Firewall Deployment for Scada and Process Control Networks Good Practice Guide
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Usability and Security of Personal Firewalls
Usability and Security of Personal Firewalls Almut Herzog^ and Nahid Shahmehri^ Dept. of Computer and Information Science, Linkopings universitet,Sweden {almhe, nahsh}@ida.liu.se Abstract. Effective security of a personal firewall depends on (1) the rule granularity and the implementation of the rule enforcement and (2) the correctness and granularity of user decisions at the time of an alert. A misconfigured or loosely configured firewall may be more dangerous than no firewall at all because of the user's false sense of security. This study assesses effective security of 13 personal firewalls by comparing possible granularity of rules as well as the usability of rule set-up and its influence on security. In order to evaluate usability, we have submitted each firewall to use cases that require user decisions and cause rule creation. In order to evaluate the firewalls' security, we analysed the created rules. In ad dition, we ran a port scan and replaced a legitimate, network-enabled application with another program to etssess the firewalls' behaviour in misuse cases. We have conducted a cognitive walkthrough paying special attention to user guidance and user decision support. We conclude that a stronger emphasis on user guidance, on conveying the design of the personal firewall application, on the principle of least privilege and on implications of default settings would greatly enhance both usability and security of personal firewalls. 1 Introduction In times where roaming users connect their laptops to a variety of public, pri vate and corporate wireless or wired networks and in times where more and more computers are always online, host-based firewalls implemented in soft ware, called personal firewalls, have become an important part of the security armour of a personal computer. -
EC-Council Network Security Administrator (Exam 312-38)
Product Information Sheet Exam 312-38 EC-Council Network Security Administrator (Exam 312-38) Page | 1 ENSAv4 Copyright © by EC-Council All Rights Reserved. Reproduction is Strictly Prohibited. Product Information Sheet Exam 312-38 EC-Council NSA is CNSS 4011 Certified The Committee on National Security Systems (CNSS)/National Security Agency (NSA) of the United States of America certified EC-Council’s Network Security Administrator (ENSA) course as having met 100% of the requirements as set out by the Committee on National Security Systems (CNSS) National Standards 4011. This certification is managed by the Information Assurance Courseware Evaluation (IACE) Program, National INFOSEC (Information Security) Education and Training Program and is administered by the U.S. National Security Agency (NSA). The Committee on National Security Systems (CNSS) and National Security Agency (NSA) has developed a nationally recognized certification program based on NSTISSI standards. The CNSS/NSA Certification is a government class certification that is recognized as the National Training Standard for Information Security Professionals Students who have obtained these certifications would have demonstrated a solid grasp of the principles as outlined in the 4011 standard. With this, EC-Council has joined the ranks of the organizations United States Air Force Academy, United States Military Academy, Air Force Institute of Technology and Carnegie Mellon University; all of whom have attained the National Training Standard for Information Security Professionals - the CNSS 4011. Introduction The EC-Council's Network Security Administrator certification looks at the network security in defensive view while the CEH certification program looks at the security in offensive mode. The ENSA program is designed to provide fundamental skills needed to analyze the internal and external security threats against a network, and to develop security policies that will protect an organization’s information. -
Ipv6 DMZ Web Service Technology Design Guide
IPv6 DMZ Web Service Technology Design Guide August 2014 Series Table of Contents Preface ........................................................................................................................................1 CVD Navigator .............................................................................................................................2 Use Cases .................................................................................................................................. 2 Scope ......................................................................................................................................... 2 Proficiency .................................................................................................................................. 2 Introduction .................................................................................................................................3 Technology Use Cases ............................................................................................................... 3 Use Case: Enable Native IPv6 Access for Network Traffic Between the Internet and a Web Server DMZ Network.............................................................................................................. 3 Use Case: Enable IPv6 Access for Network Traffic Between the Internet and an IPv4-only Web Server DMZ Network ..................................................................................................... 3 Design Overview ........................................................................................................................ -
Iptables with Shorewall!
