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    Sign Me Up for Whitelisting

    By
    Jason Brooks
    -
    October 2, 2007
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      Symantec has been turning heads with its suggestion that whitelisting might be a better way forward for ensuring the security of PCs than the blacklisting approach currently used by anti-virus products—including those from Symantec.

      My colleagues Jim Rapoza and Larry Seltzer have recently weighed in on the idea: Jim doesnt like it and Larry is characteristically skeptical of it. I found it interesting that Jim cited potential discrimination against open-source software as a drawback to application whitelisting, since this is the model around which popular Linux distributions have been modeled for years.

      Linux distributions such as Ubuntu, Foresight or OpenSUSE consist both of core operating system components (alongside a handful of often-used applications), such as those that ship with Windows, and a library of other, optional applications that sit in networked repositories.

      If an application resides in the repositories of your Linux distributor, that piece of software has undergone some sort of vetting process. The vetting differs from distro to distro, and most Linuxes include packages with graduated levels of vetting. Ubuntu Linux, for instance, contains core packages, which enjoy a higher level of testing and support than do its “universe” or “multiverse” packages.

      To read about the opportunity Symantec sees for SAAS in the channel, click here.

      For most distributions, these packaged applications are signed with encryption keys from the distributor, which gives users the confidence that the packages are coming from a source theyve chosen to trust.

      The downside of this application whitelisting approach is that sometimes the applications or the application versions you want arent available in your distributions repositories. In these cases, you must package the applications yourself (and take on the vetting yourself, as well) or turn to others whove done the packaging work (and decide whether to trust those packagers).

      Is it a bummer not to be able to install any application you find floating out on the Internet? It depends on how highly you value the integrity of your systems. Its the classic battle of security versus convenience.

      One things for sure: If you think you can skip through the Internet, bending over to pluck and install any shiny app you see, youre going to get bitten.

      Is application whitelisting a total solution? I dont think such a thing is possible.

      However, I contend that traditional anti-virus products cannot, never could and never will clean up after app install promiscuity the way that people wish they would, so better app vetting and a true commitment to least privilege models is the only way forward.

      Application whitelisting works for Linux. If Symantec can bring it to Windows, I say more power to Symantec. What say you?

      Check out eWEEK.coms Security Center for the latest security news, reviews and analysis. And for insights on security coverage around the Web, take a look at eWEEKs Security Watch blog.

      Jason Brooks
      As Editor in Chief of eWEEK Labs, Jason Brooks manages the Labs team and is responsible for eWEEK's print edition. Brooks joined eWEEK in 1999, and has covered wireless networking, office productivity suites, mobile devices, Windows, virtualization, and desktops and notebooks. Jason's coverage is currently focused on Linux and Unix operating systems, open-source software and licensing, cloud computing and Software as a Service. Follow Jason on Twitter at jasonbrooks, or reach him by email at jbrooks@eweek.com.
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