Host Security. Host Security: Pro
|
|
|
- Ferdinand Stone
- 8 years ago
- Views:
Transcription
1 Host Security 1 Host Security: Pro Maintaining strong security on host avoids the crunchy shell around soft, chewy center problem If perimeter security fails, network is often wide open to attack May rely on vendor-provided security features 2 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 1
2 Host Security: Con Vendors slow to respond to security holes Effort scales with number of hosts being protected Requires constant upkeep Reduces host-to-host trust or increases dependency on common security policy between peer hosts 3 Network services Historically, bugs in network servers are a major weakness in networked systems Turning off unnecessary services is desirable Turning off services may be difficult and vendor specific 4 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 2
3 Reducing services (most systems) Edit /etc/inetd.conf (BSD systems) Edit /etc/rc and /etc/rc.local (SYSV systems) Edit or delete entries in inittab and /etc/rc.d Check process table and output from netstat. Reboot system, make sure it boots OK, and repeat 5 Ident Attempts to get advisory information about originating user of connection Requires daemon running on remote client system Not high quality authentication Useful for backtracking attacks 6 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 3
4 Password files On many UNIX systems password files are world readable Easy to attempt dictionary attacks If at all possible use shadowed password files Not a solution but it s better than nothing Securely distributing password files is a hard problem 7 Yellow pages/nis Minimal security Within network it is easy to download a system s password file If using NIS for passwords make sure that NIS access is blocked from Internet 8 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 4
5 Npasswd prohibits users from choosing easily guessed passwords Many O/S require minimum password lengths or use of at least one special character 9 S/key One-time authentication system based on multiple invocations of hash algorithm May be used with hardcopy password lists May be computed on laptop Available: ftp://thumper.bellcore.com/pub/nmh/ 10 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 5
6 Host Security Tools Expert Tools know about and look for problems Based on past experience Won t recognize magic security holes Audit and Monitoring Good for damage control Useful for identifying well-known attacks in progress 11 Host Security Tools (cont) Reactive Maintain information about proper state of system and identify deviations from the norm Information Security Deny an attacker useful information This is NOT the same as security by obscurity 12 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 6
7 Expert Tools: COPS COPS contains heuristics of common system weaknesses Analyzes: File ownership, Directory ownership, Device ownership, User s.rhosts files, etc, etc, etc... Does a good job of finding well-known holes 13 Expert Tools: ISS ISS: Internet Security Scanner - scans for known host networking software weaknesses Domain names Common login names RPC portmapper reachability NFS reachability Sendmail debug hole, etc, etc, etc (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 7
8 Expert Tools: STROBE Super-Optimised TCP Port Surveyor locates and describes all listening (open) TCP ports on one or more remote hosts approximates parallel finite state machine can port scan entire subdomains Can be used in tandem with ISS 15 Expert Tools: SATAN System Administrators Tool for Analyzing Networks Easy to use graphical interface searches widening circles of subnets uses DNS information three scan modes: light, medium, heavy heavy generates serious ICMP traffic, can crash some systems 16 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 8
9 Commercial Tools Netprobe Runs up to 85 tests per host 2 modes, noisy and quiet New offering from Infostructure Services & Technologies Pingware Analysis tool similar to SATAN Delivered as consulting service by Bellcore 17 Expert Tools: Crack Expert tool used for identifying weak passwords Attempts to find matching encryptions using a large dictionary Typically approximately 5% of any given password file is guessable Used by systems administrators to scan for weak passwords and warn users 18 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 9
