Ref: 99980155
Title: Technical Services Bulletin, June 1985
Date: 6/1/85

Copyright 3Com Corporation, 1991.  All rights reserved.

.h1;ETHERSERIES/DOS 3.1 COMPATIBILITY

EtherSeries Release 2.4 and DOS 3.1 are compatible. Testing was
completed on a standard IBM XT and IBM AT, each with 512 KB.

.h1;CHANGING PASSWORDS ON A 3SERVER

For security, passwords are encrypted and cannot be decrypted. If
a password is forgotten or lost, you can use 3DEBUG to remove the
old password from the USERS file; then create a new password
using the EtherSeries "ES MOD" command.

To remove a password:

1.  Turn the thumbwheel on the 3Server to setting 4 and reboot
the 3Server.  On this setting, the 3Server will display the
server's Ethernet address and wait for boot service from a user
PC.

2.  At a user node with the System Software diskette in drive
A:, type:

      A>ECONSOLE/START

3.  Upon receipt of the correct Ethernet address, type 'Y' to
boot the 3Server over the network. Once the message "REMOTE
ACTIVE" appears on the 3Server LCD, type a carriage return and
wait for the prompt, "A>>".

4.  Upon getting the "A>>" prompt, switch to "C>>" and the
subdirectory "ETHERSHR" by typing:

      A>>C:
      C>>CD ETHERSHR

5.  Next, save a copy of the original file in case of errors:

      C>>COPY USERS USERS.OLD

6.  Next, edit the USERS file by typing:

      C>>3DEBUG USERS

On the "-" prompt, type "D" to dump a block of the file:

       -D<RETURN>

You will see data that looks like this:

[To read the table, the positions are:]
POSITIONS  0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F
12DF:0100  5A 5A 4D 41 47 49 43 00-00 00 00 60 8C 05 71 20   ZZMAGIC.... ..q
12DF:0110  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00   ...............
12DF:0120  00 00 00 00 00 00 00 00-23 43 52 4F 53 53 00 00   ........#CROSS.
12DF:0130  00 00 00 60 8C 05 71 20-00 00 00 00 00 00 00 00   ...   q .......
12DF:0140  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00   ...............
12DF:0150  5A 5A 33 44 45 00 00 00-00 00 00 60 8C 05 71 20   ZZ3DE..... ..q
12DF:0160  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00   ...............
12DF:0170  00 00 00 00 00 00 00 00-00 4D 41 47 49 44 41 00   ...............
12DF:0180  00 00 00 60 8C 05 71 20-00 00 00 00 00 00 00 00   ...  ..q ......
12DF:0190  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00   ...............
12DF:01A0  5A 5A 4D 41 47 49 43 00-00 00 00 60 8C 05 71 20   ZZMAGIC.... ..q
12DF:01B0  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00   ...............
12DF:01C0  00 00 00 00 00 00 00 00-4C 55 54 54 45 52 00 00   .......LUTTER..
12DF:01D0  00 00 00 41 57 40 6D 60-67 45 00 00 00 00 00 00   ...AW@M`gE.....
12DF:01E0  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00   ...............
12DF:01F0  4F 50 4E 53 59 53 00 00-00 00 00 60 8C 05 71 20   OPNSYS..... ..q

Locations are as follows using 0100 as an example:

LOCATION NUMBER   0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
DATA AT LOCATION 5A 5A 4D 41 47 49 43 00 00 00 00 60 8C 05 71 20

The numbers on the left indicate positions in the file, the
numbers under the position indicators are the hex data; the
characters on the right are the ASCII representations of the
data. To locate a password, find the first character of the name
in the ASCII table; find the matching hex byte; call that "O"
and count to the 11th position. This is the first character of
the encrypted password and must be set to zero to clear the
password.

Example

For the user LUTTER above, the user name starts at location
12DF:01c8.  Counting 11, we get to 12DF:O1D3 (data byte:41).
The encryped password reads AW@M'gE.  To clear it, type

     -E 0 1 D3 41,00 < RETURN > [to enter the new data byte]
     -W [to write out the changed filel
     -Q [to quit back to DOS]

If you make a mistake, exit with "Q" (this keeps the file from
being written out).

     - Q

and re-edit the file by retyping:

     C>>3DEBUG USERS

ONLY IF you make a mistake and the file has already been written out, copy
the old version, " USERS.OLD" back to "USERS" by typing:

       C > > COPY USERS.OLD USERS

and re - edit using 3DEBUG above.

7.  Reset the thumbwheel switch setting to 0 and reboot the 3Server.
It will come up serving and the user whose entry was changed
in the USERS file will no longer have a password.


.h1;3SERVER LOCAL CONSOLE CONFIGURATION

The locale console of a 3Server must be configured as specified
below:

   9600 baud
   EVEN Parity
   7 data bits and 1 stop bit

Pins 2, 3, 7 should be used; and pins 2 and 3 are crossed. For a
more detailed explanation see the 3Server Administrator's Guide,
Introductory Section, Appendix B, page B - 7.

The terminal should not be using any modem functions and should
be configured only for pins 2, 3, 7. The manual outlines other
signals which are available, but if someone is having a problem,
it is best to begin with this minimum configuration.

If the configuration is not correct, the following symptoms may
appear:

POOR SCREEN FORMAT:
 Characters will appear on the screen but all over the place, not
 nice and neat the way we like it.

INABILITY TO RECOGNIZE ALL KEYBOARD CHARACTERS:
 A 3 might be recognized but a 1 or 2 will not, and the user
 cannot make those selections on the admin menus.

NO APPARENT CONNECTION AT ALL:
 No response from the 3Server when LCONSOLE is typed

.h1;3SERVER HELPFUL HINTS

Only copies of the System Software Diskette using "DISKCOPY" will
work properly when using "ECONSOLE/START" as the booting
process requires the bootstrap.  The bootstrap will not get
copied using "COPY *.*".

ECONSOLE works only from a user PC, and not from a server.

You CANNOT use the same tape for full and incremental backups.
Only empty tapes can be used for full backups.

You CANNOT back up a volume at a time; you CAN restore a volume
at a time.
