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Date:	Mon, 10 Mar 2003 22:35:49 PST8
From:	Peter Skye <pskye@peterskye.com >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: LAN, TCPIP and Router Setup

Content Type: text/plain

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Harry Chris Motin wrote:
>
> The order of the 2 does not appear to make much difference
> on my machine. Right now I have them switched to:
> dhcpstrt -i lan0
> ...
> ifconfig lo 127.0.0.1
> my router still does not register this computer
>
> The trick in getting the DSL and JunkSpy both to work was
> not the order of "dhcpstrt" and "ifconfig". Instead, it
> was the use of DHCP, instead of a fixed IP device (so that
> router could issue and the computer could accept a dynamic
> address) and the removal of all routes in the TCPIP config
> notebook (so JunkSpy would work with DHCP activated).

Glad you have it working, Harry.

Junk Spy is sort of an "intermediate server". Your email program talks
to it instead of directly to the email (POP3) server, and Junk Spy takes
the request that it receives from your email program and then contacts
the email server and gets the messages. Since Junk Spy is on the same
machine as your email program, the default setup is to use 127.0.0.1
(the "loopback address") as the IP address for Junk Spy. Thus, your
email program asks 127.0.0.1 for email messages, and Junk Spy is using
127.0.0.1 so it gets that request; Junk Spy then asks your "real" email
server for the messages, checks them to see if they are spam/junk, and
sends them back to your email program over the 127.0.0.1 link. If
IFCONFIG hasn't set up the local loopback (or if DHCPSTRT has trashed
it), there isn't any 127.0.0.1 connection available so your email
program can't communicate with Junk Spy.

I wrote a Rexx program similar to Junk Spy for Rocky a couple of years
ago. It was intended to handle logins between his older email program
and his ISP's email server which used an authentication that the older
email program didn't know. The program worked as far as connecting, but
I never got around to getting an account with Rocky's ISP (Orange County
Online) and testing the authentication. It worked fine with my own ISP
(which just needs USER and PASS). I was somewhat surprised that I could
write TCP/IP stuff in Rexx.

- Peter

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