10 Audit Tools: Gabriel & Courtney Anti-SATAN early warning systems Courtney developed by CIAC at Lawrence Livermore Labs uses tcpdump to count number of new services a machine originates within a certain time window Gabriel distributed free by Los Altos Technologies 19 Expert & Audit Tools: TAMU Toolkit Developed in response to campus-wide breakins in August of 1992 Suite of tools for packet filtering, network monitoring and system cleanup 20 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 10
11 Drawbridge Part of TAMU Toolkit Packet filtering firewall package controls access on a host-by-host and port-byport basis at T1 speeds Use of compiled tables allows very complex filters with little penalty Compromise between security and flexibility 21 Tiger Files Part of TAMU Toolkit Designed for ease of use - can be run by end users on own machines Includes checks for mail aliases and cron jobs password file discrepancies file permissions (maintains database) 22 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 11
12 Netlog Part of TAMU Toolkit Advanced sniffer system for network monitoring tcplogger udplogger netwatch TCP & UDP loggers for SunOs 4.x only 23 SPAR Part of TAMU Toolkit Show Process Accounting Records An offspring of the extract utility Much faster than lastcomm 24 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 12
13 Audit Tools: Swatch System Watcher scans for known patterns in system logs Invokes specified filter when pattern is detected Warns about multiple failed logins Warns about bad SU attempts Can send alarms via or pager 25 Audit Tools: Watcher Maintains saved state of system files or output Notifies administrator when boundaries are exceeded Examples Disks filling up Processes running wild Defunct processes 26 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 13
14 Audit Tools: UNIX Accounting UNIX accounting tools maintain timestamped records of program execution May be extremely useful for tracking intruders Process accounting enabled for chargeback purposes may finger bad guys 27 Audit Tools: TCP_Wrappers Log connections to TCP and UDP services May selectively permit or deny based on originating host Useful for restricting service as well as audit May help detect port sniffers May help detect NFS probers 28 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 14
15 Audit Tools: ARPWATCH Monitors ethernet activity Keeps database of ethernet/ip address pairings Uses tcpdump, and libcap, an LBL interface for user level packet capture Developed at Lawrence Berkeley Labs 29 Reactive Tools: Tripwire Builds cryptographic checksums of system May be stored on write-protected media Re-running checksums will list all files that have changed since last scan Effective at finding trojan horses or trapdoored programs after breakins 30 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 15
16 Reactive Tools: Archives Checksumming will only tell you that a file has changed Archival media let you determine exactly how it changed Backups are useful for security as well as crash recovery Some sites save copies of important files and compare them nightly 31 (C)Copyright, 1997, Marcus J. Ranum, all rights reserved 16
1 hours, 30 minutes, 38 seconds Heavy scan. All scanned network resources. Copyright 2001, FTP access obtained
home Network Vulnerabilities Detail Report Grouped by Vulnerability Report Generated by: Symantec NetRecon 3.5 Licensed to: X Serial Number: 0182037567 Machine Scanned from: ZEUS (192.168.1.100) Scan Date:
Security Mgt. Tools and Subsystems
Security Mgt. Tools and Subsystems some attack and defense security tools at work Reconaissance Passive Active Penetration Classes of tools (network-bound) Passive Reconaissance Passively listen and analyze
86-10-15 The Self-Hack Audit Stephen James Payoff
86-10-15 The Self-Hack Audit Stephen James Payoff As organizations continue to link their internal networks to the Internet, system managers and administrators are becoming increasingly aware of the need
Network Security: From Firewalls to Internet Critters Some Issues for Discussion
Network Security: From Firewalls to Internet Critters Some Issues for Discussion Slide 1 Presentation Contents!Firewalls!Viruses!Worms and Trojan Horses!Securing Information Servers Slide 2 Section 1:
Intrusion Detection and Intrusion Prevention on a Large Network: A Case Study
