Technical Report TR2005-544 Department of Computer Science, Dartmouth College June 17, 2005 Abstract
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Instalación Y Configuración De Cortafuegos
Tema 4. Seguridad y alta disponibilidad Instalación y configuración de cortafuegos Raquel Castellanos Crespo Instalación y configuración de cortafuegos Seguridad y alta disponibilidad Raquel Castellanos Crespo INDICE Cortafuegos - Concepto. Utilización de cortafuegos - Historia de los cortafuegos - Funciones principales de un cortafuegos: Filtrado de paquetes de datos, filtrado por aplicación, reglas de filtrado y registros de sucesos de un cortafuegos - Listas de control de acceso (ACL) - Ventajas y limitaciones de los cortafuegos - Políticas de cortafuegos - Tipos de cortafuegos: Clasificación por ubicación y por tecnología - Arquitecturas de cortafuegos - Pruebas de funcionamiento. Sondeos Cortafuegos software y hardware - Cortafuegos software integrados en los sistemas operativos - Cortafuegos software libres y propietarios - Distribuciones libres para implementar cortafuegos en maquinas dedicadas - Cortafuegos hardware. Gestión unificada de amenazas “Firewall UTM” (Unified Threat Management) 2 Tema 4. Seguridad y alta disponibilidad | Raquel Castellanos Crespo Instalación y configuración de cortafuegos Seguridad y alta disponibilidad Raquel Castellanos Crespo Concepto y utilización de cortafuegos Un cortafuegos (firewall en inglés) es una parte de un sistema o una red que está diseñada para bloquear el acceso no autorizado, permitiendo al mismo tiempo comunicaciones autorizadas. Se trata de un dispositivo o conjunto de dispositivos configurados para permitir, limitar, cifrar, descifrar, el tráfico entre los diferentes ámbitos sobre la base de un conjunto de normas y otros criterios. Los cortafuegos pueden ser implementados en hardware o software, o una combinación de ambos. Los cortafuegos se utilizan con frecuencia para evitar que los usuarios de Internet no autorizados tengan acceso a redes privadas conectadas a Internet, especialmente intranets. Todos los mensajes que entren o salgan de la intranet pasan a través del cortafuegos, que examina cada mensaje y bloquea aquellos que no cumplen los criterios de seguridad especificados. -
Master Thesis
Master's Programme in Computer Network Engineering, 60 credits MASTER Connect street light control devices in a secure network THESIS Andreas Kostoulas, Efstathios Lykouropoulos, Zainab Jumaa Network security, 15 credits Halmstad 2015-02-16 “Connect street light control devices in a secure network” Master’s Thesis in Computer Network engineering 2014 Authors: Andreas Kostoulas, Efstathios Lykouropoulos, Zainab Jumaa Supervisor: Alexey Vinel Examiner: Tony Larsson Preface This thesis is submitted in partial fulfilment of the requirements for a Master’s Degree in Computer Network Engineering at the Department of Information Science - Computer and Electrical Engineering, at University of Halmstad, Sweden. The research - implementation described herein was conducted under the supervision of Professor Alexey Vinel and in cooperation with Greinon engineering. This was a challenging trip with both ups and downs but accompanied by an extend team of experts, always willing to coach, sponsor, help and motivate us. For this we would like to thank them. We would like to thank our parents and family for their financial and motivational support, although distance between us was more than 1500 kilometres. Last but not least we would like to thank our fellow researchers and friends on our department for useful discussions, comments, suggestions, thoughts and also creative and fun moments we spend together. i Abstract Wireless communications is a constantly progressing technology in network engineering society, creating an environment full of opportunities that are targeting in financial growth, quality of life and humans prosperity. Wireless security is the science that has as a goal to provide safe data communication between authorized users and prevent unauthorized users from gaining access, deny access, damage or counterfeit data in a wireless environment. -
SEGURIDAD Y ALTA DISPONIBILIDAD En Este Libro Se Abarcara La Asignatura De Servicios De Red E Internet Del Grado Superior De Informática
