Tato práce se v první části zabývá představením technologií a nástrojů pro centrální správu a přihlašování uživatelů v GNU/Linux. Ukazuje využití adresářových služeb v síťové infrastruktuře, konkrétně služby NIS a její porovnání s dnes pravděpodobně nejrozšířenější adresářovou službou LDAP. Dále práce popisuje proces autentizace na klientských stanicích, konkrétně použití PAM a NSS a možné rozšíření celého systému zavedením cache díky démonu SSSD. Druhá část popisuje návrh a implementaci NIS provideru pro SSSD.

Submitted by Silvana Teresinha Dornelles Studzinski (sstudzinski) on 2016-05-18T16:03:18Z No. of bitstreams: 1 Edward Simon John_.pdf: 2766704 bytes, checksum: 51ba143145d5779779cf7302cfbcf429 (MD5) / Made available in DSpace on 2016-05-18T16:03:18Z (GMT). No. of bitstreams: 1 Edward Simon John_.pdf: 2766704 bytes, checksum: 51ba143145d5779779cf7302cfbcf429 (MD5) Previous issue date: 2016-02-24 / Nenhuma / Pessoas que enfrentam dificuldades de comunicação em suas atividades diárias, por apresentarem necessidades especiais para ver ou ouvir, são uma significativa parcela da população brasileira. Técnicas de robótica assistiva vêm sendo desenvolvidas para apoiar este público em determinadas atividades, com bons resultados sendo observados. Entretanto os dispositivos de robótica assistiva disponíveis para comunicação são, em geral, direcionados ao atendimento de um público específico e não consideram o atendimento das necessidades de um público misto, composto por pessoas com diferentes necessidades. Embora existam modelos versáteis quanto a canais de entrada e saída, não se observa a implementação dos recursos para atendimento de um amplo conjunto de necessidades. Dado esse contexto, este trabalho propõe um modelo de sistema de Interação Multimodal Humano Computador, embarcado em um robô assistivo, capaz de adaptar o conjunto de meios de interação necessários para a comunicação de acordo com o tipo e o grau de necessidades do usuário, fornecendo informações relevantes por meio dos canais adequados de acordo com cada deficiência. O modelo também inclui um conjunto de recursos destinados a obter informações em fontes diversas e disponibilizar estes resultados aos usuários. A abordagem proposta enfatiza o gerenciamento de usuários e a adaptação do uso dos canais de interação às suas características. Foi desenvolvido um protótipo com um conjunto de serviços ambientados no contexto de um campus universitário, com capacidade de atender à dúvidas e necessidades sobre este ambiente. Os testes realizados com este protótipo envolveram um grupo de 14 (quatorze) usuários com deficiência e suscitaram atitudes positivas quanto a aspectos de usabilidade como facilidade de uso, utilidade, conforto e eficácia. / People facing communication difficulties in their daily activities, because they have special needs to see or hear, are a significant portion of the Brazilian population. Robotic assistive techniques have been developed to support this public in certain activities, with good results being observed. However, assistive robotic devices available for communication are generally oriented to give heed to a specific audience and do not meet the needs of a mixed audience, composed of people with different needs. While there are versatile models in terms of input and output channels, the implementation of the resources in order to attend a wide range of needs is not seen. Given this context, this work proposes a model of Multimodal Human-Computer Interaction System, embedded in an assistive robot, able to adapt the set of interaction means for communication according to the type and degree of user needs, providing relevant information through appropriate channels according to each disability. The model also includes a set of features to obtain information from various sources and provide these results to users. The proposed approach emphasizes user management and adaptation of the use of interaction channels to their characteristics. A prototype with a set of services in the context of a university campus and capable of meeting the questions and needs of this environment was developed. The experiments with this prototype involved a group of 14 (fourteen) handicapped users and elicited positive attitudes towards usability aspects as ease of use, utility, comfort and efficiency.