THE ADVANCED COMPUTING SYSTEMS ASSOCIATION The following paper was originally published in the Proceedings of the Workshop on Intrusion Detection and Network Monitoring Santa Clara, California, USA, April
Network Security and Firewall 1
Department/program: Networking Course Code: CPT 224 Contact Hours: 96 Subject/Course WEB Access & Network Security: Theoretical: 2 Hours/week Year Two Semester: Two Prerequisite: NET304 Practical: 4 Hours/week
CSE331: Introduction to Networks and Security. Lecture 17 Fall 2006
CSE331: Introduction to Networks and Security Lecture 17 Fall 2006 Announcements Project 2 is due next Weds. Homework 2 has been assigned: It's due on Monday, November 6th. CSE331 Fall 2004 2 Summary:
Firewalls. Ola Flygt Växjö University, Sweden http://w3.msi.vxu.se/users/ofl/ Ola.Flygt@vxu.se +46 470 70 86 49. Firewall Design Principles
Firewalls Ola Flygt Växjö University, Sweden http://w3.msi.vxu.se/users/ofl/ Ola.Flygt@vxu.se +46 470 70 86 49 1 Firewall Design Principles Firewall Characteristics Types of Firewalls Firewall Configurations
CS 392/CS 681 - Computer Security. Module 17 Auditing
CS 392/CS 681 - Computer Security Module 17 Auditing Auditing Audit Independent review and examination of records and activities to assess the adequacy of system controls, to ensure compliance with established
Abstract. 1. Introduction. 1.1. Current Environment. University of California, Los Alamos National Laboratory. Telephone 505-667-0096 Fax 505-665-3456
Automated Information System (AIS) Alarm System Author(s) Organizational Affiliation William Hunteman University of California, Los Alamos National Laboratory Telephone 505-667-0096 Fax 505-665-3456 E-mail
TECHNICAL NOTE 01/02 PROTECTING YOUR COMPUTER NETWORK
TECHNICAL NOTE 01/02 PROTECTING YOUR COMPUTER NETWORK 2002 This paper was previously published by the National Infrastructure Security Co-ordination Centre (NISCC) a predecessor organisation to the Centre
Security Maintenance Practices. IT 4823 Information Security Administration. Patches, Fixes, and Revisions. Hardening Operating Systems
IT 4823 Information Security Administration Securing Operating Systems June 18 Security Maintenance Practices Basic proactive security can prevent many problems Maintenance involves creating a strategy
My FreeScan Vulnerabilities Report
Page 1 of 6 My FreeScan Vulnerabilities Report Print Help For 66.40.6.179 on Feb 07, 008 Thank you for trying FreeScan. Below you'll find the complete results of your scan, including whether or not the
Unix Network Security
/ UnixNetworkSecuirty-05-2004-CIT-ACDS Unix Network Security Mehmet Balman / Introduction A machine connected to phone lines or local network has the potential for intruders. Therefore security aspect
Topics in Network Security
Topics in Network Security Jem Berkes MASc. ECE, University of Waterloo B.Sc. ECE, University of Manitoba www.berkes.ca February, 2009 Ver. 2 In this presentation Wi-Fi security (802.11) Protecting insecure
CMSC 421, Operating Systems. Fall 2008. Security. URL: http://www.csee.umbc.edu/~kalpakis/courses/421. Dr. Kalpakis
CMSC 421, Operating Systems. Fall 2008 Security Dr. Kalpakis URL: http://www.csee.umbc.edu/~kalpakis/courses/421 Outline The Security Problem Authentication Program Threats System Threats Securing Systems
Network and Host-based Vulnerability Assessment
Network and Host-based Vulnerability Assessment A guide for information systems and network security professionals 6600 Peachtree-Dunwoody Road 300 Embassy Row Atlanta, GA 30348 Tel: 678.443.6000 Toll-free:
Port Scanning and Vulnerability Assessment. ECE4893 Internetwork Security Georgia Institute of Technology
Port Scanning and Vulnerability Assessment ECE4893 Internetwork Security Georgia Institute of Technology Agenda Reconnaissance Scanning Network Mapping OS detection Vulnerability assessment Reconnaissance
Overview of Network Security The need for network security Desirable security properties Common vulnerabilities Security policy designs
Overview of Network Security The need for network security Desirable security properties Common vulnerabilities Security policy designs Why Network Security? Keep the bad guys out. (1) Closed networks
Host Hardening. OS Vulnerability test. CERT Report on systems vulnerabilities. (March 21, 2011)