Iptables with shorewall! Table of Contents 1. Install swarmlab-sec (Home PC) . 1 2. shorewall . 1 2.1. Installation . 2 3. Basic Two-Interface Firewall. 2 4. Shorewall Concepts . 3 4.1. zones — Shorewall zone declaration file . 3 4.2. interfaces — Shorewall interfaces file. 4 4.3. policy — Shorewall policy file . 4 4.4. rules — Shorewall rules file . 4 4.5. Compile then Execute . 4 5. Three-Interface Firewall. 5 5.1. zones . 6 5.2. interfaces . 6 5.3. policy . 7 5.4. rules . 7 5.5. masq - Shorewall Masquerade/SNAT definition file . 7 5.6. snat — Shorewall SNAT/Masquerade definition file . 8 5.7. Compile and Execute . 8 1. Install swarmlab-sec (Home PC) HowTo: See http://docs.swarmlab.io/lab/sec/sec.adoc.html NOTE Assuming you’re already logged in 2. shorewall Shorewall is an open source firewall tool for Linux that builds upon the Netfilter (iptables/ipchains) system built into the Linux kernel, making it easier to manage more complex configuration schemes by providing a higher level of abstraction for describing rules using text files. More: wikipedia 1 NOTE Our docker instances have only one nic to add more nic’s: create netowrk frist docker network create --driver=bridge --subnet=192.168.0.0/16 net1 docker network create --driver=bridge --subnet=192.168.0.0/16 net2 docker network create --driver=bridge --subnet=192.168.0.0/16 net3 then connect network to container connect network created to container docker network connect net1 master docker network connect net1 worker1 docker network connect net2 master docker network connect net2 worker2 now let’s look at the following image 2.1. -
Personal Firewalls Are a Necessity for Solo Users
Personal firewalls are a necessity for solo users COMPANY PRODUCT PLATFORM NOTES PRICE Aladdin Knowledge Systems Ltd. SeSafe Desktop Windows Combines antivirus with content filtering, blocking and $72 Arlington Heights, Ill. monitoring 847-808-0300 www.ealaddin.com Agnitum Inc. Outpost Firewall Pro Windows Blocks ads, sites, programs; limits access by specific times $40 Nicosia, Cyprus www.agnitum.com Computer Associates International Inc. eTrust EZ Firewall Windows Basic firewall available only by download $40/year Islandia, N.Y. 631-342-6000 my-etrust.com Deerfield Canada VisNetic Firewall Windows Stateful, packet-level firewall for workstations, mobile $101 (Canadian) St. Thomas, Ontario for Workstations users or telecommuters 519-633-3403 www.deerfieldcanada.ca Glucose Development Corp. Impasse Mac OS X Full-featured firewall with real-time logging display $10 Sunnyvale, Calif. www.glu.com Intego Corp. NetBarrier Personal Firewall Windows Full-featured firewall with cookie and ad blocking $50 Miami 512-637-0700 NetBarrier 10.1 Mac OS X Full-featured firewall $60 www.intego.com NetBarrier 2.1 Mac OS 8 and 9 Full-featured firewall $60 Internet Security Systems Inc. BlackIce Windows Consumer-oriented PC firewall $30 Atlanta 404-236-2600 RealSecure Desktop Windows Enterprise-grade firewall system for remote, mobile and wireless users Varies blackice.iss.net/ Kerio Technologies Inc. Kerio Personal Firewall Windows Bidirectional, stateful firewall with encrypted remote-management option $39 Santa Clara, Calif. 408-496-4500 www.kerio.com Lava Software Pty. Ltd. AdWare Plus Windows Antispyware blocks some advertiser monitoring but isn't $27 Falköping, Sweden intended to block surveillance utilities 46-0-515-530-14 www.lavasoft.de Network Associates Inc. -
How to Configure Some Basic Firewall and VPN Scenarios
AlliedWareTM OS How To | Configure Some Basic Firewall and VPN Scenarios Introduction This document provides examples that illustrate common configurations for security routers. You may want to make changes or enhancements to these configurations to customize them to your particular requirements. However, with the configurations provided here, you can be quickly operational with a reliable and secure Internet connection. What information will you find in this document? The first section provides the basic configuration for two likely methods that will be used for an Internet connection from the security router: z "Script A: basic Ethernet connection" on page 3 z "Script B: basic PPPoE configuration" on page 7 The second section provides three extra configurations to enable the router to support three popular forms of Virtual Private Network (VPN) connection, followed by a configuration for a Mail server on a DMZ. One or more of these additional scripts can be added to either of the basic configuration scripts: z "Script C: internal L2TP Network Server (LNS)" on page 11 z "Script D: IPsec tunnel" on page 13 z "Script E: PPTP server on LAN behind router" on page 16 Then the second section ends with an example in which private IP addresses are used on the DMZ LAN: z "Script F: DMZ using private addresses" on page 17 C613-16069-00 REV B www.alliedtelesis.com Introduction > Related How To Notes These six configuration examples are as general as possible, and no actual IP addresses have been specified. IP addresses are represented by placeholder names in angled brackets, for example, <dmz-ip-address>. -
Ethical Hacking and Countermeasures Version 6
