This article by Kerry Thompson CCNA, CISSP helps provide some helpful information for people studying for their Cisco Certified Network Associate (CCNA) certification.
This paper by M.E. Kabay, PhD, CISSP a man with years and years of experience, is a great resource for finding educational information to further your studies in the demanding field of information security.
With the growing visibility of information security in today’s hacker-beset e-commerce world, many people are becoming interested in careers as information security specialists. All indications are that there aren’t enough people with security knowledge and skills to fill all the open positions; as a result, salaries have been rising steadily in the industry. This article looks at some frequently-asked questions and provides pointers for knowledge-hungry readers. Readers should note that these questions are not necessarily quoted from specific people – some are amalgams of queries from different people.
Please open the link below, if you are interested in a career in Information Security, and want to find resources to further your learning.
Logs and their management are however one of the most important aspects in computer systems management. This white paper shows where GFI EventsManager fits in this picture and how it is an invaluable asset in the corporate toolbox.
Get the latest career opportunities on offer from the Dell EMEA Enterprise Expert Center (EEC) on the new Dell Careers Forum exclusively on WindowSecurity.com. Dell have challenging growth plans for the center and are now seeking ambitious candidates to join them and develop their careers accordingly. More information on how to join Dell within!
Although security professionals tend to be more careful about personal information and the protection of computers, it is common to share that information with others. How well will they protect it?
The first part of this article series looked at how an IDS could possibly detect certain security tools. Covered was a packet sniffer and network scanner. This article continues with the analysis.
This white paper examines the nature of the threat that portable storage devices present and the counter-measures that organizations can adopt to eliminate them.
Firms found in violation of SOX, GLBA, and SEC rules can face stiff fines and potential jail time. The evolution of these government regulations was designed to create a new atmosphere of company accountability and instill a new sense of trust to investors.
WindowSecurity.com recently received a stylish makeover with a totally fresh site design. To celebrate we are offering free WindowSecurity.com t-shirts to our visitors! Read on to find out how you can win.
This white paper explores how the uncontrolled use of portable storage devices such as iPods and USB sticks coupled with data theft techniques such as 'pod slurping', can lead to major security breaches.
This article looks at the core of Rijndael – the round transformation – which will be broken down into its four steps: SubBytes, ShiftRows, MixColumns, and AddRoundKey.
This paper outlines a Distributed Denial of Service (DDoS) attack which abuses open recursive Domain Name System (DNS) name servers using spoofed UDP packets.
In this article I will go into the details you need to know on how to implement delegation of administration, as well as some design ideas to get you started.
This paper focuses on how identity and access management solutions can secure digital identities and information in compliance with regulatory guidelines across an extended enterprise.
In previous articles we covered the SPIKE HTTP proxy, and how to use it. Well there are many different HTTP proxies out there, and the BURP HTTP proxy is one of the better ones. Choosing an HTTP proxy to use is often a matter of preference.
We should always think twice before running an unknown program downloaded from the Internet. Of course not every application is dangerous, but it's all too easy to find a malicious program which will exploit our naivety - and that could cost us dearly. Let's see how we can analyse the behaviour of an unknown program before we run it.
Active Directory is one of the best and one of the most frustrating components Microsoft has ever given us. Luckily, there are third party tools that can make Active Directory administration easier. We installed the evaluation version of ScriptLogic’s Active Administrator, which is billed as an enterprise-level AD management and auditing solution. Here are our impressions of the product.
Although not very recent, this is an informative paper that proposes a very effective method of enhancing the abilities of mail systems to limit the amount of spam that they receive and deliver to their users. Greylisting is being implemented more frequently these days.
I have mentioned before that every network has its own quirks and design needs. Due to that, one can only offer generic advice on a network’s security posture. Let’s take a look at a typical network and comment on it.
There are many ways an attacker can take control over Cisco network devices, often due to an administrator's lack of knowledge, or negligence. A security vulnerability exploitation that leads to an unauthorized access, or a Denial of Service attack, are just a matter of time.
We saw in the first article of this two part series that scripting definitely has a place in the life of the computer security professional. In this second part I shall show how you would modify the earlier script, and cover some command line power tools.
