Great Circle Associates Firewalls
(November 1996)
 

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Subject: Re[2]: File transfer throught a firewall
From: "Daniel Salenger" <dsalenger @ dttus . com>
Date: Thu, 14 Nov 96 18:39:13 CST
To: mark @ internetstartup . com
Cc: Firewalls @ GreatCircle . COM

     my mail system says that mark @
 internetstartup .
 com said:
     
     >I believe that Java RMI will be overloading RMI on port 80.  How does 
     >that make all of the firewall owners feel?  "Tunneling" is probably 
     >the right word to use.
     >So file uploads (See Also RFC 1867 "Form-based File Upload") aren't 
     >our only worries.
     >
     >How is the firewall supposed to control what is really being sent 
     >over http?
     >This disempowerment of the firewall is most troubling.
     >
     >Mark Riggins
     >
     
     
     (original problem solved but......)  Mark I would tend to agree with 
     you here.  From what I have seen at a design level (not the code 
     level) of both Eagle and Sidewinder I am impressed with the detailed 
     look at the SMTP packets (search for buffer overflow?) over other 
     proxies however, I think that screening http traffic may be like 
     attempting to make the perfect 'hardened' UNIX kernel all over again.  
     Would you ever be satisfied that all of the 'evil' in the world was 
     removed?
     
     Dan Salenger
     Deloitte & Touche LLP
     




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From: Carlos Francisco Tondreau Canas <ctondrea @ puc . cl>
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