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Security provisions of VoIP traffic in Open source PBX
Chalás, Jaroslav ; Daněček, Vít (referee) ; Šilhavý, Pavel (advisor)
Main goal of creating the Open Source project and GPL licence are free sources and applications available for a wide public. Competent communities are responsible for support and upgrade of Open source based applications and softwares, which are created on a voluntary bases. Due to this fact an implementation depends on plenty others publicly available libraries and applications, which sometimes complicate the installation process itself. Successfully created VoIP connection is two-phase based process. Signalization is necessary in the first place, which might be supported with H.323 or SIP. After call parameter negotiation – voice codec, cipher code, ports etc, the second phase takes over to transfer voice. Theoretical part of this thesis describes SIP, H.323, MGCP, RTP and IAX protocols, as well as secure ways of signalization and voice stream part of the call. These might be SIPS, SRTP, ZRTP and IPsec. In thesis Open Source Asterisk PBX is well described, when mentioning its options, features and community support. I put near options available for particular releases and introduce attacks and abuses which are possible to perform on the VoIP system in general, together with available, no cost and working tools to perform the attacks with. Practical part focuses on possibilities to generate experimental attacks on individual systen parts with exact definition of what the consequences are. Based on the overall analyse of achieved results I conclude three solutions as autoinstallation linux packages. These „deb“ packages consist of specific Asterisk release required to meet the security needs, ready-to-test configuration and guide to follow with correct options to set. Final security possibilities requires hardening on application layer, where Iptables takes its part. „Linux firewall“ as some express Iptables are configured to reflect VoIP system parameters and protect from DoS attacks.
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Typology of domestic violence events, their motivation and conditions in the so-called coronavirus era
VACKOVÁ, Adéla
The theoretical part of the thesis explains the concept of domestic violence, its manifestations, the characteristics of perpetrators and victims, and legal protection within the Czech legislation. This part is important for a better understanding of the whole issue and for better orientation in this area. The main objective of the thesis is to assess the changes in the functioning of helping organizations in the České Budějovice during the covid-19 pandemic compared to the standard state and any disruption of the usual course of action in providing assistance during the pandemic measures. Emphasis is placed on determining the impact of quarantine on partnerships and family relationships during a period of increased mental stress. The main goal is also to determine whether there has been an escalation or a decrease in domestic violence during this time. The work will involve analyzing data obtained from intervention centers in the České Budějovice, which will provide important information about the situation regarding domestic violence during the pandemic. The results of this work will serve to improve understanding of this issue and improve support for victims of domestic violence. It is necessary to ensure that all necessary resources and support are available for domestic violence victims. This work can contribute to greater awareness of this issue and improve conditions for those affected by it.
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The forms of CAN syndrom - overview work
MARTÍNEK, Daniel
The presented bachelor thesis is written in the form of a review study. The main goal is to summarize the available scientific studies, research and information from the literature, both Czech and English, from 1992 to 2021, concerning the CAN syndrome. The content includes works from domestic and foreign literature. Scientific studies come from the scientific database Scopus, Research gate and JSTOR. Expert articles were obtained through Google Scholar. Sources that were available in Czech or English are used also from the book literature. It turned out that there are many studies and professional texts in this area abroad and, with a few deviations, they coincide in their content with the Czech ones. Based on the studied literature, the most common forms of CAN syndrome are defined, which are dealt with in the first half of the work. The professional articles included the consequences of these forms of CAN syndrome, signs of how to recognize these forms of the syndrome of an abused, mistreated and neglected child, as well as a description of their various forms. In addition to physical injuries, the main problem with CAN syndrome was the uncertain relationship with parents, which then affects children throughout their lives. Furthermore, the literature describes the forms of CAN syndrome, which they names as special and as new. These are incorporated in the work as three forms of the syndrome, which were in some literature marked as the classic ones. The first part of the theoretical work also processes statistical data that the sources contained. They showed that this syndrome is a relatively large problem both abroad and in the Czech Republic. Another area that appears in the literature is the therapy of CAN syndrome and a list of institutions that address this issue. The conclusions of this work can serve as a basis for education in the field of CAN syndrome, which is, as evidenced by published studies, a serious problem both in our country and all around the world.
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Selected ethical aspects of an employee of the body of social and legal protection of children
SCHINDLER, Jan
This thesis deals with categorized ethical dilemmas in the performance of the work of an employee of the body of social and legal protection of children. It presents the ethical dilemmas arising in the performance of the work of an employee of the body of social and legal protection of children, which in some way affect the conscience of the social worker. At the same time, it deals with how specifically ethical dilemmas affect a social worker personally, and what is their view of the whole ethically problematic case. Alongside with the previously mentioned, this work inquires into the impact of such dilemmas on children and their families. Subsequently, the thesis describes how the ethical dilemmas can be solved with the help of the ethics of virtues. The goals of this work are to introduce the whole body of social and legal protection of children, to introduce a problematic family that needs to be rehabilitated in order to restore its basic functions of healthy functioning. The last goal of this work is to present the manifestations and consequences of an abused, mistreated or neglected child and the possibility of solving such a problem. This thesis has four chapters. The first chapter deals with the body of social and legal protection of children. The second chapter describes its specific activities. The third chapter ethically focuses on the ethical dilemmas of the employees of the social and legal protection of children. The last chapter presents the ethics of virtues and how this ethical theory can comprehensively address the good lives of children and their families, who need help from the child welfare authority.
