October 23,2000

mu-RAS, the Dialin Samba Server
===============================

The new server ( setup/dialin), is based on "mugetty" and run via
/etc/inittab. I used "mugetty", because no success had been
obtained using mgetty, the standard de-facto in Linux. 

It set a PC as a modem gateway to the LAN, offering to the remote
user all the possibilities he would have as if he were directly connected
to the LAN: httpd, ftp, telnet, Samba shares, etc.

It is useful also for stand-alone home computers: you have only to call
your home from outside, using the PPP Windows dial-up utility, specifying
your home phone number. When connection is up, you can access remotely
your disks and programs, using the "Network Resources" folder in M$.

I tested the stuff, in the Windows side, creating a new PPP-dialup icon,
and accepting all defaults.

The new /etc/ppp/ip-up script is smart enough to restarts importants
services (like httpd and smbd), in the way they can reflects
immediately the new assigned IP address and network routing.


/usr/bin/supermount and Samba
==============================

It is intended to be used mainly by the Samba-Server, on secure
network. It scan all hardisks and CD-ROMs, checking and mounting.

Any hard-disk partition is classified based on the Operating-System,
kind of interface (IDE, SCSI) and partition's number.

Example: if /dev/hdb6 is a Linux partition, /dev/sda1 is a Windows 
partitions and /dev/hdc is a IDE-CDROM, they will be mounted in:

		/tmp/samba/IDE-disk/Linux/hdb6
		/tmp/samba/SCSI-disk/Windows/sda1
		/tmp/samba/IDE-cdrom/hdc

I added in the Samba Share's pool, a "dynamical" share called "disks".
If you browse the "disks" folder from Windows, you will find the
/tmp/samba  hierarchy.

"supermount" can mount either read-write, either read-only 

Syntax:

			# supermount check
			# sumpermount mount
			# supermount umount


To activate the feature together with Samba, you will use a
command like:

	# setup smbd SUPERMOUNT=y CHECK=n READ_ONLY=y

liloconfig
============

More LILO-specific options added. Currently, liloconfig add
automagically two entry: the Linux target and the DOS target


mugetty
===========
Rustic agetty/mgetty replacement, with auto-PPP support.
It is a shell script and handle connection over serial lines
or modems, using only this three commands: "stty", "chat" and "pppd"

Options are:
        -v                      verbose mode
        -a                      auto-answer (no RING-RING required)
        -x program              program to execute (def: /bin/login)
        -s speed                baud speed 19200,38400,57600,115200,...
        -ppp                    Auto-PPP mode; starts pppd using
                                the /etc/ppp/opt.<tty> file
        -ip [local]:remote      Auto-PPP mode: using internal sane
                                defaults, and these ip-addresses


Log file is /var/log/mugetty.log

It can be used either via /etc/inittab, either in interactive.

mugetty is able to probe the line: if a modem is found, it use the
"chat" program; otherwise, it use the raw serial line.

mugetty examples: auto-PPP
------------------------------------------

In muLinux:

Ex1:
	# mugetty -s 115200 -ip 192.168.100.1:192.168.100.2  ttyS1

Assing the ip 192.168.100.2 to caller, over ttyS1. Ring-ring
is required, there. Tested from office.

Ex 2:
	# mugetty -a -s 115200 -ip 192.168.100.1:192.168.100.2  ttyS1

The same, but with "-a" switch: no ring-ring is required, so it
can be used to connect windows to linux, using two modems.

In Windows, I start the PPP connection as usual, for Internet,
with random phone number, login and password.

mugetty examples: remote login via modem
------------------------------------------

In muLinux:

Ex 1:
	# mugetty -a -s 115200  ttyS1

In Windows, I start Hyperterminal, then:

	atz, atx3, atdt

and got the "login:" prompt in muLinux.

mugetty examples: remote login via serial 
------------------------------------------

Ex 2:
	# mugetty  -s 19200 ttyS0

In Windows, I used the tty.exe, specifying 19200 baud

	c:> tty.exe

This program, do not work at higher speed. When "login:" is
reached, do "stty -echo". This fix the "eecchhoo" problem.


mugetty examples: muLinux-to-muLinux
------------------------------------

Replace hyterminal with miterm, and follow previous instructions.
For auto_PPP examples, on the client you should use setup/ppp0.