Firewall Builder iptables compile error – failed to start program

Following error was reported when compiling the Firewall Builder rulesets for iptables. Compiling rule sets for firewall: xx1firewall fwb_ipt -v -f /home/user/xx1firewall.fwb -d /home/user -o /home/user/xx1firewall.fw -i id8922X6568 Error: Failed to start program fwb_ipt Last error: The process failed to start Current state of QProcess: The process is not running.

To resolve this error, install . . . → Read More: Firewall Builder iptables compile error – failed to start program

Things to do after Fedora Linux install

So you have now upgraded to the latest Fedora Linux Operating System? Congratulations. You will now need to learn how to use the Gnome 3 desktop environment and also customize your desktop and install additional software. Below is a list of things you can do after you have install Fedora 16 on your computer.

Improve . . . → Read More: Things to do after Fedora Linux install

Manage services on Fedora 16 using systemctl

With ntsysv no more the tool to manage services, and chkconfig being used to manage only legacy services, Fedora 16 now has a new command, systemctl.

To list all services running on the Fedora 16 system: # systemctl -t service <enter>

To stop a service on the Fedora 16 system: # systemctl stop sendmail.service <enter>

. . . → Read More: Manage services on Fedora 16 using systemctl

Start a service on Fedora 16 using systemctl

To start a service on the Fedora 16 system: # systemctl start sendmail.service <enter>

Disable a service on Fedora 16 using systemctl

To disable a service from starting up when you reboot the Fedora 16 system: # systemctl disable sendmail.service <enter>

Stop a service on Fedora 16 using systemctl

To stop a service on the Fedora 16 system: # systemctl stop sendmail.service <enter>

Restore Virtual Machines using VirtualBox

Save your VirtualBox virtual machine to a .OVA file. It will be easy to restore back.

systemd on Fedora 15 – No more ntsysv

Fedora 15 uses a new system / service called systemd. ntsysv is not available to enable or disable services. You could also use: # system-config-services <enter> system-config-services shows you a GUI from where you can select the services to enable or disable.

Alternatively, if you are comfortable with the command line, perform following to disable . . . → Read More: systemd on Fedora 15 – No more ntsysv

Force SSH to ask password when using keys for authentication

This is for those of you who want to know how to force SSH to ask for a password (not the user login password), the one used to create the public and private key pair using OpenSSH.

You can force SSH to ask for the key password by modifying the files /etc/ssh/sshd_config and /etc/ssh/ssh_config. In . . . → Read More: Force SSH to ask password when using keys for authentication

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