Best Pratices for OS, FW and SELinux Coursework

Best Pratices for OS, FW and SELinux - Coursework Example Similarly, â€Å"yum update† command will be appropriate in case of a need to update an entire system (Membrey, Verhoeven & Angenendt, 2009). The yum package that comes with CentOS entails scripts for performing system-wide updates on daily basis. Users would need to enter the command su -c /sbin/chkconfig --level 345 yum on; /sbin/service yum start. This command should be followed by the root password in case a need arises to activate the daily automatic update. It is necessary that users create copies of computer files for use in cases where the original files diminish through ways like computer crash or theft (IBM, 2013). Accidents are inevitable. Therefore, it is crucial that users regularly store work documents within a backed up network server. Safety of the operating system will be easier to attain if certain password protection mechanisms are put in place. Examples of such mechanisms include regular change of passwords, users stopping the habit of sharing passwords or login ID (s) and the administrator of the operating system under use ensuring that the systems are accessed only after users have supplied matching combinations of the login credentials, automatic disabling of user accounts in case of login attempts that go past six. In case of the highly vulnerable environments, it would be appropriate using Kerberos. Kerberos will employ strong encryption coupled with complex ticket granting algorithm in authenticating users on a network and to permit streams of data over IP networks. This approach will fit environments like colleges where the implementation of other security mechanisms has remained to be a challenge. Organizations will often need firewalls to protect the confidential information from unauthorized and malicious users. Even as organizations use different access control features embedded in firewall systems to attain system