It doesn't matter how hard you work or how much you spend on IT Security systems, if you are not ever-vigilant of "the human factor" your systems will still be vulnerable to attack!
Although not very recent, this is an informative paper that proposes a very effective method of enhancing the abilities of mail systems to limit the amount of spam that they receive and deliver to their users.
An attacker uses many methods to mount a successful attack. How you name your outword facing hosts, and your URL names can make life easier for the attacker.
A current and increasing trend in business is to engage in relationships with external entities in order to achieve strategic goals or obtain synergistic benefits. Two of the more dominant expressions in modern business literature relating to this intermingling of enterprises are outsourcing and strategic alliance.
What is the most common way your network will be compromised? It most probably will not be through any complex hacking technique but through overlooking the "small things".
IT professionals who must ensure regulatory compliance for the IT systems of the organizations in which they work can be in a difficult position. To help address these needs, Microsoft has created the Regulatory Compliance Planning Guide. The guide is designed to help IT professionals and others interested in regulatory compliance in a number of ways.
The updated Securing Windows 2000 Server solution includes information about risk assessment and analysis, securing specific critical Windows 2000 Server roles, and operating a secure environment after the initial lockdown phases have completed.
To date auditors have not looked too deeply into the content or accuracy of spreadsheets in corporations. With Sarbanes-Oxley (SOX), and the recent Health Insurance Portability & Accountability Act (HIPAA), you can bet that they will start to take a closer look. Will your spreadsheet results pass an audit?
Cryptovirology - cryptography's evil younger sibling. Let's look at how the intensity of this dark science feeds directly from the security of its older, defensive brother.
In most corporate organizations today there is a large array of computer network security devices deployed. All of these security tools produce voluminous amounts of output. What good is that output unless you can make use of it?
This paper by Darren Miller reviews a new video describing the "Anatomy of a Hack" and methods to thwart the hack. Some might consider this video controversial or "self serving" marketing information.
One of the first steps in meeting the challenges associated with the evolving demands for new network access methods, is the segmentation of the network. Once your network is segmented, the next step is to ensure that all endpoint devices (workstations, laptops, handheld devices, etc.) conform to your security baselines. Using a generic view of network access controls, we step through three common network connectivity scenarios in this paper.
This paper provides great insight into properly securing Wireless LAN's. It's amazing the number of WiFi installations that are open to neighbors and others! Is your network as secure as it can be?
This article lists 10 things that are of key importance in maintaining a healthy computer. To many of us these steps seem so common place, but it makes for good reading you can hand to that friend or family member just getting started with computers.
Blacklisting, Whitelisting, Greylisting? This article helps define Greylisting, and takes a deeper look at the Pros and Cons of this technique of SPAM abatement.
Kerberos is the protocol of choice for mixed network environments. This article explains how to use Kerberos authentication in these mixed environments.
In almost every corporate computer network today there are proxies to be found. This is pretty much a standard computer security practice. The confusion starts when people start talking about all the various proxy types. Within the confines of this article all of the various proxy types will be discussed.
You can have everything in your Security Arsenal perfect. Your team is ready, but is everyone else prepared? This article will help insure you have everyone aware and helping you maintain the security you have worked hard to achieve.
Authenticating users who log onto your network by account name and password only is the simplest and cheapest (and thus still the most popular) means of authentication. However, companies are recognizing the weaknesses of this method. Passwords can be guessed or cracked using dictionary attacks or more sophisticated methods such as rainbow tables, or users can be coerced, charmed or tricked into revealing their passwords to others. These latter techniques, called social engineering, have become a growing problem for companies of all sizes.
Over the course of part two in this article series we covered both netcat and ettercap. What we shall now cover in the final part of this series is a packet crafter and an HTTP proxy. Read on to find out more about these very powerful tools of the trade.
Cracking Passwords is an important part of a network security assessment. Many methods and tools are available to crack passwords. This article provides some thought provoking insight into methods to perform a password audit.
Rainbow tables reduce the difficulty in brute force cracking a single password by creating a large pre-generated data set of hashes from nearly every possible password. Rainbow Tables are popular with a particularly weak password algorithm known as Microsoft LM hash. LM stands for LAN Manager, this password algorithm was used in earlier days of Windows and still lives on only for compatibility reasons.
