Caution when using FireFox, you must have a dot (.) in the domain name. So for example, localhost.local will work and localhost will not allow FireFox to accept the cookies. This is because of RFC.
It seems that when you install Fedora F17 from the Parallels Store it will setup your keyring password as ‘parallels’, which will be different than the login password that you will have created when you setup the system.
In order to fix this you must go to Passwords and Keys,
Click on View -> By Keyring
Choose the Login keyring, right click -> Change
Then enter the ‘parallels’ as the password and change this to a password of your choice. Perhaps a good idea to keep this the same as your login password if you are doing development, testing and if you have a fairly strong password that is not likely to be guessed. Best practice would recommend that you have seperate password for keychain and login, but this is not always practical if you’re doing local development.
Hope this helps.
First you need to install a package.
Open terminal and run this command
sudo yum install system-config-securitylevel -y
then you can run
After making changes to your firewall you can run this comman to apply changes.
service iptables restart
By default, ssh listens for incoming connections on port 22. For a hacker to determine ssh is running on your machine, he’ll most likely scan port 22 to determine this.
To make the change, add a line like this to your /etc/ssh/sshd_config file:
Now change the list Port to anything you choose, except a port that is reserved for known services.