SEGURIDAD Y ALTA DISPONIBILIDAD En este libro se abarcara la asignatura de servicios de red e internet del grado superior de informática. Escrito por: Nicolás Madrid Gallego Nicolás Madrid Gallego IES GREGORIO PRIETO CORTAFUEGOS SEGURIDAD Y ALTA DISPONIBILIDAD CORTAFUEGOS 2 SEGURIDAD Y ALTA DISPONIBILIDAD CORTAFUEGOS Contenido 1.- Concepto . Utilización de cortafuegos. ........................................................................... 3 2.-Historia de los cortafuegos ............................................................................................... 4 Primera generación – cortafuegos de red: filtrado de paquetes ................................ 5 Segunda generación – cortafuegos de estado ............................................................ 5 Tercera generación - cortafuegos de aplicación.......................................................... 6 Acontecimientos posteriores ......................................................................................... 6 1.3.-Funciones principales de un cortafuegos: Filtrado de paquetes de datos, filtrado por aplicación, Reglas de filtrado y registros de sucesos de un cortafuegos ................... 7 Filtrado de paquetes .............................................................................................................. 7 1.4.-Listas de control de acceso (ACL) .............................................................................. 10 1.5.-Ventajas y Limitaciones de los cortafuegos .............................................................. -
AWS Site-To-Site VPN User Guide AWS Site-To-Site VPN User Guide
AWS Site-to-Site VPN User Guide AWS Site-to-Site VPN User Guide AWS Site-to-Site VPN: User Guide Copyright © Amazon Web Services, Inc. and/or its affiliates. All rights reserved. Amazon's trademarks and trade dress may not be used in connection with any product or service that is not Amazon's, in any manner that is likely to cause confusion among customers, or in any manner that disparages or discredits Amazon. All other trademarks not owned by Amazon are the property of their respective owners, who may or may not be affiliated with, connected to, or sponsored by Amazon. AWS Site-to-Site VPN User Guide Table of Contents What is Site-to-Site VPN ..................................................................................................................... 1 Concepts ................................................................................................................................... 1 Working with Site-to-Site VPN ..................................................................................................... 1 Site-to-Site VPN limitations ......................................................................................................... 2 Pricing ...................................................................................................................................... 2 How AWS Site-to-Site VPN works ........................................................................................................ 3 Site-to-Site VPN Components ..................................................................................................... -
Building Ipv6 Based Tunneling Mechanisms for Voip Security
WK,QWHUQDWLRQDO0XOWL&RQIHUHQFHRQ6\VWHPV6LJQDOV 'HYLFHV Building IPv6 Based Tunneling Mechanisms for VoIP Security Amzari J. Ghazali, Waleed Al-Nuaimy, Ali Al-Ataby, Majid A. Al-Taee Department of Electrical Engineering and Electronics University of Liverpool, UK e-mail: {amzari.ghazali, wax, ali.ataby, altaeem}@liv.ac.uk Abstract—Internet protocol version 6 (IPv6) was such as Toredo, 6to4 and manual configuration [4]. developed to resolve the IPv4 address exhaustion Despite the benefits of using IPv6, there are still problem and support new features. However, IPv6 still challenges and obstacles in implementing and comprises some defectiveness of IPv4 protocol such as practically using IPv6 VoIP [5]. The issues of the multimedia security. This paper presents IPv6-based transition from the current IPv4 network to IPv6 as tunneling mechanisms for securing Voice over Internet Protocol (VoIP) network traffic using OpenSwan IPSec well as VoIP performance for both IP versions need (site-to-site). IPSec with Triple Data Encryption to be assessed and compared. Algorithm (3DES) is used to create a Virtual Private Evaluation of VoIP performance with IPSec in Network (VPN) on top of existing physical networks. IPv4, IPv6 and 6to4 networks using Teredo for NAT Secure communication mechanisms can therefore be provided for data and control information transmitted traversal in a test LAN was previously reported in between networks. Secure VoIP-oriented mechanisms [6]. The testbed used softphones to setup calls, and on VPN IPv6 have been designed, implemented and background traffic was generated to create congestion tested successfully using open source approaches. The on the links and routers. The results demonstrated the performance of the IPv6 VoIP network is assessed feasibility of using a single Linux box to handle experimentally in terms of several performance metrics IPSec, 6to4 and NAT processing, and it was found including jitter, throughput and packet loss rate. -
Catalogueformationspythagorefd 2017.Pdf
p.1 Pythagore F.D. : Apprendre à Apprendre Nouveautés 2017 : Pour plonger au coeur des technologies BigData, comprendre les concepts de NoSQL, d'indexation, de sharding, etc ... savoir concevoir les architecture ad-hoc et intégrer, déployer les solutions, nous proposons une gamme complète de formations, ateliers, classes virtuelles qui vont de l'introduction avec des stages comme « BigData, architecture et technologies », jusqu'à l'expertise sur des sujets comme la « Programmation R pour hadoop », ou le stage « Machine Learning : technologies et bonnes pratiques ». Nos domaines d'expertise : • Unix et Linux, et les applicatifs Apache, Openldap, Squid, Nagios, Zabbix, OCS/GLPI, puppet , chef... • la virtualisation et l'orchestration avec xen, kvm, lxc, Docker, et le cloud : cloudstack et openstack, openNebula, Cloudify, cobbler, etc ... • TCP/IP (IPv6, snmp, Architecture, Sécurité, Administration de réseaux IP, VoIP, ...) • Développement (langage C, Java, Jee, technologies Jee, JBoss, WebServices, PHP, Perl, Python , ...) et le développement sur mobiles android • les bases de données et le BigData avec NoSQL, Cassandra, MongoDB, Hadoop, ... Sur chacun de ces domaines, notre équipe possède un excellent niveau d'expertise couvrant l'ensemble du domaine, des fondamentaux aux outils les plus complexes : nos formations vont de l'introduction à Linux, à la Sécurité, la Haute Disponibilité, des concepts NoSQL à la programmation MapReduce Tous nos stages sont l'occasion de nombreuses mises en pratique et exercices de manière à permettre aux participants de bien assimiler les nouveaux concepts. Nos méthodes pédagogiques : Apprendre, concevoir, intégrer ... nous pensons que le meilleur moyen de comprendre les nouveaux concepts et les technologies est la mise en pratique. Nous organisons des ateliers, expériences, démonstrations, .. -
CS670: Network Security
Cristina Nita-Rotaru CS670: Network security IPsec. TLS. Sources 1. Many slides courtesy of Christo Wilson and Wil Robertson 2. IPSec Key management based on slides from B. LaMacchia 3. Analysis of the HTTPS Certificate Ecosystem, IMC 2013: https://jhalderm.com/pub/papers/https-imc13.pdf 4. Analysis of SSL certificate reissues and revocations in the wake of Heartbleed, IMC 2014: http://www.ccs.neu.edu/home/cbw/pdf/imc254-zhang.pdf 2 IPSec; TLS 1: Protecting IP: IPsec OSI/ISO Model Application Application Presentation Presentation Session Session Transport Transport Network Network Data Link Data Link Physical Layer Physical Layer 4 IPSec; TLS IPsec design goals } Design philosophy: applications cannot be trusted to implement end-to-end security properly and security should be built into the network itself } Transparent to applications (below transport layer ) } Goal: Facilitate direct IP connectivity between sensitive hosts through untrusted networks } It is designed to be extremely flexible } Different crypto algorithms and key exchange supported } Different security services compositions } Different granularities of protection 5 IPSec; TLS Security goals } IPsec provides: } access control } integrity } data origin authentication } rejection of replayed packets } confidentiality } IETF IPSEC Working Group } Documented in RFCs and Internet drafts 6 IPSec; TLS Security and deployment mechanisms } Operates based on security associations } Deployment: } Transport-mode: encapsulates an upper-layer protocol (e.g. TCP or UDP) and preapends an -
