Question

There are local administrators for each of the departments, excluding the IT. These local administrators will use the local administrator account on each department. These local administrators will use a local account in each department for purposes of installing applications, updating/patching software, etc. This local account is not the root account, but a user account that is member of the administrators group.

The Sales and Software Development departments have websites. They must be able to communicate to each other, but not be publicly. There is a main company website however.
The Software development team has to have a development space on the internal network. They use Linux servers as their platform for development so they must have their own space, but they expect the server to be secure.
(a) How would you solve these business requirement , both technically and securely as a new hire of linux system administrator?

Answer 1

Listed below are the few ways Linux Server can be secured

1. Group policies: This is a way to ensure security by applying group policies and permissions both on the group level and the files level. Through proper permission configuration we can easily restrict other users from accessing those files and directories.

2. Implementation of the firewall: Implementing firewall in each of the Linux server will definitely help in securing your machine from outside threats. Iptables will help in filtering the network traffic that are entering into the system and even going out of the system.

3.Enabling SELINUX: Enabling SELINUX is another way to secure your system especially a Linux Server. Selinux is a powerful security that checks and allows applications to run into the system. It won't allow any untrusted application to run into the system.