Host Hardening (March 21, 2011) Abdou Illia Spring 2011 CERT Report on systems vulnerabilities Source: CERT Report @ http://www.kb.cert.org/vuls/bymetric 2 OS Vulnerability test Source: http://www.omninerd.com/articles/2006_operating_system_vulnerabilit
How To Set Up An Ip Firewall On Linux With Iptables (For Ubuntu) And Iptable (For Windows)
Security principles Firewalls and NAT These materials are licensed under the Creative Commons Attribution-Noncommercial 3.0 Unported license (http://creativecommons.org/licenses/by-nc/3.0/) Host vs Network
Special Issues for Penetration testing of Firewall
보안공학연구논문지 (Journal of Security Engineering), 제 5권 제 4 호, 2008년 8월 Special Issues for Penetration testing of Firewall Hoon Ko 1) Abstract A firewall is a device or software that controls the traffic of
Operating System Security Rules
SECTION 9 Operating System Security Rules This section addresses best practices for setting up security within operating systems. Authentication, file protection, virus checking, file sharing, network
Network Incident Report
To submit copies of this form via facsimile, please FAX to 202-406-9233. Network Incident Report United States Secret Service Financial Crimes Division Electronic Crimes Branch Telephone: 202-406-5850
NovaTech NERC CIP Compliance Document and Product Description Updated June 2015
NovaTech NERC CIP Compliance Document and Product Description Updated June 2015 This document describes the NovaTech Products for NERC CIP compliance and how they address the latest requirements of NERC
SYSTEM ADMINISTRATION MTAT.08.021 LECTURE 8 SECURITY
SYSTEM ADMINISTRATION MTAT.08.021 LECTURE 8 SECURITY Prepared By: Amnir Hadachi and Artjom Lind University of Tartu, Institute of Computer Science amnir.hadachi@ut.ee / artjom.lind@ut.ee 1 OUTLINE 1.Is
Nixu SNS Security White Paper May 2007 Version 1.2
1 Nixu SNS Security White Paper May 2007 Version 1.2 Nixu Software Limited Nixu Group 2 Contents 1 Security Design Principles... 3 1.1 Defense in Depth... 4 1.2 Principle of Least Privilege... 4 1.3 Principle
Intrusion Detection. Overview. Intrusion vs. Extrusion Detection. Concepts. Raj Jain. Washington University in St. Louis
Intrusion Detection Overview Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@cse.wustl.edu Audio/Video recordings of this lecture are available at: http://www.cse.wustl.edu/~jain/cse571-14/
E-commerce Production Firewalls
E-commerce Production Firewalls A Proper Security Design 2006 Philip J. Balsley. This document and all information contained herein is the sole and exclusive property of Philip J. Balsley. All rights reserved.
Intrusion Detection Systems
Intrusion Detection Systems Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@cse.wustl.edu Audio/Video recordings of this lecture are available at: http://www.cse.wustl.edu/~jain/cse571-07/
Internet Security Seminar
Center for Technology in Government University at Albany, SUNY 1535 Western Avenue Albany, NY 12203 Phone: (518) 442-3892 Fax: (518) 442-3886 Email: info@ctg.albany.edu http://www.ctg.albany.edu 1996 Center
A43. Modern Hacking Techniques and IP Security. By Shawn Mullen. Las Vegas, NV IBM TRAINING. IBM Corporation 2006
IBM TRAINING A43 Modern Hacking Techniques and IP Security By Shawn Mullen Las Vegas, NV 2005 CSI/FBI US Computer Crime and Computer Security Survey 9 out of 10 experienced computer security incident in
What is Firewall? A system designed to prevent unauthorized access to or from a private network.
What is Firewall? A system designed to prevent unauthorized access to or from a private network. What is Firewall? (cont d) Firewall is a set of related programs, located at a network gateway server. Firewalls
Linux Boot Camp. Our Lady of the Lake University Computer Information Systems & Security Department Kevin Barton Artair Burnett
Linux Boot Camp Our Lady of the Lake University Computer Information Systems & Security Department Kevin Barton Artair Burnett Schedule for the Week Schedule for the Week Mon Welcome from Enrollment Management
SCP - Strategic Infrastructure Security
SCP - Strategic Infrastructure Security Lesson 1 - Cryptogaphy and Data Security Cryptogaphy and Data Security History of Cryptography The number lock analogy Cryptography Terminology Caesar and Character
Plesk 11 Manual. Fasthosts Customer Support
Fasthosts Customer Support Plesk 11 Manual This guide covers everything you need to know in order to get started with the Parallels Plesk 11 control panel. Contents Introduction... 3 Before you begin...
