Articles
Decentralized processing
Written by Miha Friday, 21 November 2008 11:28
We are dealing with system of interacting processors that have to solve a common problem. There can be different degrees of interacting processors decentralization. System become mode complex with each degree.
Distributed and decentralized systems
Written by Miha Thursday, 20 November 2008 14:48
As computer technology advances we have to deal with resources on different locations. One of the main problems that has to be solved is how to link decentralized resources together to work as a whole. There are many different types of distributed computing systems and many challenges to overcome in successfully designing one.
Protocols and communications - tcp/ip
Written by Miha Thursday, 03 July 2008 21:25
TCP/IP defines a set of rules to enable computers to communicate over a network. TCP/IP provides end to end connectivity specifying how data should be formatted, addressed, shipped, routed and delivered to the right destination. The specification defines protocols for different types of communication between computers and provides a framework for more detailed standards.
Network layer security - IPSec
Written by Miha Thursday, 03 July 2008 16:23
IPsec (IP security) is a suite of protocols for securing Internet Protocol (IP) communications by authenticating and/or encrypting each IP packet in a data stream.
It operates at the network layer (OSI layer 3). Other internet security protocols in widespread use (e.g. SSL, TLS, SSH), operate from the transport layer up (OSI layers 4 - 7). This makes IPsec more flexible, as it can be used for protecting layer 4 protocols, including both TCP and UDP, the most commonly used transport layer protocols. IPsec has an advantage over SSL and other methods that operate at higher layers: it is transparent to end user and applications.
Information system
Written by Miha Wednesday, 25 June 2008 20:56
An information system (IS) is a system, whether automated or manual, that comprises people, machines and/or methods organized to collect, process, transmit and disseminate data that represent user information.
Information system security management techniques
Written by Miha Wednesday, 25 June 2008 20:45
Security importance has been growing with the wider application and penetration of computer communications during last decades. Here are some detail notes how to deal with information systems security.
Read more: Information system security management techniques
Use case example UML 2
Written by Miha Monday, 02 June 2008 15:12
Use case example with intro text and step-by-step solution.
Information systems security services
Written by Miha Thursday, 07 February 2008 10:57
Notes about security services such as authentication, confidentiality, integrity, non-repudiation, access control and auditing (logging).