In part one of the article series on “Tools of the Trade” we covered a packet sniffer and network scanner. Both installation and sample usage were shown. In part two we will go on to cover other key tools that are of importance to learn. Read on to find out more!
File level backup is another way of taking backups for the files and folders residing on a storage volume, keying on backups for mission critical data which results in having more than one layer of data protection at a lower price tag.
Within Windows you might want to track who is performing specific tasks. This might be to meet a regulatory compliance, or to just track when users perform tasks on desktops and servers. The benefits of deploying auditing settings to all computers include better control of the environment, audit trails for security reasons, and tracking of events for forensics. The big question boils down to how should these settings be deployed correctly, efficiently, and with assurance that the settings will be persistent? The answer is simple and efficient: Group Policy. Here, we will look at the settings that need to be deployed, the methods to deploy them, and options to verify that the settings are still in place.
By familiarizing yourself with following software, you will not only have a better understanding of the vulnerabilities inherent in 802.11 networks, but you will also get a glimpse at how a hacker might exploit them.
Being in the computer security field means that you are always striving to stay current. You are always trying to learn new tools, and understand new exploits. That said there are also some tools that simply aren’t going to go away any time soon and are really necessary to learn. Over the course of this three part series we will look at some of the best known hacking tools. After all, it pays dividends to know just how your enemy works and more specifically with what.
This is Part 2 of an article to help improve the understanding of the impact and problems created by Spam. This section focuses primarily on things that can be done to help reduce the impact of Spam for consumers, ISP's, and corporations. There is no 100% with Spam reduction, but things can be done to improve the current status and condition of Internet email reliability.
This article is a follow up to my previous article on WindowsNetworking.com titled "Running Windows Under Non-Admin Accounts" and shares some comments from readers concerning issues they've found and solutions they've tried for limiting desktop computer users to non-admin accounts. The article also provides some additional workarounds for performing admin-level tasks while logged on to a computer using ordinary user credentials.
Online consumers demand personalized unique identities that make them confident about online transactions. This whitepaper outlines issues with managing online identities when faced with increasing threats against these online identities.
Having an interest in computer security means one thing for certain: That you will have to keep your skills up to par and continually explore new ones. How should you go about fulfilling this ambitious plan? Read on to find out how.
There is a spate of papers and tools on using Modeling and Simulation (M&S) for testing Denial of Service - (DoS), virus and worm (Propagation, attacks) against computer networks, but this is not the whole story, there are no explicit M&S tools for testing computer/network security and network attack modeling. In other words, it seems that Computer Simulation was studied and investigated in many areas but the field of Computer Security has not produced significant research results in this area to date!
Simplicity is a pillar of good cryptography. In this article, we'll cover several "acts" of simplicity, ranging from independence in modularity, reduction of complexity, and conservative threat modeling, along with a final spiel on the importance of using message authentication.
In response to the growing torrent of unsolicited bulk email, many technical schemes have been proposed and implemented to distinguish spam from legitimate mail and to block delivery of spam while letting legitimate mail through. Although none of the schemes is the "magic bullet" some of them, particularly when used in combination with each other, can help limit the amount of spam that users receive.
In Part 1 of this article series we went over some of the physical threats confronting networks. We will continue, in Part 2, to cover various other ways to help secure the workstation, and thereby further help harden the internal network from attack.
Both the Active Directory and Windows in general offer a huge degree of flexibility. Although it’s really nice to have a security model that can be custom tailored to meet your exact security needs, there is a definite downside to the way that Windows security works; it can be really complicated. Fortunately, there is a way to tell exactly what the outcome of all of those policy elements is. You can run a Resultant Set of Policy (RSOP) query. In this article, I will show you how.
SPAM is one of the biggest challenges facing Internet consumers, corporations, and service providers today. Part 1 of this article explores the Issues and Impact of Spam. Part 2 provides some insight into methods for reducing Spam.
Using the familiar Alice and Bob model, we'll take a look at the concept of integrity preservation, through the use of a MAC, or Message Authentication Code. This article will define what it is, what it does, and why it's vital in the majority of cases, although often overlooked in most of them.
