This bachelor's work discusses IT issues of network access control. The first part deals with the theoretical background of network access control. There are explained various ways of authenticating and authorization users. Thanks these function, it is possible to prevent unauthorized persons access to computer networks. Knowledge of these technologies is essential for understanding the next part of the work. The remaining part of the work is concerned with recommendations and draft network access control for various model situations, especially for the college of University of Economics, Prague. Specific examples are given for network infrastructure based on device of the 3com company.Bakalářská práce pojednává o problematice řízení přístu...