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VYSOKÁ ŠKOLA POLYTECHNICKÁ JIHLAVA Katedra Technických Studií
VYSOKÁ ŠKOLA POLYTECHNICKÁ JIHLAVA Katedra technických studií Návrh bezpečnostní politiky filtrování webového provozu ve školním prostředí bakalářská práce Autor práce: Radek Kudrna Vedoucí práce: Mgr. Antonín Přibyl Jihlava 2020 ZADÁNÍ BAKALÁŘSKÉ PRÁCE Autor práce: Radek Kudrna Studijní program: Elektrotechnika a informatika Obor: Aplikovaná informatika Název práce: Návrh bezpečnostní politiky filtrování webového provozu ve školním prostředí Cíl práce: V teoretické části diskutujte návrh bezpečného přístupu k Internetu pro žáky škol včetně návrhu monitoringu přístupů, na druhou stranu je potřeba zvážit politiku nefiltrovaného přístupu k Internetu. Diskutujte právní fakt nemožnosti delegace právní odpovědnosti na nezletilé žáky, která souvisí s provozem školních (bezdrátových) sítí. V praktické části bude provedeno nasazení Kerio Control s Active Directory pro filtrování provozu na MŠ a ZŠ Brtnice. Mgr. Antonín Přibyl doc. Ing. Zdeněk Horák, Ph.D. vedoucí bakalářské práce vedoucí katedry Katedra technických studií Abstrakt Tato bakalářská práce se zabývá problémem přístupu k internetu pro školy, zejména pro základní školy. Při nefiltrovaném obsahu jsou nezletilí žáci vystaveni určitým rizikům. Jedná se především o přístup na stránky se závadným obsahem, možností stát se kybernetickou obětí, nebo k samotné možnosti páchání trestné činnosti přes školní internet. Pro zamezení těchto činností je nutnost zavést určitou bezpečnostní politiku v podobě filtrování webových stránek. Právě jednotlivé možnosti blokování stránek jsou v práci popsány. Součástí je i ukázka a popis řešení v nástroji Kerio Control, který je nasazen na filtrování provozu na základní a mateřské škole Brtnice. Klíčová slova filtrování provozu; Kerio Control; monitoring; nezletilí žáci; webový filtr Abstract This bachelor thesis deals with the problem of Internet access for schools, especially for primary schools. -
Comodo Internet Security Essentials User Guide | © 2018 Comodo Security Solutions Inc
Comodo Internet Security Essentials Software Version 1.3 User Guide Guide Version 1.3.120318 Comodo Security Solutions 1255 Broad Street Clifton, NJ, 07013 United States Comodo Internet Security Essentials- User Guide Table of Contents Comodo Internet Security Essentials.......................................................................................................................................... 3 What is Comodo Internet Security Essentials?.......................................................................................................................... 3 How do I install Comodo Internet Security Essentials?.............................................................................................................4 What is a man-in-the-middle attack?......................................................................................................................................... 6 How does Comodo Internet Security Essentials protect me from a man-in-the-middle attack?................................................7 What is the install location of Comodo Internet Security Essentials?........................................................................................8 How do I update CISE?............................................................................................................................................................. 8 Understanding alerts and configuring exceptions....................................................................................................................14 -
Comodo Internet Security Quick Start Guide | © 2020 Comodo Security Solutions Inc
Comodo Internet Security Software Version 12.2 Quick Start Guide Guide Version 12.2.050520 Comodo Security Solutions 1255 Broad Street Clifton, NJ, 07013 United States Comodo Internet Security - Quick Start Guide Comodo Internet Security - Quick Start Guide This tutorial explains how to use Comodo Internet Security (CIS). Please use the following links to go straight to the section that you need help with: • Installation • The main interface • Scan and clean your computer • Run an instant antivirus scan on selected items • Set up the Firewall for maximum security and usability • Set up HIPS for maximum security and usability • Run untrusted programs in the container • Browse the internet and run untrusted programs inside the Virtual Desktop • Renew or upgrade licenses • More Help Installation • If you haven't done so already, please download the CIS setup file from https://www.comodo.com/home/internet-security/security-software.php • Before beginning installation, please ensure you have uninstalled any other antivirus and firewall products that are on your computer. More specifically, remove any other products of the same type as those Comodo products you plan to install. • Double click the CIS setup file to start the installation wizard. • Click 'Options' if you wish to configure advanced options. • After finishing the wizard, CIS runs an initial scan • You will be asked to choose your type of internet connection • On completion of scanning, the scan results are shown. You can choose the action to be taken on the threats found, if any. • You need to reboot your computer to complete installation. A more detailed description of the options available during installation can be found in the installation guide at https://help.comodo.com/topic-72-1-772-9552-CIS-Installation.html The Main Interface The CIS interface is designed to be as clean and informative as possible while letting you carry out tasks with the minimum of fuss. -