Architecture of a Identity Based Firewall System
ARCHITECTURE OF A IDENTITY BASED FIREWALL SYSTEM Nenad Stojanovski1 and Marjan Gušev2 1 Makedonski Telekom AD, Orce Nikolov BB, 1000 Skopje, Macedonia [email protected] 2 Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Arhimedova b.b., PO Box 162, 1000 Skopje, Macedonia [email protected] ABSTRACT Classic firewall systems are built to filter traffic based on IP addresses, source and destination ports and protocol types. The modern networks have grown to a level where the possibility for users’ mobility is a must. In such networks, modern firewalls may introduce such complexity where administration can become very frustrating since it needs the intervention of a firewall administrator. The solution for this problem is an identity based firewall system. In this paper we will present a new design of a firewall system that uses the user’s identity to filter the traffic. In the design phase we will define key points which have to be satisfied as a crucial milestone for the functioning of the whole Identity based firewall system. KEYWORDS Identity based firewalls, user identity, firewalls, network security, computer networks, firewall systems design 1. INTRODUCTION Classic firewall systems are built to filter traffic based on source and destination IP addresses, source and destination ports and protocol types[11]. As Information technology moves forward and advances, classic firewalls start to become very robust and unusable when it comes to the transparent user experience. The main problem that arises from using classic firewalls in a modern dynamic environment is that users have to be mobile and have access to their resources. -
FIPS 140-2 Security Policy
Red Hat Enterprise Linux 6.2 Openswan Cryptographic Module v2.0 FIPS 140-2 Security Policy version 1.1 Last Update: 2012-11-13 Red Hat Enterprise Linux 6.2 Openswan Cryptographic Module version 2.0 FIPS 140-2 Security Policy Contents 1 Cryptographic Module Specification .................................................................................................... .................. 3 1.1 Description of Module ............................................................................................................. .................. ... 3 1.2 Description of Approved Mode .......................................................................................................... ............ 4 1.3 Cryptographic Module Boundary ......................................................................................... ......................... 5 1.3.1 Hardware Block Diagram ................................................................................................................. .......... 6 1.3.2 Software Block Diagram .......................................................................................................... ................... 7 1.4 Red Hat Enterprise Linux 6.2 Cryptographic Modules and FIPS 140-2 Certification ......................... .......... 7 1.4.1 Platforms ............................................................................................................................... ............. ........ 8 1.4.2 FIPS Approved Mode ....................................................................................................................... -
Cortafuegos Y Seguridad En El Internet”
INSTITUTO POLITÉCNICO NACIONAL ESCUELA SUPERIOR DE INGENIERÍA MECÁNICA Y ELÉCTRICA UNIDADAD CULHUACAN TESIS “CORTAFUEGOS Y SEGURIDAD EN EL INTERNET” Que como prueba escrita de su examen profesional para obtener el Título de: Ingeniero en Comunicaciones y Electrónica Presenta: EDGAR VICENTE JIMÉNEZ ÁVILA Asesores Ing. Gustavo Mendoza Campeche Lic. Martha Guadalupe Hernández Cuellar México D.F FEBRERO 2014. A mi padre Que gracias a su apoyo moral y económico me ha apoyado para la culminación de mis estudios y al mismo tiempo a la realización de esta obra, y que gracias a sus consejos me han ayudado a ser una mejor persona. Gracias papá TE AMO. A mi madre Gracias al amor y cariño que me has brindado, a los consejos para superarme día a día, al apoyo económico y moral para concluir mis estudios y de esta manera ser un profesionista y servir a la sociedad. A