Network Traffic Analysis
2013 Network Traffic Analysis Gerben Kleijn and Terence Nicholls 6/21/2013 Contents Introduction... 3 Lab 1 - Installing the Operating System (OS)... 3 Lab 2 Working with TCPDump... 4 Lab 3 - Installing
NIS Security Weaknesses and Risk Analysis
A Unix Network Protocol Security Study: Network Information Service Introduction David K. Hess, David R. Safford and Udo W. Pooch Texas A&M University dhess@cs.tamu.edu This note is a study of the security
Cannot send Autosupport e-mail, error message: Unknown User
Cannot send Autosupport e-mail, error message: Unknown User Symptoms Unable to send Autosupport e-mails and the following error message is reported: asup.smtp.fail http://now.netapp.com/eservice/ems?emsaction=details&eventid=200573&software=ontap&em
Track 2 Workshop PacNOG 7 American Samoa. Firewalling and NAT
Track 2 Workshop PacNOG 7 American Samoa Firewalling and NAT Core Concepts Host security vs Network security What is a firewall? What does it do? Where does one use it? At what level does it function?
Network Security Foundations
Network Security Foundations Matthew Strebe O San SrBBC Francisco London Introduction xv Chapter 1 Security Principles 1 Why Computers Aren't Secure 2 The History of Computer Security 4-1945 5 1945-1955
Make a folder named Lab3. We will be using Unix redirection commands to create several output files in that folder.
CMSC 355 Lab 3 : Penetration Testing Tools Due: September 31, 2010 In the previous lab, we used some basic system administration tools to figure out which programs where running on a system and which files
How To Set Up A Network Map In Linux On A Ubuntu 2.5 (Amd64) On A Raspberry Mobi) On An Ubuntu 3.5.2 (Amd66) On Ubuntu 4.5 On A Windows Box
CSC-NETLAB Packet filtering with Iptables Group Nr Name1 Name2 Name3 Date Instructor s Signature Table of Contents 1 Goals...2 2 Introduction...3 3 Getting started...3 4 Connecting to the virtual hosts...3
7 Network Security. 7.1 Introduction 7.2 Improving the Security 7.3 Internet Security Framework. 7.5 Absolute Security?
7 Network Security 7.1 Introduction 7.2 Improving the Security 7.3 Internet Security Framework 7.4 Firewalls 7.5 Absolute Security? 7.1 Introduction Security of Communications data transport e.g. risk
Getting Started in Red Hat Linux An Overview of Red Hat Linux p. 3 Introducing Red Hat Linux p. 4 What Is Linux? p. 5 Linux's Roots in UNIX p.
Preface p. ix Getting Started in Red Hat Linux An Overview of Red Hat Linux p. 3 Introducing Red Hat Linux p. 4 What Is Linux? p. 5 Linux's Roots in UNIX p. 6 Common Linux Features p. 8 Primary Advantages
What is a Firewall? A choke point of control and monitoring Interconnects networks with differing trust Imposes restrictions on network services
Firewalls What is a Firewall? A choke point of control and monitoring Interconnects networks with differing trust Imposes restrictions on network services only authorized traffic is allowed Auditing and
Fifty Critical Alerts for Monitoring Windows Servers Best practices
Fifty Critical Alerts for Monitoring Windows Servers Best practices The importance of consolidation, correlation, and detection Enterprise Security Series White Paper 6990 Columbia Gateway Drive, Suite
Host/Platform Security. Module 11
Host/Platform Security Module 11 Why is Host/Platform Security Necessary? Firewalls are not enough All access paths to host may not be firewall protected Permitted traffic may be malicious Outbound traffic
UNISOL SysAdmin. SysAdmin helps systems administrators manage their UNIX systems and networks more effectively.
1. UNISOL SysAdmin Overview SysAdmin helps systems administrators manage their UNIX systems and networks more effectively. SysAdmin is a comprehensive system administration package which provides a secure
information security and its Describe what drives the need for information security.
Computer Information Systems (Forensics Classes) Objectives for Course Challenges CIS 200 Intro to Info Security: Includes managerial and Describe information security and its critical role in business.
