Hello Community, Thank you for posting the amazing script Perfect Server Automated ISPConfig 3 Installation on Debian 10 and Ubuntu 20.04^ I encountered a problem with the FTP while connecting to the website profile (22.214.171.124 is example IP address): Code: Status: Connecting to 126.96.36.199:21... Status: Connection established, waiting for welcome message... Status: Initializing TLS... Status: Verifying certificate... Status: TLS connection established. Status: Logged in Status: Retrieving directory listing... Command: PWD Response: 257 "/" is your current location Command: TYPE I Response: 200 TYPE is now 8-bit binary Command: PASV Response: 227 Entering Passive Mode (1,2,3,4,193,98) Command: MLSD Error: Connection timed out after 20 seconds of inactivity Error: Failed to retrieve directory listing Note: The SFTP/Shell worked fine... It turned out that at least for Ubuntu 20.04 it was necessary to add passive TCP ports to the PureFTPD configuration: Code: echo "40110 40210" > /etc/pure-ftpd/conf/PassivePortRange service pure-ftpd-mysql restart Basically it adds the passive ports to the /etc/pure-ftpd/conf/PassivePortRange config file and restarts the PureFTPD. I suppose this should be added as step after the "4. Setting up the firewall" in that Perfect Server guide.... Credit goes to till in another forum thread^ Note: I suppose this has nothing to do with my IPv6 disabled config I mentioned here^.