Great Circle Associates Firewalls
(January 1998)
 

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Subject: Re: solaris 2.5.1 ftp server on inside of firewall -Reply
From: Jesse White <jwhyte @ mail . state . tn . us>
Date: Mon, 26 Jan 1998 08:29:48 -0600
To: rmurphy @ itm-inst . com, jwhyte @ mail . state . tn . us
Cc: firewalls @ GreatCircle . COM

> [Solaris ftpd] <---> [ Smartwall ] <---> [client program]

This is, indeed, the correct diagram...

> The ftp-gw doesn't use a fixed port for it's data connection back to the
> client. It uses a random high port. (There is a Gauntlet patch to allow >
> you to force this to a particular port number.)

OK, but shouldn't the reply from the server to the ftp-gw daemon on the
firewall still originate from port 20?  I don't care what happens on the
other side of the firewall, just what I have to worry about filtering and
proxying.

>	-Rick

Jesse Whyte
Security Analyst
State of Tennessee
OIR/Telecommunications


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