John, Do you have any references, books or web, that discuss .NET 2.0's ability to use app domains in that manner?
Jonathan On 2/21/06, John Sheppard <[EMAIL PROTECTED]> wrote: > Krishna, > Another approach you might want to look into is to run each grid app in > it's own appdomain and limit the abilities of that app domain. You can lock > it down to a specific directory if the executor service is dropping data > files to given directories for a grid app. You could lock out app domains > from using the System.Net namespaces there by limiting phone home abilities > and you can make the executor more resilent by allowing the offending app > domain to die upon an unhandled exception rather than bringing down the > executor. You could also take advantage of caching grid apps on the client > machine where you wouldn't have to push or sip that app if you already have > the dlls on your system. .NET 2.0 does a very good job of allowing you set > up Sandboxing environs using app domains. > > John > > > On 2/21/06, Krishna < [EMAIL PROTECTED]> wrote: > > > > Hi Jonathan, > > > > I guess a simple way to prevent "grid-viruses", would be to use the .NEt > > CAS (Code access security) > > feature. We will need to implement some code in Alchemi to run user code > > under reduced priveleges inside a sand-box kind of environment on > > an Executor. > > > > Cheers > > Krishna. > > > > Jonathan Mitchem wrote: > > > > >I've been thinking about security recently, and started questioning > > >the security of a distributed system such as Alchemi. > > > > > >Is there anything that actually "constrains" the grid environment on a > > >machine so that a user doesn't allow some sort of distributed malware > > >to damage their machine? > > > > > >For instance, an application that reads the files on the machine > > >hosting the Executor, searches for certain files or filetypes (like, > > >password and private key files), and then sends them to a specified > > >address. And maybe even proceeds to break their encryption. > > > > > >Or, an application that creates several threads so that every machine > > >has a copy of the required DLLs, which subsequently proceeds to remove > > >critical system files from every machine. > > > > > >Is there anything to prevent such sort of usage? And if not (since > > >I'm presuming there isn't), how would we go about preventing such > > >damage? > > > > > > > > >Jonathan > > > > > > > > >------------------------------------------------------- > > >This SF.net email is sponsored by: Splunk Inc. Do you grep through log > files > > >for problems? Stop! Download the new AJAX search engine that makes > > >searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! > > > >http://sel.as-us.falkag.net/sel?cmd=k&kid3432&bid#0486&dat1642 > > >_______________________________________________ > > >Alchemi-developers mailing list > > >[email protected] > > > > https://lists.sourceforge.net/lists/listinfo/alchemi-developers > > > > > > > > > > > > > > > > > ------------------------------------------------------- > > This SF.net email is sponsored by: Splunk Inc. Do you grep through log > files > > for problems? Stop! Download the new AJAX search engine that makes > > searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! > > > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 > > _______________________________________________ > > Alchemi-developers mailing list > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/alchemi-developers > > > > > > -- > Life should NOT be a journey to the grave with the intention of arriving > safely in an attractive and well preserved body, but rather to skid in > sideways, paddle in one hand, beer in the other, body thoroughly used up, > totally worn out and screaming "WOO HOO what a ride!" ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid3432&bid#0486&dat1642 _______________________________________________ Alchemi-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/alchemi-developers