Ethical Hacking and Countermeasures Version 6 Modu le LX Firewall Technologies News Source: http://www.internetnews.com/ Copyright © by EC-Council EC-Council All Rights Reserved. Reproduction is Strictly Prohibited Module Objective This modu le will fam iliar ize you wihith: • Firewalls • Hardware Firewalls • Software Firewalls • Mac OS X Firewall • LINUX Firewall • Windows Firewall Copyright © by EC-Council EC-Council All Rights Reserved. Reproduction is Strictly Prohibited Module Flow Firewalls Mac OS X Firewall Hardware Firewalls LINUX Firewall Software Firewalls Windows Firewall Copyright © by EC-Council EC-Council All Rights Reserved. Reproduction is Strictly Prohibited Firewalls: Introduction A firewall is a program or hardware device that protects the resources of a private netw ork from users of other networks It is responsible for the traffic to be allowed to pass, block, or refuse Firewall also works with the proxy server It helps in the protection of the private network from the users of the different network Copyright © by EC-Council EC-Council All Rights Reserved. Reproduction is Strictly Prohibited Hardware Firewalls Copyright © by EC-Council EC-Council All Rights Reserved. Reproduction is Strictly Prohibited Hardware Firewall Har dware Firewa lls are place d in the perime ter of the networ k It employs a technique of packet filtering It reads the header of a packet to find out the source and destination address The information is then compared with the set of predefined and/orand/ or user created rules that determine whether the packet is forwarded or dropped Copyright © by EC-Council EC-Council All Rights Reserved. Reproduction is Strictly Prohibited Netgear Firewall Features: • ItInterne t shar ing broa dbddband router and 4-port switch • 2x the speed and 4x times the coverage of a Wireless-G router • Configurable for private networks and public hotspots • Double Firewall protection from external hackers attacks • Touchless WiFi Security makes it easy to secure your network Copyright © by EC-Council EC-Council All Rights Reserved. -
Firewalls Firewall I Firewall Sono Una Componente O Un Insieme Di Componenti Che Limitano L'accesso Tra Una Rete Protetta Ed In
For TIC Pagina 1 di 4 Firewalls Firewall I firewall sono una componente o un insieme di componenti che limitano l'accesso tra una rete protetta ed Internet. Essi proteggono le organizzazioni in Internet fornendo accessi sicuri: garantendo che utenti validi possano accedere alle risorse di rete di cui hanno bisogno. Determinare chi sia un utente valido è compito del sistema di autenticazione; mentre determinare quali risorse un utente possa accedere è compito del sistema di autorizzazione (Access Control). Per fornire meccanismi di Access Control, un firewall richiede una comprensione profonda dei servizi e delle applicazioni utilizzati in rete. Ci sono fondamentalmente due tipi di firewall, quelli personali e quelli commerciali. I firewall personali I firewall personali sono programmi che proteggono un computer quando questo è collegato ad una rete. Un personal firewall analizza i canali di comunicazione, negando l'elaborazione del traffico ritenuto rischioso sia in ingresso che in uscita. Di seguito si analizzano le caratteristiche di alcuni prodotti molto diffusi e si riassumono le caratteristiche comparate, in una tabella. z Tiny Personal Firewall è un prodotto facile da configurare ed utilizzare che protegge completamente un computer dagli attacchi. Tiny Personal Firewall include dei wizard semplici per il rilevamento delle intrusioni che individuano attività sconosciute e chiedono all'utente di impostare i parametri del firewall. Appositi wizard rilevano i tentativi di connessione alle porte di comunicazione e creano delle regole di filtering in base all'indicazioni dell'utente. Per garantire che dei cavalli di Troia non si nascondano all'interno di applicazioni viene utilizzata la firma digitale con algoritmo MD5. -
Guidelines on Firewalls and Firewall Policy
Special Publication 800-41 Revision 1 Guidelines on Firewalls and Firewall Policy Recommendations of the National Institute of Standards and Technology Karen Scarfone Paul Hoffman NIST Special Publication 800-41 Guidelines on Firewalls and Firewall Revision 1 Policy Recommendations of the National Institute of Standards and Technology Karen Scarfone Paul Hoffman C O M P U T E R S E C U R I T Y Computer Security Division Information Technology Laboratory National Institute of Standards and Technology Gaithersburg, MD 20899-8930 September 2009 U.S. Department of Commerce Gary Locke, Secretary National Institute of Standards and Technology Patrick D. Gallagher, Deputy Director GUIDELINES ON FIREWALLS AND FIREWALL POLICY Reports on Computer Systems Technology The Information Technology Laboratory (ITL) at the National Institute of Standards and Technology (NIST) promotes the U.S. economy and public welfare by providing technical leadership for the nation’s measurement and standards infrastructure. ITL develops tests, test methods, reference data, proof of concept implementations, and technical analysis to advance the development and productive use of information technology. ITL’s responsibilities include the development of technical, physical, administrative, and management standards and guidelines for the cost-effective security and privacy of sensitive unclassified information in Federal computer systems. This Special Publication 800-series reports on ITL’s research, guidance, and outreach efforts in computer security and its collaborative activities with industry, government, and academic organizations. National Institute of Standards and Technology Special Publication 800-41 Revision 1 Natl. Inst. Stand. Technol. Spec. Publ. 800-41 rev1, 48 pages (Sep. 2009) Certain commercial entities, equipment, or materials may be identified in this document in order to describe an experimental procedure or concept adequately. -
