What’s System File Checker?

by Daniel Petri

What is the System File Checker (SFC) command on a Windows 2000/XP/2003 computer? The System File Checker tool gives an administrator the ability to scan all of the protected files to verify their versions. The System File Checker tool also checks and repopulates the %SystemRoot%\System32\Dllcache folder. If the Dllcache folder becomes damaged or unusable, you… Read More

ISA 2004 Training Labs

by Daniel Petri

ISA Server 2004 Training Labs A review of Train Signal’s ISA Server 2004 Training. See more details at Train Signal's website. I was reasonably familiar with Microsoft Proxy 2.0 and I had installed ISA 2000 once about 3 years ago, although due to it’s location it was only used as a Caching Server. So, what could be… Read More

Download ISA Server SP1

by Daniel Petri

Where can I download ISA Server 2000 Service Pack 1? Internet Security and Acceleration (ISA) Server 2000 fixes are distributed in service packs. Installing the latest service pack keeps your installation of ISA Server 2000 current. Service packs include updates and fixes that are conveniently bundled for easy downloading. Service packs are cumulative; each new… Read More

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    More about Public Key Infrastructure (PKI)

    by Daniel Petri

    This article is a non-direct continuation of the "What is a Public Key Infrastructure (PKI)?" found on the Petri IT Knowledgebase. Public-Key Cryptography and One-Way Functions As written in previous articles, Public-Key cryptography (as opposed to symmetric key cryptography) relies on one-way functions, which are functions that are easy to calculate but hard to invert… Read More

    What’s Windows File Protection?

    with 3 Comments by Daniel Petri

    What is the Windows File Protection (WFP) in Windows 2000/XP/2003? A major cause of incompatibility and crashes in W2K/XP is the fact that an application might overwrite dynamic link library (DLL) files with a similar name belonging to other applications. Often, these are DLL files that get placed in the %systemroot%\System32 folder during an application's… Read More

    New EFS Features in Windows XP

    by Daniel Petri

    What are the new EFS features in Windows XP? Microsoft Windows 2000 introduced the capability for data recovery with the implementation of Encrypting File System (EFS), and this capability has been enhanced in Windows XP. Microsoft Windows XP provides many enhancements in the area of data protection - especially Encrypting File System (EFS). Windows XP… Read More

     Encrypted files using Cygwin and OpenSSL

    with 1 Comment by Daniel Petri

    Using Cygwin, the free open-source terminal emulator, in coordination with OpenSSL, you can create cross-platform encrypted files. The files created using Cygwin can be exported using mobile media including thumb drives, CDs, external hard drives, etc. Cygwin and OpenSSL are bundled in the download of Cygwin. The following tutorial (although demonstrated using Windows Vista) can… Read More

    GFI MailSecurity

    by Daniel Petri

    GFI MailSecurity 9 Latest version for Exchange & SMTP mail servers includes advanced quarantine filters and rules London, UK, 2 August 2005 - GFI has today released a new version of GFI MailSecurity for Exchange/SMTP, its email content security solution. Version 9 provides administrators with far greater ease of use and highly reduced maintenance requirements… Read More

    Data Protection and Recovery in Windows XP

    by Daniel Petri

    What are the new EFS features in Windows XP? Featured Product: Passware Kit - Password recovery software pack for the world's most popular office application files including Excel, Word, Windows 2003/XP/2000, Access, Outlook, QuickBooks, Lotus Notes, etc. Download FREE version now! Microsoft Windows 2000 introduced the capability for data recovery with the implementation of Encrypting… Read More

    Disable EFS in Windows 2000

    by Daniel Petri

    How can I disable EFS on Computers Running Windows 2000? To disable EFS on computers running Windows 2000, you must remove the default data recovery agent from the computer. This restriction is removed in Windows XP and Windows Server 2003 to help prevent security attacks on computers that are not members of a domain. The… Read More