Physical Or Virtual Firewall for Perimeter Protection in Cloud Computer Infrastructure
16th INTERNATIONAL CONFERENCE ON INFORMATION SYSTEMS & TECHNOLOGY MANAGEMENT - CONTECSI - 2019 DOI: 10.5748/16CONTECSI/ITM-6115 PHYSICAL OR VIRTUAL FIREWALL FOR PERIMETER PROTECTION IN CLOUD COMPUTER INFRASTRUCTURE Thiago Mello Valcesia - IPT - Instituto de Pesquisas Tecnológicas - [email protected] Antonio Luiz Rigo - IPT - Instituto de Pesquisas Tecnológicas - [email protected] SUMMARY This article presents an examination of the different types of firewalls geared toward protecting Datacenters. The idea is to perform a survey of the different ways of installation, the safety perceived by customers, the positive and negative points of each model and the market trends for perimeter protection. In addition, it is intended to categorize rules, protection filters, application inspection criteria and services offered by firewalls, by analyzing the various protection schemes available in firewalls, regardless of the structure as a service in Cloud adopted. Keywords: Physical firewall, Virtual firewall, Cloud firewall, Security, Cloud Computing. INTRODUCTION The term Digital Security is increasingly present in our daily lives. The need to protect computers or prevent corporate networks from receiving unnecessary traffic, improper access, and unknown packets, coupled with the concern of professional information security staff about content accessed by Internet users, make data control a vital task. Firewall is much more than a "fire wall" isolating the company network from the external world represented by the Internet. The Firewall function is therefore essential to raise the level of security of the internal environment, protecting it from external attacks, increasing security and reducing the vulnerability of the local network. There are currently three Firewall alternatives to install on enterprise networks that aggregate cloud network segments: 1. -
A Large-Scale Empirical Study on Industrial Fake Apps
A Large-Scale Empirical Study on Industrial Fake Apps Chongbin Tang∗, Sen Chen∗, Lingling Fan∗, Lihua Xuy, Yang Liuz, Zhushou Tangx, Liang Dou∗ ∗East China Normal University, China yNew York University Shanghai, China zNanyang Technological University, Singapore xPwnzen Infotech Inc., China Abstract—While there have been various studies towards of app searching and downloading is greatly affected by the Android apps and their development, there is limited discussion fake apps in real world. of the broader class of apps that fall in the fake area. Fake Even worse, as the doorsill to develop an app has been set apps and their development are distinct from official apps and belong to the mobile underground industry. Due to the lack of low, the cost to develop a fake app is much lower than what it knowledge of the mobile underground industry, fake apps, their takes to develop a desktop program, providing an ideal hotbed ecosystem and nature still remain in mystery. for the underground industry to thrive on [3]. Moreover, the To fill the blank, we conduct the first systematic and com- flexibility of Android app implementation [4] contributes the prehensive empirical study on a large-scale set of fake apps. fake apps’ complexity. Over 150,000 samples related to the top 50 popular apps are collected for extensive measurement. In this paper, we present Despite the ubiquity, little is known about fake apps and discoveries from three different perspectives, namely fake sample their ecosystem – their common characteristics, the number characteristics, quantitative study on fake samples and fake au- of fake apps at large, their production process and speed, thors’ developing trend. -
Hostscan 4.8.01064 Antimalware and Firewall Support Charts
HostScan 4.8.01064 Antimalware and Firewall Support Charts 10/1/19 © 2019 Cisco and/or its affiliates. All rights reserved. This document is Cisco public. Page 1 of 76 Contents HostScan Version 4.8.01064 Antimalware and Firewall Support Charts ............................................................................... 3 Antimalware and Firewall Attributes Supported by HostScan .................................................................................................. 3 OPSWAT Version Information ................................................................................................................................................. 5 Cisco AnyConnect HostScan Antimalware Compliance Module v4.3.890.0 for Windows .................................................. 5 Cisco AnyConnect HostScan Firewall Compliance Module v4.3.890.0 for Windows ........................................................ 44 Cisco AnyConnect HostScan Antimalware Compliance Module v4.3.824.0 for macos .................................................... 65 Cisco AnyConnect HostScan Firewall Compliance Module v4.3.824.0 for macOS ........................................................... 71 Cisco AnyConnect HostScan Antimalware Compliance Module v4.3.730.0 for Linux ...................................................... 73 Cisco AnyConnect HostScan Firewall Compliance Module v4.3.730.0 for Linux .............................................................. 76 ©201 9 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. -