Firewall Architectures of E-Commerce
Firewall Architectures of E-Commerce EE657 Midterm Project Presentation Professor Hwang Andy Yan Four State-of-the-art Firewall Architectures Description of 4 solutions IBM enetwork Compaq AXENT s Raptor
Denial Of Service. Types of attacks
Denial Of Service The goal of a denial of service attack is to deny legitimate users access to a particular resource. An incident is considered an attack if a malicious user intentionally disrupts service
Security+ Guide to Network Security Fundamentals, Third Edition Chapter 9 Performing Vulnerability Assessments
Security+ Guide to Network Security Fundamentals, Third Edition Chapter 9 Performing Vulnerability Assessments Objectives Define risk and risk management Describe the components of risk management List
Stateful Inspection Technology
Stateful Inspection Technology Security Requirements TECH NOTE In order to provide robust security, a firewall must track and control the flow of communication passing through it. To reach control decisions
Internet Worms, Firewalls, and Intrusion Detection Systems
Internet Worms, Firewalls, and Intrusion Detection Systems Brad Karp UCL Computer Science CS 3035/GZ01 12 th December 2013 Outline Internet worms Self-propagating, possibly malicious code spread over Internet
Introduction of Intrusion Detection Systems
Introduction of Intrusion Detection Systems Why IDS? Inspects all inbound and outbound network activity and identifies a network or system attack from someone attempting to compromise a system. Detection:
Firewalls & Intrusion Detection
Firewalls & Intrusion Detection CS 594 Special Topics/Kent Law School: Computer and Network Privacy and Security: Ethical, Legal, and Technical Consideration 2007, 2008 Robert H. Sloan Security Intrusion
Locking down a Hitachi ID Suite server
Locking down a Hitachi ID Suite server 2016 Hitachi ID Systems, Inc. All rights reserved. Organizations deploying Hitachi ID Identity and Access Management Suite need to understand how to secure its runtime
VPN Lesson 2: VPN Implementation. Summary
VPN Lesson 2: VPN Implementation Summary 1 Notations VPN client (ok) Firewall Router VPN firewall VPN router VPN server VPN concentrator 2 Basic Questions 1. VPN implementation options for remote users
Network- vs. Host-based Intrusion Detection
Network- vs. Host-based Intrusion Detection A Guide to Intrusion Detection Technology 6600 Peachtree-Dunwoody Road 300 Embassy Row Atlanta, GA 30348 Tel: 678.443.6000 Toll-free: 800.776.2362 Fax: 678.443.6477
Overview. Packet filter
Computer Network Lab 2015 Fachgebiet Technische h Informatik, Joachim Zumbrägel Overview Security Type of attacks Firewalls Protocols Packet filter Security Security means, protect information (during
SecureDoc Disk Encryption Cryptographic Engine
SecureDoc Disk Encryption Cryptographic Engine FIPS 140-2 Non-Proprietary Security Policy Abstract: This document specifies Security Policy enforced by SecureDoc Cryptographic Engine compliant with the
Sonian Getting Started Guide October 2008
Sonian Getting Started Guide October 2008 Sonian, Inc. For Authorized Use Only 1 Create your new archiving account 3 Configure your firewall for IMAP collections 4 (Skip this step if you will be using
Security Type of attacks Firewalls Protocols Packet filter
Overview Security Type of attacks Firewalls Protocols Packet filter Computer Net Lab/Praktikum Datenverarbeitung 2 1 Security Security means, protect information (during and after processing) against impairment
Intrusion Detection Systems (IDS)
Intrusion Detection Systems (IDS) What are They and How do They Work? By Wayne T Work Security Gauntlet Consulting 56 Applewood Lane Naugatuck, CT 06770 203.217.5004 Page 1 6/12/2003 1. Introduction Intrusion
