Referee 1 *******************************************

E: Referee Comments (For Author and Editor)  ------------------------------
A very good paper with an introduction I wish I had put into my own submission; 
I essentially have no comments beyond the noting of a couple of typos:
Section 3: method the -> method by which the?
Section 4.4: inherit -> inherent
Section 7: inherit -> inherent


Referee 2 *******************************************

The Gateway Computational Web Portal 

Overview :

This paper is an overview of Gateway and the services it provides.
The paper describes overall design philosophy, software components,
and relevant issues. Finally, the paper discusses future direction
and technologies to watch.


Review :

As noted in the paper, Gateway has a significant history and has
uncovered many of the problems in actual implementation that are
not obvious during the design phase. Of particular significance
are local HPC policies and security concerns.

The paper does an excellent job of explaining the design decisions
and the components that comprise Gateway. The section on security
is excellent and hints at a move away from client installed
software.

As with most Java heavy systems, the casual reader will need to 
become familiar with much of the terminology and concepts. For
the intended audience however, I feel the level of complexity is
absolutely appropriate.



Referee 3 *******************************************

E: Referee Comments (For Author and Editor)  ------------------------------

        Technical content is good, reasonable clear discussion of
        Kerberos and CORBA issues and architecture.

        One unanswered question in my mind is why the Charon solution
        was kept when the SSL solution is so much cleaner.  If there was
        a problem with the SSL solution (either technical or adminsistrative)
        it should have been covered.

F: Presentation Changes

    There are a number of formatting problems with this paper, which
    exist in the PDF file, but may not exist in the source file. Problems
    include:
        insufficient space between line at top and text
        missing footnote markers for institutions in title section
        heading misplaced on page 10 near bottom (overlays text)
        screen images are at too low a resolution