"Service Unavailable" Error, Contact Norton at to Find out How to Configure It Correctly
Service Unavailable, Offline, or Action Cancelled errors When I try to sign in to RealPlayer, I get a "Service Unavailable," "You are currently offline," or "Action cancelled" error. How can I fix this? You may need to unblock the program in your computer's firewall if: - You get a 'Service Unavailable' or 'you are working offline, click here to refresh' error while trying to sign in or view pages, or an 'Action cancelled' message when you try to play a clip (or view a live video feed such as Big Brother). - It is having problems retrieving CD information Norton, McAfee, ZoneAlarm, Freedom, BlackIce, Windows Firewall, and Microsoft ISA server are some of the most common brands of firewall software. Instructions for these follow: Norton Firewall: 1. Close the program. 2. Double-click the Norton Firewall icon in the Windows task bar. 3. Click the Configure button on the right side. 4. Click the Program Control tab at the top. 5. Locate the program (RealPlayer or Rhapsody). 6. Highlight and click Remove. 7. Close Norton Personal Firewall. 8. Open the program and you will get a prompt to grant access to the Internet. 9. Choose Permit and check Always use this action. 10. Restart the computer. If you are still receiving a "Service Unavailable" error, contact Norton at http://www.symantec.com/techsupp/ to find out how to configure it correctly. McAfee Personal Firewall: There are two possible methods for McAfee Personal Firewall. You can choose either one: First method: 1. Double-click the firewall icon in the Windows task bar. -
Internet DMZ Equipment Policy
Internet DMZ Equipment Policy CS Department Internet DMZ Equipment Policy 1.0 Purpose The purpose of this policy is to define standards to be met by all equipment owned and/or operated by SUNY Stony Brook CS department located outside SUNY Stony Brook CS department's Internet firewalls. These standards are designed to minimize the potential exposure to SUNY Stony Brook CS department from the loss of sensitive or department confidential data, intellectual property, damage to public image etc., which may follow from unauthorized use of SUNY Stony Brook CS department resources. Devices that are Internet facing and outside the SUNY Stony Brook CS department firewall are considered part of the "de-militarized zone" (DMZ) and are subject to this policy. These devices (network and host) are particularly vulnerable to attack from the Internet since they reside outside the department firewalls. The policy defines the following standards: Ownership responsibility Secure configuration requirements Operational requirements Change control requirement 2.0 Scope All equipment or devices deployed in a DMZ owned and/or operated by SUNY Stony Brook CS department including hosts, routers, switches, etc.) and/or registered in any Domain Name System (DNS) domain owned by SUNY Stony Brook CS department, must follow this policy. This policy also covers any host device outsourced or hosted at external/third-party service providers, if that equipment resides in the "cs.sunysb.edu" domain or appears to be owned by SUNY Stony Brook CS department. All new equipment which falls under the scope of this policy must be configured according to the referenced configuration documents, unless a waiver is obtained from the Director of Labs. -
DMZ Implementations
DMZ Implementations Table of Contents DMZ – De-Militarized Zone ............................................................................................................. 2 DMZ Reiteration -1.......................................................................................................................... 3 DMZ Reiteration -2.......................................................................................................................... 4 DMZ Implementations .................................................................................................................... 6 Bare DMZ ........................................................................................................................................ 7 Web Servers .................................................................................................................................... 8 DNS Servers ................................................................................................................................... 10 Unified Threat Management (UTM) ............................................................................................. 11 UTM – URL Filter ........................................................................................................................... 13 UTM – Content Inspection ............................................................................................................ 14 UTM – Malware Inspection ..........................................................................................................