Data security issues are a very important element in the functioning of every company.
The most important elements that can be distinguished are the following:
One of the solutions to protect servers is to use a firewall which, if well prepared is responsible for blocking unwanted connections. In addition to its standard role, there are more sophisticated applications that help maintain adequate level of security by blocking all kinds of network traffic aimed at stopping services running on the server (such as DoS attacks).
- Additional applications
This point relates to the security solutions that support common services running on servers. For example, the Apache Web server allows to install additional modules like mod-security, which significantly improves the security of web sites against attacks such as SQL injection or XSS.
- SSL certificates
In order to secure the communications between the website and the Customer, SSL certificates are used. It enables encryption of transmitted data which allows safely transmission of confidential information.
- Data backup
Most important element of security is the regular backup of the data. These operations can be carried out in various ways including individual prepared scripts or dedicated software for that purpose. Popular applications are: Bacula and Amanda. They offer very advanced features that’s why they are used even in large organizations.
- Data encryption
Data encryption can be done by encoding the entire hard drive on which the operating system works along with important information. Access to information stored on the hard disk is possible in this case, after entering the password or by the decryption key. An example of a program that can be used for data encryption is TrueCrypt. With this tool, encryption is possible on any device that stores data such as: memory with USB interface, cards (e.g. SD), hard disk drives.