Archive for the ‘Security+’ category

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Detecting and Preventing Social Engineering and other Hacking Processes

August 31st, 2009

Social engineering attacks are growing fast, and today majority of attackers use social engineering techniques to infiltrate into a victim’s network. It is very difficult for a technician to identify social engineering attacks, as these attacks do not involve any technical tools or any software-coding program. A social engineering hacker attempts to persuade users to provide information that will enable him to use their computers or computer resources. Many technicians think that such attacks are a cause of concern only for large organizations. It used to be the case earlier, but now hackers target all sectors.

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Posted in A+, A+2006, MCSA, MCSA 2000, MCSA 2000 Security, MCSA 2003 Security, MCSE, MCSE 2000, MCSE 2000 Security, MCSE 2003 Security, Security+

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What is NTLM version 2?

August 28th, 2009

NTLM version 2 is an enhanced and most secure form of challenge/response authentication. NTLM version 2 uses 128-bit encryption. It significantly improves both the authentication and session security mechanisms. NTLM 2 has been available for Windows NT 4.0 since Service Pack 4 (SP4) was released, and it is supported natively in Windows 2000 and Windows 2003 operating systems. All client operating systems developed by Microsoft after Windows 2000 Professional support NTLM version 2. NTLM 2 support can be added to Windows 95 and Windows 98 by installing the Directory Services Client.

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Posted in MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003, MCSE, MCSE 2000, MCSE 2000 Security, MCSE 2003 Messaging, MCSE 2003 Security, MCSE-NT to 2003, Security+

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What is active detection?

August 19th, 2009

Active detection is a type of intruder detection in which a system takes automatic actions when it recognizes an attack. It can terminate unauthorized connections, processes, or sessions. Active detection can also launch a counterattack against an intruder.

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Posted in CIW Certified Security Analyst, CIW Professional, Master CIW Administrator, Security+

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What is encryption?

July 17th, 2009

Encryption is the process of conversion of data into a form that cannot be easily understood by unauthorized persons. The encrypted data is known as cipher text. The cipher text can be converted back into its original form by a process known as decryption. Decryption is the reverse process of encryption.

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Posted in Security+

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What is blowfish?

July 12th, 2009

Blowfish is a symmetric 64-bit block cipher that can support key lengths up to 448 bits. It is included in a large number of cipher suites and encryption products. It was designed in 1993 by Bruce Schneier and is freely available for anyone to use. This has contributed to its popularity in cryptographic software.

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Posted in CISSP Concentrations, Certified Information Systems Security Professional, MCSA, MCSA 2000, MCSA 2000 Security, MCSA 2003 Security, MCSE, MCSE 2000, MCSE 2000 Security, MCSE 2003 Security, Security+, Systems Security Certified Practitioner

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What is a vulnerability attack?

July 10th, 2009

A vulnerability attack takes advantage of the vulnerabilities in an operating system or software service by entering the operating system and disrupting its working. The best way to counter such attacks is to keep the operating system updated with latest service packs and updates.

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Posted in CCENT, CCNA, CIW Associate Design Specialist, CIW Professional, Master CIW Designer, Master CIW Web Site Manager, Security+

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What is ICMP?

July 8th, 2009

Internet Control Message Protocol (ICMP) is an integral part of IP. It is used to report an error in datagram processing. The Internet Protocol (IP) is used for host-to-host datagram service in a network. The network is configured with connecting devices called gateways. When an error occurs in datagram processing, gateways or destination hosts report the error to the source hosts through the ICMP protocol. The ICMP messages are sent in various situations, such as when a datagram cannot reach its destination, when the gateway cannot direct the host to send traffic on a shorter route, when the gateway does not have the buffering capacity, etc.

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Posted in CCENT, CCNA, MCITP, MCITP Consumer Support Technician, MCITP Enterprise Administrator, MCITP Enterprise Support Technician, MCITP Microsoft Windows Client, MCITP Microsoft Windows Server, MCP, MCSA, MCSA 2000, MCSA 2000 Messaging, MCSA 2000 Security, MCSA 2003 Messaging, MCSA 2003 Security, MCSE, MCSE 2000, MCSE 2000 Messaging, MCSE 2000 Security, MCSE 2003 Messaging, MCSE 2003 Security, MCSE-NT to 2003, MCTS, MCTS Windows Technology, MCTS Windows Vista, Network+, Security+

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What is NTLM version 2?

July 3rd, 2009

NTLM version 2 is an enhanced and most secure form of challenge/response authentication. NTLM version 2 uses 128-bit encryption. It significantly improves both the authentication and session security mechanisms. NTLM 2 has been available for Windows NT 4.0 since Service Pack 4 (SP4) was released, and it is supported natively in Windows 2000 and Windows 2003 operating systems. All client operating systems developed by Microsoft after Windows 2000 Professional support NTLM version 2. NTLM 2 support can be added to Windows 95 and Windows 98 by installing the Directory Services Client.

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Posted in MCDBA, MCP, MCSA 2000 to 2003, MCSA to MCSE-2003, MCSE, MCSE 2000, MCSE 2000 Security, MCSE 2003 Messaging, MCSE 2003 Security, MCSE-NT to 2003, Security+

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What is Kerberos v5?

June 26th, 2009

Kerberos v5 is an authentication method used by Windows operating systems to authenticate users and network services. Windows 2000/2003 and XP clients and servers use Kerberos v5 as the default authentication method. Kerberos has replaced the NT LAN Manager (NTLM) authentication method, which was less secure. Kerberos uses mutual authentication to verify both the identity of the user and network services. The Kerberos authentication process is transparent to the users.

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Posted in A+, A+ 2009, CCNA, CIW Certified Security Analyst, CIW Professional, MCDBA, MCP, MCPD, MCPD .NET 2.0 Enterprise developer, MCPD Enterprise Applications Developer, MCSA, MCSA 2000, MCSA 2000 Security, MCSA 2000 to 2003, MCSA 2003 Security, MCSA to MCSE-2003, MCSE, MCSE 2000, MCSE 2000 Security, MCSE 2003 Messaging, MCSE 2003 Security, MCSE-NT to 2003, MCTS, MCTS .NET 2.0, MCTS .NET Distributed, Master CIW Administrator, Security+

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What is active detection?

June 25th, 2009

Active detection is a type of intruder detection in which a system takes automatic actions when it recognizes an attack. It can terminate unauthorized connections, processes, or sessions. Active detection can also launch a counterattack against an intruder.

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Posted in CIW Certified Security Analyst, CIW Professional, Master CIW Administrator, Security+

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