Authentication Types. Password-based Authentication. Off-Line Password Guessing
Authentication Types Chapter 2: Security Techniques Background Secret Key Cryptography Public Key Cryptography Hash Functions Authentication Chapter 3: Security on Network and Transport Layer Chapter 4:
CSE331: Introduction to Networks and Security. Lecture 32 Fall 2004
CSE331: Introduction to Networks and Security Lecture 32 Fall 2004 Hackers / Intruders External attacks Typical hacker Exploits carried out remotely Does not have an account on the remote machine Insider
Global Partner Management Notice
Global Partner Management Notice Subject: Critical Vulnerabilities Identified to Alert Payment System Participants of Data Compromise Trends Dated: May 4, 2009 Announcement: To support compliance with
Configuring Logging. Information About Logging CHAPTER
52 CHAPTER This chapter describes how to configure and manage logs for the ASASM/ASASM and includes the following sections: Information About Logging, page 52-1 Licensing Requirements for Logging, page
Firewalls and Software Updates
Firewalls and Software Updates License This work by Z. Cliffe Schreuders at Leeds Metropolitan University is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. Contents General
Firewalls, Tunnels, and Network Intrusion Detection
Firewalls, Tunnels, and Network Intrusion Detection 1 Part 1: Firewall as a Technique to create a virtual security wall separating your organization from the wild west of the public internet 2 1 Firewalls
URL: http://crosswire.org/~jmarsden/talks/hardening-ubuntu/hardening-ubuntu.html
Hardening Ubuntu Date: 12 Mar 2011 Author: Jonathan Marsden jmarsden@fastmail.fm URL: http://crosswire.org/~jmarsden/talks/hardening-ubuntu/hardening-ubuntu.html Contents Introduction The BASICS (the bare
SY0-201. system so that an unauthorized individual can take over an authorized session, or to disrupt service to authorized users.
system so that an unauthorized individual can take over an authorized session, or to disrupt service to authorized users. From a high-level standpoint, attacks on computer systems and networks can be grouped
IDS / IPS. James E. Thiel S.W.A.T.
IDS / IPS An introduction to intrusion detection and intrusion prevention systems James E. Thiel January 14, 2005 S.W.A.T. Drexel University Overview Intrusion Detection Purpose Types Detection Methods
CSE331: Introduction to Networks and Security. Lecture 15 Fall 2006
CSE331: Introduction to Networks and Security Lecture 15 Fall 2006 Worm Research Sources "Inside the Slammer Worm" Moore, Paxson, Savage, Shannon, Staniford, and Weaver "How to 0wn the Internet in Your
Internet Firewalls and Security. A Technology Overview
3 Com Technical Papers Internet Firewalls and Security A Technology Overview Internet Firewalls and Security A Technology Overview Contents Internet Firewalls 2 Benefits of an Internet Firewall 2 Limitations
Firewalls. Chapter 3
Firewalls Chapter 3 1 Border Firewall Passed Packet (Ingress) Passed Packet (Egress) Attack Packet Hardened Client PC Internet (Not Trusted) Hardened Server Dropped Packet (Ingress) Log File Internet Border
Linux Security. By: Matthew Porter
Linux Security By: Matthew Porter A[UNIX] was not designed from the start to be secure. It was designed with the necessary characteristics to make security serviceable.@ - Dennis Ritchie Basic Security
Firewalls, IDS and IPS
Session 9 Firewalls, IDS and IPS Prepared By: Dr. Mohamed Abd-Eldayem Ref.: Corporate Computer and Network Security By: Raymond Panko Basic Firewall Operation 2. Internet Border Firewall 1. Internet (Not
Port Scanning. Objectives. Introduction: Port Scanning. 1. Introduce the techniques of port scanning. 2. Use port scanning audit tools such as Nmap.
