I have just seen that StrongSwan is installed and the service is enabled on my Raspberry Pi. But I have never used Strongswan before. Is there any way to research when it was installed? I just use the Raspi for OMV 5 with Portainer and various Docker containers. Should I be concerned that the package is installed without my active action?
EDIT:
I did some further investigation and found this commands in my .bash_history. This was approximately one year ago. Maybe I wanted to test something that I cannot remember. But interesting that despite those apt purge commands strongswan was still installed and running.
sudo apt install strongswan
sudo apt install strongswan-pki
sudo apt install libstrongswan-extra-plugins
sudo apt purge strongswan
sudo apt purge strongswan-pki
sudo apt purge libstrongswan-extra-plugins
Regarding the edit:
As far as I know your bash just tells you the purge commands were run but not if they were successful.
It also seems like the first purge would have removed all strongswan* package anyway so it sounds likely that you attempted to purge strongswan and decided not to. Maybe seeing the things that would be broken at the time you decided to reduce the scope of the great purge of strongswan in 2022 :)