Port scanning

Port scanning is one of the initial steps, preceding typically an intrusion to a computer system.

This attack provides a potential intruder with information about - among the other - number of computers as well as the number and types of applications running on the scanned station.

Frequently, port scanning attack comprises part of routine network administrative tasks, targeting determination of sources of potential threats, though each external port scan should be considered as a potential attack attempt.


Counteraction:
Prevention at the very beginning is critical, since it typically prevents launching more qualified attacks on the network resources. It also prevents all effects of such attacks, including uncontrolled flow of trade information or prevention of computer sabotages.

Technical protection:
Conclusion of a security audit of network technologies allows for selection of appropriate devices preventing and blocking network scanting attempts. Further information about the individual protections selected depending on the character and size of Your data networks can be found in sub page [audit of network technologies]