Great Circle Associates Firewalls
(May 1994)
 

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Subject: Re: Screend ports (other than ULTRIX and BSD/386)?
From: Brent Chapman <brent @ mycroft . GreatCircle . COM>
Date: Sat, 07 May 1994 13:16:03 -0700
To: Geoff Mulligan <mulligan @ future . Eng . Sun . COM>
Cc: Stephen . L . Arnold @ Arnold . Com, Firewalls @ GreatCircle . COM
In-reply-to: Your message of Tue, 03 May 94 08:34:10 PDT

Geoff Mulligan <mulligan @
 future .
 Eng .
 Sun .
 COM> writes:

# Is there a reason that you must run screend and not an alternative that
# provides equal functionality without the overhead of screend's context
# switches from kernel to user space.

Such as?

And what difference does it make anyway, since screend on a 486 is
fast enough to keep up with a T1 line?  I mean, yeah, there's the
architectural purity point of "oh, yuck, you mean it has to dip down
into user space for every packet?", but as long as it's fast _enough_,
who cares?


-Brent
--
Brent Chapman         | Great Circle Associates  | Call or email for info about
Brent @
 GreatCircle .
 COM | 1057 West Dana Street    | upcoming Internet Security 
+1 415 962 0841       | Mountain View, CA  94041 | Firewalls Tutorial dates


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