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Awareness of Child Abuse and Neglect Syndrome in the context of the campaigne MeToo
KOSTELECKÁ, Adéla
Bachelor's thesis deals with the problematic of the abused and neglected child syndrome. The thesis' aim is to determine grammar school students' awareness of this problematic. Thesis introduces the main concepts concerning the CAN syndrome, mentions prevention options, different CAN syndrome forms and their consequences. Furthermore, selected institutions dealing with said syndrome are listed. The practical part is focused on the determination of grammar school students' awareness of the CAN syndrome and the #MeToo Campaign. Quantitative research is used in the practital part. In the final part, information determined via the survey is summarized.
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Corporal punishment in raising children
BARTOŠOVÁ, Olga
The bachelor's thesis provides a comprehensive view of the issue of corporal punishment of children in the Czech Republic, even in the historical context. This topic has recently been widely discussed worldwide, and is timeless at the same time. In our republic, corporal punishment is still widely used as an educational tool. The question is when the Czech Republic will be ready to pass a law banning the use of corporal punishment. The work consists of two parts. The theoretical part explains important definitions such as upbringing, rewards, punishments and the possible consequences of inappropriate use of physical punishments. The practical part solves, in the form of quantitative research, the use of physical punishments in the upbringing of children of pedagogically educated respondents. I chose an electronic questionnaire as a method of data collection. The data were processed and converted into tables and graphs. It has established seven research questions that I try to find answers to.
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Stigmatisation of Abused Women in Russian Society as a Social Problem
Korobkova, Daria ; Angelovská, Olga (advisor) ; Kotherová, Zuzana (referee)
The thesis deals with the issue of stigmatization of women exposed to violence in Russian society, it mainly examines violence against women as a destructive phenomenon with different characteristics of its perception in the process of social development, and the stigmatization of women exposed to violence as a social phenomenon. As part of the work, a sociological survey was conducted in which 800,000 women from all over Russia participated. The research carried out in the form of a questionnaire tests established hypotheses based on statistics, and also discovers new data on the issue. The main goal of the thesis is the analysis and interpretation of the results of sociological research and the answer to the main research question, i.e. whether the stigmatization of women exposed to violence in Russia is a real process of social stigmatization, but victim-blaming. Keywords Violence against women, stigmatization, victimblaming, conviction, domestic violence, sexual harassment, rape. Title Stigmatization of Women Exposed to Violence in Russian Society As a Social Problem
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Use of addictive medication in the Czech Republic
Brožková, Lenka ; Gabrhelík, Roman (advisor) ; Rolová, Gabriela (referee)
Background: The use of psychoactive prescription drugs (PPDs) in the patient population is poorly studied in Czechia. Aims: (i) To investigate the prevalence of PPDs use; (ii) to estimate the extent of doctor shopping (DS); (iii) to explore the association between the repeated use of PPD, DS and subsequent addiction care. Design and setting: Pharmacoepidemiological study using the precription database and the database of reimbursed health services of health insurance company Zamestnanecka pojistovna Skoda (2012-2021). Participants: Insurees (n=146,177; male n=71,013; female n=75,164) represented by approximately 340,000 health records. Measurements: To identify drug use in the form of DS we analyzed prescription overlaps from multiple health care providers. The association between repeated use of PPD and provided health services was determined by analyzing the drug history of insurees who received any type of addiction service. Findings: We found that more than half of the insurees who used the opioid analgesic also used anxiolytic drugs in the same year. The highest proportion of insurees with DS was related to stimulant use (3.37%). Regarding opioid analgesics and benzodiazepines, the proportions were similar (OA 2.25%; BZD 2.37%). The number of duplicit prescriptions per doctor shopper was the...
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Safe sport
Cvachová, Adéla ; Němcová Tejkalová, Alice (advisor) ; Buriánková, Jitka (referee)
The final thesis Safe Sport summarizes scientific theoretical knowledge with references to other relevant literature and presents a didactic material draft that can be used as a base for raising awareness and developing education in the field of safe sport in the Czech Republic. Text of the thesis is divided into two parts, a theoretical and a practical. The first, theoretical part defines the term safe sport by summarizing professional concepts and scientific knowledge using the methods of analysis, synthesis, comparison and compilation. In order to put these concepts and knowledge into context and to analyze the state of the Czech sport environment, they are supplemented by available case reports from the Czech media. The subsequent practical part of the thesis presents a proposal for didactic material reflecting the current situation and needs of the Czech sports environment. In addition to the theoretical scientific knowledge, it also includes practical suggestions for prevention and possible procedures for dealing with specific examples of situations that cross the boundaries of a safe sport environment. Keywords: prevention, harassment, abuse, non-accidental violence, didactic material, education, youth
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Abuse of dominance on the internet
Netrval, Daniel ; Navrátil, Petr (advisor) ; Svobodová, Magdaléna (referee)
1 Abuse of dominance on the internet Abstract The topic of the thesis is the traditional competition law delict of abuse of dominant position, but on the internet. The first, theoretical, chapters of the thesis focus on the development of the concept of abuse of dominance in the European Union law during the past decades. Subsequently, they describe the digital market, its specifics and defining characteristics. The next part of this thesis uses this information to describe the specifics of competition law regulation in relation to internet services. In particular, the specifics of the definition of relevant markets and market power are analysed. The practical part of the thesis deals with a case study of two European Commission decisions. Namely, the merger decision in Case COMP/M.7217 - Facebook / WhatsApp and the abuse of dominance decision in Case AT.39740 - Google Search (Shopping). The first decision was chosen because it provides a good example of definition of the relevant markets in relation to internet services, where the Commission had to define the relevant product market based on product characteristics. The antitrust decision is then described in the light of its complexity and the judicial review that has already taken place. It also touches the issue of self-preferencing as, in principle, a...
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