Die "Mitteilungen des URZ" informieren die Nutzer des Universitätsrechenzentrums der TU Chemnitz umfassend über neue Dienste und Projekte, vermitteln ggf. Hintergrundwissen und dienen der Berichterstattung.

Die "Mitteilungen des URZ" informieren die Nutzer des Universitätsrechenzentrums der TU Chemnitz umfassend über neue Dienste und Projekte, vermitteln ggf. Hintergrundwissen und dienen der Berichterstattung.

Protecting organization’s assets from various security threats is a necessity for every organization. Efficient security management is vital to effectively protect the organization’s assets. However, the process of implementing efficient security management is complex and needs to address many requirements. The problem that this master’s thesis project addressed was to propose a component assurance process for the Swedish Armed Forces. This process has to be followed in order for a solution or product to be approved at a specific component assurance level. This problem was solved by first performing market research regarding security management. Various security management approaches were examined and the top security management solutions were selected. These solutions were then compared with the assurance requirements stated in Swedish Armed Forces’ KSF v3.1 (Swedish: “Krav på IT-säkerhetsförmågor hos IT-system”, English: Requirements for IT security capabilities of IT systems). This documentation lists the requirements for information technology (IT) security capabilities of IT systems. The solution that satisfied the most of these requirements was selected and modified in order to satisfy the full set of requirements. Finally, a component assurance process is proposed. This process may be used to decide which solutions or products can be used, along with the manner in which each solution or product should be used. The impact of having a component assurance process is that all the solutions and products are approved to a specific component assurance level exclusively based on this process. The ability to include such requirements in the acquisition of any product or service provides the Swedish Armed Forces with assurance that all products or services are approved to specific assurance levels in the same manner and hence provides the Swedish society with assurance that procedures within the Swedish Armed Forces are documented and protect the interests of the country and its citizens. / För varje organisation är det nödvändigt att skydda information från olika säkerhetshot. Att ha en effektiv säkerhetshantering är avgörande för att kunna skydda informationen. Denna process är komplex och många krav måste tillfredsställas. Problemet som detta examensarbete avser att lösa handlar om hur införandet av en assuransprocess kommer påverka Försvarsmakten. Denna process måste följas för att en lösning eller produkt ska godkännas till en specifik komponents säkerhetsnivå. Frågeställningen besvaras i första hand av en marknadsundersökning om säkerhetshantering. Olika säkerhetshanteringsstrategier undersöktes och de bästa säkerhetslösningar valdes. Lösningarna jämfördes därefter med de assuranskrav som anges i Försvarsmaktens KSF V3.1 (Krav på IT säkerhetsförmågor hos IT – system) som är den dokumentation som anger kraven för IT säkerhetsfunktioner i ett IT system. Lösningen som uppfyllde de flesta kraven valdes och modifierades för att uppfylla samtliga kraven. Slutligen rekommenderades en komponent assuransprocess, vilken skulle kunna användas för att avgöra vilken lösning eller produkt som skulle kunna användas samt på vilket sätt det skulle kunna användas. Möjligheten att införa sådana krav i förvärvet av vilken produkt eller tjänst det än gäller förser Försvarsmakten med garantier för att alla produkter eller tjänster är godkända enligt särskilda säkringsnivåer på samma sätt och därmed försäkras det svenska samhället att förfaranden inom svenska väpnade krafter dokumenteras samt skyddar landet och dess medborgare. / Säkerhetshantering, informationssäkerhet, autentisering, auktorisering, styrning, riskhantering, följsamhet, användaradministration

Informationen des Universitätsrechenzentrums mit Jahresrückblick 2009 zu den aktuellen Projekten und Diensten des URZ

Informationen des Universitätsrechenzentrums mit Jahresrückblick 2009 zu den aktuellen Projekten und Diensten des URZ:Jahresrückblick 2009 Neue Technologie im Campus-Backbone - Virtual Switching System (VSS) Softwareausstattung der Ausbildungspools Kurzinformationen Software-News