Port Scanning Objectives 1. Introduce the techniques of port scanning. 2. Use port scanning audit tools such as Nmap. Introduction: All machines connected to a LAN or connected to Internet via a modem
This chapter covers the following topics: Why Network Security Is Necessary Secure Network Design Defined Categorizing Network Security Threats How
This chapter covers the following topics: Why Network Security Is Necessary Secure Network Design Defined Categorizing Network Security Threats How Network Security Is Breached Network Security Policy
INTRUSION DETECTION SYSTEMS and Network Security
INTRUSION DETECTION SYSTEMS and Network Security Intrusion Detection System IDS A layered network security approach starts with : A well secured system which starts with: Up-to-date application and OS
2.4: Authentication Authentication types Authentication schemes: RSA, Lamport s Hash Mutual Authentication Session Keys Trusted Intermediaries
Chapter 2: Security Techniques Background Secret Key Cryptography Public Key Cryptography Hash Functions Authentication Chapter 3: Security on Network and Transport Layer Chapter 4: Security on the Application
Windows Client/Server Local Area Network (LAN) System Security Lab 2 Time allocation 3 hours
Windows Client/Server Local Area Network (LAN) System Security Lab 2 Time allocation 3 hours Introduction The following lab allows the trainee to obtain a more in depth knowledge of network security and
CS 356 Lecture 17 and 18 Intrusion Detection. Spring 2013
CS 356 Lecture 17 and 18 Intrusion Detection Spring 2013 Review Chapter 1: Basic Concepts and Terminology Chapter 2: Basic Cryptographic Tools Chapter 3 User Authentication Chapter 4 Access Control Lists
How To Use Truecrypt For Free On A Pc Or Mac Or Mac (For A Laptop) For A Long Time (For Free) For Your Computer Or Ipad Or Ipa (For Mac) For Free (For Your Computer) For Long
Advanced Open-Source /Free Solutions for Home and Small Business Owners Robert Baldi, CISSP- ISSEP TOPICS Encryption Backups Audits Wireless Security Network Security Open Source Goodness ENCRYPTION Encryption
Blended Security Assessments
Blended Security Assessments Combining Active, Passive and Host Assessment Techniques October 12, 2009 (Revision 9) Renaud Deraison Director of Research Ron Gula Chief Technology Officer Table of Contents
Are Firewalls Obsolete? The Debate
Are Firewalls Obsolete? The Debate Pro: Marcus J. Ranum! Con: Marcus J. Ranum 1! Firewalls are Dead Opening Position: Firewalls are a kludge - let s have real network security instead! New services and
USFSP Network Security Guidelines
USFSP Network Security Guidelines Table of Contents I. Access to Data II. Workstations and Personal Computers A. Computer Viruses B. Software C. Hardware D. Storage Media III. Local Area Networks (LANs)
MCSA Security + Certification Program
MCSA Security + Certification Program 12 credit hours 270 hours to complete certifications Tuition: $4500 Information technology positions are high-demand occupations that support virtually all industries.
Determine if the expectations/goals/strategies of the firewall have been identified and are sound.
Firewall Documentation Develop background information about the firewall(s) in place: Segment diagrams Software Hardware Routers Version levels Host names IP addresses Connections Specific policies for
Chapter 8 Monitoring and Logging
Chapter 8 Monitoring and Logging This chapter describes the SSL VPN Concentrator status information, logging, alerting and reporting features. It describes: SSL VPN Concentrator Status Active Users Event
CMPT 471 Networking II
CMPT 471 Networking II Firewalls Janice Regan, 2006-2013 1 Security When is a computer secure When the data and software on the computer are available on demand only to those people who should have access
Network Defense Tools
Network Defense Tools Prepared by Vanjara Ravikant Thakkarbhai Engineering College, Godhra-Tuwa +91-94291-77234 www.cebirds.in, www.facebook.com/cebirds ravikantvanjara@gmail.com What is Firewall? A firewall
CS 640 Introduction to Computer Networks. Network security (continued) Key Distribution a first step. Lecture24
Introduction to Computer Networks Lecture24 Network security (continued) Key distribution Secure Shell Overview Authentication Practical issues Firewalls Denial of Service Attacks Definition Examples Key
Open Source Security Tools
Open Source Security Tools Practical Applications for Security Tony Howlett Prentice Hall Professional Technical Reference PRENTICE Upper Saddle River, NJ 07458 www.phptr.com Preface xi Audience xii Contents
Hervey Allen. Network Startup Resource Center. PacNOG 6: Nadi, Fiji. Security Overview
Hervey Allen Network Startup Resource Center PacNOG 6: Nadi, Fiji Security Overview Security: A Massive Topic Security Viewpoints - Server - Client - Network Securing each overlaps the other Server Client
Project 2: Firewall Design (Phase I)
Project 2: Firewall Design (Phase I) CS 161 - Joseph/Tygar November 12, 2006 1 Edits If we need to make clarifications or corrections to this document after distributing it, we will post a new version