Umask

[Jay Paulson <jpaulson@xxxxxxxx>]

Fedora's default umask is set to 022.  I need it to be set to 002 so 
that different users within the same group can ftp and download the 
same file(s).  However, I noticed that when I set the umask to 002 it 
changes it system wide!  I was wondering if this was a security risk?  
My network admin wants us to ssh in change the owner of the file using 
the sudo chown command, download the file, then change the owner back.  
I REALLY don't want to do this for every file that I want to work on.  
There has to be a way to change this and I think umask is the way to do 
it.  The thing is I do not want to go changing the umask of the system 
without knowing if it's secure or not.

Thanks for any help.
jay