In an effort to stem the fast-growing tide of web application security breaches, Acunetix today announced that it is offering free website security audits to 5,000 enterprise organizations.
This document discusses the issues and concerns that organizations may face when they apply the LUA approach to computers that run Microsoft Windows XP. This paper also describes the high-level issues that affect implementation of the LUA approach and provides useful links to other online resources that explain these concepts in more detail.
Malware has truly evolved during the last couple of years. Its potential for financial and network based abuse was quickly realized, and thus, tactics changed, consolidation between different parties occurred, and the malware scene became overly monetized, with its services available on demand.
Going back over the basics is always a good idea. One of the most fundamental pieces of knowledge in regards to computer communications are the four core protocols; IP, TCP, UDP, and ICMP. What we shall do over the course of this article is cover the options for both TCP and IP to see what, if any, security implications they may have.
The updated Windows Server 2003 Security Guide provides specific recommendations about how to harden computers that run Microsoft Windows Server 2003 with Service Pack 1 (SP1) in three distinct enterprise environments. 1. Where older operating systems such as Windows NT 4.0 and Windows 98 must be supported. 2. Where Windows 2000 is the earliest version of the Windows operating system in use. 3. Where concern about security is so great that significant loss of client functionality and manageability is considered an acceptable tradeoff to achieve maximum security.
Many administrators tend to ignore the recommendation that WSUS be configured to use SSL encryption if the WSUS server is only servicing clients within the perimeter network. However, if SSL encryption is not used, a hacker could potentially steal the WSUS server’s identity and use the spoofed server to send malicious versions of patches to your clients. If you don’t like the idea of having a bunch of infected clients on your network, then check out this article on how to encrypt WSUS transactions.
All too often we hear of how a hacker bypassed a router and the firewall to penetrate a company’s internal network. Reality is that there will always be a way into an internal network. Is it time to start thinking of protecting the network in a different way? Read on to find out.
User2sid and Sid2user are two small utilities for Windows NT, created by Evgenii Rudny, that allow the administrator to query the SAM to find out a SID value for a given account name and vice versa. User2sid.exe can retrieve a SID from the SAM (Security Accounts Manager) from the local or a remote machine and Sid2user.exe can then be used to retrieve the names of all the user accounts and more. These utilities do not exploit a bug but call the functions; LookupAccountName and LookupAccountSid respectively. These tools can be called against a remote machine without providing logon credentials except those needed for a null session connection. These tools rely on the ability to create a null session in order to work.
Windows domains rely on policy-based security mechanisms, but Windows security policy deployment can be confusing to the uninitiated. What's the difference between the local security policy, domain security policy and domain controller security policies? When and how do you use each? How do you use site GPOs and OU GPOs for best security, and how do they all interact together? What security policy tools are included with the operating system and how is each used? This article will provide an overview of the roles of Server 2003 security policies and how to use them to secure your systems and network.
With the advent of faster computer networks and a far more stable infrastructure has come the need for a quicker way to “switch” this information around. Two of the best known methods for doing so are ATM and Frame Relay. Within the confines of this article we will discuss just what they are and where they fit in.
The updated Threats and Countermeasures guide provides you with a reference to all security settings that provide countermeasures for specific threats against current versions of the Microsoft Windows operating systems.
With security becoming such a huge priority for companies over the last few years, many administrators who might have never thought twice about digital certificates are suddenly finding themselves in situations that require issuing various types of certificates. In this article, I will explain some of the benefits and some of the drawbacks of internal and external certificate authorities, in an effort to help you to make an intelligent decision as to what is right for your network.
The computer security world has come a long way over the past decade or so. There are all kinds of programs to mitigate external threats and the ever present spectre of viruses. What about those programs that are initiated from the trusted internal network though? Read on to learn more about the threat of HTTP tunnels.
Microsoft’s Encrypting File System (EFS), used to encrypt data on Windows 2000, XP and Server 2003 computers, relies on a public key certificate. If you don’t have a public key infrastructure, EFS can use a self-signed certificate. This is the default for using EFS on a standalone or workgroup computer. Implementing EFS within a domain with a PKI presents more complexity. In this article, we'll look at how to manage and use EFS in a Windows 2000 or Server 2003 domain.
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