Exploiting Cloud Management Services As an Information Leakage Channel
I Heard It through the Firewall: Exploiting Cloud Management Services as an Information Leakage Channel Hyunwook Baek∗ Eric Eide [email protected] [email protected] University of Utah University of Utah Salt Lake City, UT, USA Salt Lake City, UT, USA Robert Ricci Jacobus Van der Merwe [email protected] [email protected] University of Utah University of Utah Salt Lake City, UT, USA Salt Lake City, UT, USA ABSTRACT Though there has been much study of information leakage chan- nels exploiting shared hardware resources (memory, cache, and disk) in cloud environments, there has been less study of the ex- ploitability of shared software resources. In this paper, we analyze the exploitability of cloud networking services (which are shared among cloud tenants) and introduce a practical method for build- ing information leakage channels by monitoring workloads on the cloud networking services through the virtual firewall. We also demonstrate the practicality of this attack by implementing two different covert channels in OpenStack as well as a new classof side channels that can eavesdrop on infrastructure-level events. By utilizing a Long Short-Term Memory (LSTM) neural network model, our side channel attack could detect infrastructure level VM creation/termination events with 93.3% accuracy. CCS CONCEPTS • Security and privacy → Distributed systems security; Fire- walls; • Computer systems organization → Cloud computing; • Networks → Cloud computing; Figure 1: Resource sharing of two requests KEYWORDS cloud management, cloud security, side channel, OpenStack 1 INTRODUCTION However, shared resources also cause interference among cloud tenants and can even be exploited as information leakage channels Resource sharing is a fundamental part of cloud computing. -
Who Is Ivan Pepelnjak (@Ioshints)
Virtual Firewalls Ivan Pepelnjak ([email protected]) NIL Data Communications Who is Ivan Pepelnjak (@ioshints) • Networking engineer since 1985 • Focus: real-life deployment of advanced technologies • Chief Technology Advisor @ NIL Data Communications • Consultant, blogger (blog.ioshints.info), book and webinar author • Teaching “Scalable Web Application Design” at University of Ljubljana Current interests: • Large-scale data centers and network virtualization • Networking solutions for cloud computing • Scalable application design • Core IP routing/MPLS, IPv6, VPN 2 © ipSpace.net / NIL Data Communications 2013 Virtual Firewalls Virtualization Webinars on ipSpace.net Coming in 2013 Coming in 2013 vSphere 5 Update Overlay Virtual Networking Coming in 2013 Virtual Firewalls OpenFlow and SDN Use Cases VXLAN Deep Dive OpenFlow VMware Networking Cloud Computing Networking Introduction to Virtualized Networking Availability Other options • Live sessions • Customized webinars • Recordings of individual webinars • ExpertExpress • Yearly subscription • On-site workshops 3 InterMore© ipSpace.net- DCinformation /FCoE NIL Data Communications has @ very2013 http://www.ipSpace.net/Webinars limitedVirtual use Firewalls and requires no bridging Firewalls Used To Be Easy Packet filters Application-level firewalls (WAF) Firewalls Stateful Load firewalls balancers? 4 © ipSpace.net / NIL Data Communications 2013 Virtual Firewalls Routed or Bridged? Routed (inter-subnet) Transparent (bridged) • Packet filtering and IP routing • Packet filtering and bridging -
The Virtual Firewall
The Virtual Firewall Vassilis Prevelakis Computer Science Department Drexel University 1. Introduction The trend towards portable computing means that the traditional security perimeter architecture (where a firewall protects computers in the LAN by controlling access to the outside world) is rapidly becoming obsolete. This has resulted in a number of products described as “personal firewalls” that control that computer’s access to the network and hence can protect it in the same way as a traditional firewall. Existing systems such as Windows and most Unix and Unix-like systems already provide security features that can be used to implement firewall functionality on every machine. However, the difficulty of securing general purpose operating systems has im- peded the widespread use of this approach. Moreover, it is difficult to ensure that a secured sys- tem remains secure after the user has had the opportunity to install software and perform recon- figurations and upgrades. Recognizing the futility of attempting to secure the user machines themselves, in [Prev03, Denk99] the authors proposed the use of a portable “shrink-wrapped” firewall. This was a sepa- rate machine running an embedded system that included firewall capabilities and was intended to be placed between the general purpose computer and the network. The problem of securing the firewall became much simpler as it utilized a special-purpose firewall platform with a highly controlled architecture. Sadly, the proposal saw limited adoption because carrying around yet another device is expensive and inconvenient. To make matters worse, if the external device is lost or damaged the user will be presented with a dilemma: remain disconnected from the net- work until the firewall box is replaced, or accept the risk and connect the laptop directly to the unprotected network. -