mis hermanas Gracias madrecita. TE AMO. Que gracias al apoyo moral, ánimos, cariño y consejos brindados que me han servido para poder concluir satisfactoriamente mis estudios. Gracias Fabiola, Cindy, Miriam. A toda mi familia Especialmente a mi abuelita Teresa, mi tío Fredy Macario, mi abuelito Macario, mi abuelita Costa, mi tía Marlene, mi tío Alberto, que me han enseñado que la A Yanel dedicación es sinónimo de triunfó. Gracias Gracias a tus consejos, a tus ánimos para no darme por vencido tan fácilmente y todo el cariño que me has brindado, que día con día me hacen ser una persona de bien para la sociedad, gracias por estar a mi lado en los momentos de alegría y de tristeza. -
Bohrende Fragen Wireguard
01/2018 VPN mit Wireguard aufsetzen Titelthema Bohrende Fragen Wireguard 38 Wer ein Virtual Private Network einrichten möchte, kämpft oftmals mit einer nicht ganz simplen Konfiguration. Wireguard verspricht, dass der Tunnelbau auch einfacher und flinker gelingen kann. Falko Benthin www.linux-magazin.de Quelltext und setzt auf starke Verschlüs- selungsalgorithmen, wofür Donenfeld Trevor Perrins Noise Protocol Framework [9] ins Boot nimmt. Für Zertifikate setzt das Wireguard-Protokoll auf Ed25519, für den Schlüsselaustausch auf Curve25519 (ECDHE) und für den Datentransport auf Chacha20-poly1305. Wireguard unterstützt allerdings nur eine kryptografische Suite, die sich je- doch bei Problemen ohne Weiteres aus- tauschen lässt. Anwender müssen ihre Verschlüsselungs-Suite also nicht mehr aus verschiedenen Chiffren selbst zusam- menbasteln. Das reduziert die Komple- xität und vermindert das Risiko von Si- cherheitslücken. Wireguard arbeitet aus © Péter Gudella, 123RF © Péter Sicht des Administrators zustandslos und bringt einen integrierten Schutz gegen VPNs (Virtual Private Networks) gelten In freien Wildbahn treffen Admins Wire- Denial-of-Service-Attacken mit. als sichere Nummer, wenn es darum guard bislang noch eher selten an. Das geht, das Home Office mit dem Firmen- dürfte vor allem daran liegen, dass das Installation und netz, Firmensitze mit der Zentrale oder Projekt noch nicht im offiziellen Linux- Inbetriebnahme Geschäftsreisende mit ihrer Kundenda- Kernel steckt und aktuell nur für Linux tenbank zu verbinden. Privatnutzer ver- und OS X verfügbar ist. Daneben feh- Die Repositories zahlreicher Distributio- wenden VPNs, um beispielsweise sicher len Sicherheits-Audits und das Protokoll nen bieten Wireguard bereits an, sodass über das Internet auf die heimische Wet- kann sich noch ändern. Experimentierfreudige es leicht mit Hilfe terstation mit angeschlossenem Daten- Trotzdem haben es manche VPN-Provi- der entsprechenden Paketverwaltung in- bankserver zuzugreifen. -
Pipenightdreams Osgcal-Doc Mumudvb Mpg123-Alsa Tbb
pipenightdreams osgcal-doc mumudvb mpg123-alsa tbb-examples libgammu4-dbg gcc-4.1-doc snort-rules-default davical cutmp3 libevolution5.0-cil aspell-am python-gobject-doc openoffice.org-l10n-mn libc6-xen xserver-xorg trophy-data t38modem pioneers-console libnb-platform10-java libgtkglext1-ruby libboost-wave1.39-dev drgenius bfbtester libchromexvmcpro1 isdnutils-xtools ubuntuone-client openoffice.org2-math openoffice.org-l10n-lt lsb-cxx-ia32 kdeartwork-emoticons-kde4 wmpuzzle trafshow python-plplot lx-gdb link-monitor-applet libscm-dev liblog-agent-logger-perl libccrtp-doc libclass-throwable-perl kde-i18n-csb jack-jconv hamradio-menus coinor-libvol-doc msx-emulator bitbake nabi language-pack-gnome-zh libpaperg popularity-contest xracer-tools xfont-nexus opendrim-lmp-baseserver libvorbisfile-ruby liblinebreak-doc libgfcui-2.0-0c2a-dbg libblacs-mpi-dev dict-freedict-spa-eng blender-ogrexml aspell-da x11-apps openoffice.org-l10n-lv openoffice.org-l10n-nl pnmtopng libodbcinstq1 libhsqldb-java-doc libmono-addins-gui0.2-cil sg3-utils linux-backports-modules-alsa-2.6.31-19-generic yorick-yeti-gsl python-pymssql plasma-widget-cpuload mcpp gpsim-lcd cl-csv libhtml-clean-perl asterisk-dbg apt-dater-dbg libgnome-mag1-dev language-pack-gnome-yo python-crypto svn-autoreleasedeb sugar-terminal-activity mii-diag maria-doc libplexus-component-api-java-doc libhugs-hgl-bundled libchipcard-libgwenhywfar47-plugins libghc6-random-dev freefem3d ezmlm cakephp-scripts aspell-ar ara-byte not+sparc openoffice.org-l10n-nn linux-backports-modules-karmic-generic-pae