 volts wiring.
The interest in technical stuff grown even bigger in the teenage years where I got my amateur radio license and developed a keen interest in computers.
Today I am proud to be a nerd. It is a part of my profession.
To all of you nerds and geeks out there - remember that nerd is the new sexy! :)
A client was about to renew one of their SSL certificates and the provider requested them to add a CAA DNS-record for the provider. The client already had one CAA DNS-record for another provider in their domain, becuase they where using different providers of SSL certificates for different purposes in their organization. The CAA DNS-record […]
If the module selection list in the module assignment is broken, i.e. the tool for select / deselect of sub menu items is missing and the layout is generally garbled, the cause can be a menu item in the menu above that is listed as a child item but has no parent. Go the the […]
The easiest way to get multiple time conditions in FreePBX is to daisy chain them. A common scenario is to have a standard time condition for normal opening hours and in addition to that, time conditions for holidays occuring on normal weekdays, like christmas and new year for example. Create one time group for normal […]
Investigating the error log reveals that the problem has to do with All in one WP security and firewall plugin: The problem has been solved in All in one WP security and firewall plugin version 4.4.8, so it means your WordPress site was updated to 5.7 prior to updating the plugins. To solve it, you […]
I made a copy of the file welcome_email_en.txt from /usr/local/ispconfig/server/conf/mail to /usr/local/ispconfig/server/conf-custom/mail and named it welcome_email_se.txt and translated the content of the file, as I wanted my clients to be greeted to their new email account in Swedish. However, the client was still receiving the welcome email in English. It turned out that the configuration […]
On one location where I am using a Teltonika RUT-950 / RUT-240 router, the IPSec VPN can only be connected in one direction which is outbound. Normally both ends can initiate the connection. The reason for this is that the router is connecting using 3G/4G and the provider only allows outbound traffic (i.e. “surf the […]
To prevent ssh from disconnecting while idle, add the following to ~/.ssh/config: This solution is alse useable in any Linux/BSD/*nix environment. If you want to implement this not only on your own user, as a sysadmin, add the above to /etc/ssh/ssh_config instead.
This is how I configured IPv6 address received dynamically from my ISP. This is not to be confused with using a 6to4 tunnel service which is something completely different. In this case, a real IPv6 address is received using DHCP6 or SLAAC from the ISP. In this setup the IPv6 LAN side is bridged with […]
WP displays “Connection Information” and a text “To perform the requested operation, WordPress needs to access your web server. Please enter your FTP credentials to proceed. If you do not remember your credentials, you should contact your web host.” To solve this, add the following line to your wp-config.php: If that doesn’t solve the problem […]