Comodo Internet Security User Guide | © 2019 Comodo Security Solutions Inc
Comodo Internet Security Software Version 6.3 User Guide Guide Version 6.3.082819 Comodo Security Solutions 1255 Broad Street STE 100 Clifton, NJ, 07013 United States Comodo Internet Security 6.3 - User Guide Table of Contents 1. Introduction to Comodo Internet Security.............................................................................................................................. 6 1.1.Special Features............................................................................................................................................................... 10 1.2.System Requirements....................................................................................................................................................... 13 1.3.Installation......................................................................................................................................................................... 13 1.3.1.CIS Premium - Installation........................................................................................................................................ 14 1.3.2.CIS Pro - Installation and Activation.........................................................................................................................27 1.3.3.CIS Complete - Installation and Activation...............................................................................................................39 1.3.4.Activating CIS Pro/Complete Services after Installation...........................................................................................52 -
Security Operations Center-As-A-Service Date: November 2018 Author: Tony Palmer, Senior Validation Analyst; and Jack Poller, Senior Analyst
Enterprise Strategy Group | Getting to the bigger truth.™ Technical Review Comodo MDR: Security Operations Center-as-a-service Date: November 2018 Author: Tony Palmer, Senior Validation Analyst; and Jack Poller, Senior Analyst Abstract This ESG Technical Review documents hands-on testing of the Comodo MDR security operations center (SOC)-as-a-service platform. We focus on how Comodo MDR provides defense-in-depth for organizations’ network, endpoints, web, and cloud infrastructure as a bundled, cost-efficient service. The Challenges As ESG’s annual IT spending intentions survey reveals, the global cybersecurity skills shortage continues unabated. In 2018, 51% of respondents state their organization has a problematic shortage (see Figure 1), up from 45% in 2017.1 IT and security staff face an ever-growing amount of internally and externally generated data, hindering their ability to uncover and resolve threats quickly, and preventing them from keeping skills sets up to date. The skills gap threatens the ability of organizations to maintain effective security controls and minimize risk. Figure 1. Top Ten Areas of IT Skills Shortage In which of the following areas do you believe your IT organization currently has a problematic shortage of existing skills? (Percent of respondents, N=620, multiple responses accepted) Cybersecurity 51% IT architecture/planning 33% Server/virtualization administration 26% Data protection (i.e., backup and recovery) 26% Application development 25% Compliance management, monitoring and reporting 25% Business intelligence/data analytics 25% Mobile application development 24% Network administration 23% Storage administration 22% Source: Enterprise Strategy Group Organizations need effective cybersecurity management—aggregating data, prioritizing action, and distributing work—to handle the ever-increasing velocity and volume of cyber-attacks. -
Comodo Cloud Antivirus User Guide | © 2019 Comodo Security Solutions Inc
Comodo Cloud Antivirus Software Version 1.20 User Guide Guide Version 1.20.082919 Comodo Security Solutions 1255 Broad Street Clifton, NJ, 07013 United States Comodo Cloud Antivirus - User Guide Table of Contents 1. Introduction to Comodo Cloud Antivirus................................................................................................................5 1.1.System Requirements..........................................................................................................................................6 1.2.Installation ...........................................................................................................................................................7 1.3.Start Comodo Cloud Antivirus............................................................................................................................16 1.3.1.The Main Interface....................................................................................................................................18 1.3.2.The Widget................................................................................................................................................22 1.3.3.The System Tray Icon...............................................................................................................................24 1.4.'Lucky You' Statistics..........................................................................................................................................25 1.5.Understand CCAV Alerts....................................................................................................................................29