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Grex Helpers Item 122: Grex System Announcements - Fall 2003 [linked]
Entered by i on Wed Sep 24 10:51:39 UTC 2003:

This item is for system announcements (new computer equipment on Grex, 
system upgrades, Grex meetings, etc.).  Personal announcements should go 
back in item 2; Grex system *problems* belong in the next item (#4). 

68 responses total.



#1 of 68 by dah on Wed Sep 24 11:22:42 2003:

Right.


#2 of 68 by davel on Thu Sep 25 12:49:09 2003:

Didn't it say you belonged in the *next* item?


#3 of 68 by asddsa on Thu Sep 25 19:43:58 2003:

Your mom belongs in the next compartment.


#4 of 68 by remmers on Mon Oct 13 20:12:38 2003:

Nominations are now open for December's Grex Board of Directors
election.  See Item 25 in the Coop conference (item:coop,25) for
details and to make nominations.


#5 of 68 by asddsa on Thu Oct 16 22:36:20 2003:

Thanks remmers.


#6 of 68 by cmcgee on Wed Oct 22 12:50:59 2003:

When I use PuTTY to ssh to Grex, I do not see the "last login/failed
attempts", the "password will expire in X days" or the "you have new/unread/no
mail" announcements.  

Why don't those announcements show up?  Can I make ssh show them to me?


#7 of 68 by goose on Wed Oct 22 13:26:09 2003:

ditto


#8 of 68 by aruba on Wed Oct 22 13:55:11 2003:

Me too.  I assumed this was a difference between how ssh and telnet requests
get handled by Grex.  I too would like to know how to get those messages via
ssh.


#9 of 68 by remmers on Wed Oct 22 14:50:08 2003:

It's a long-standing problem with ssh.  There are two possible fixes
that I can think of:  (1) modify the ssh source code (not a pretty
prospect), or (2) a workaround:  Somebody writes a program to display the
missing information, and ssh users invoke that program from their .login
or .profile files.


#10 of 68 by other on Wed Oct 22 14:58:26 2003:

Can the default .login and .profile be modified to include something 
along the lines of:

if ssh then echo messages


#11 of 68 by remmers on Wed Oct 22 15:26:42 2003:

Possibly.  I imagine that the user's connection method is known to
the system by the time the user's startup files are processed.


#12 of 68 by cross on Wed Oct 22 16:13:46 2003:

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#13 of 68 by aruba on Wed Oct 22 16:54:36 2003:

And what are those environment variables?


#14 of 68 by cross on Wed Oct 22 17:24:02 2003:

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#15 of 68 by gull on Wed Oct 22 17:40:25 2003:

A bigger problem is that if your password expires, ssh will not let you
in.  You have to telnet in to set the password, which means the new
password gets sent in cleartext across the network.


#16 of 68 by tod on Wed Oct 22 17:52:21 2003:

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#17 of 68 by cross on Wed Oct 22 17:53:26 2003:

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#18 of 68 by tod on Wed Oct 22 18:03:04 2003:

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#19 of 68 by cross on Wed Oct 22 20:46:44 2003:

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#20 of 68 by jhudson on Wed Oct 22 21:15:55 2003:

After we get to the openBSD machine, why don't we scrap the
password expiration system altogether?


#21 of 68 by remmers on Wed Oct 22 22:14:47 2003:

Here on Grex, when connected via ssh, I have SSH_CLIENT and SSH_TTY
environment variables set.


#22 of 68 by cross on Wed Oct 22 22:49:11 2003:

This response has been erased.



#23 of 68 by malymi on Thu Oct 23 08:28:49 2003:

the problem with sshd is that it believes it knows how to process a
login.  the authors found that not all systems would even allow sshd to
do what it tries to do, so the arrogant fools were forced into providing
a method whereby the system login program can be invoked -- this via
`uselogin yes'.


#24 of 68 by gull on Thu Oct 23 13:30:57 2003:

Though you have to be careful.  A fair fraction of the security holes in
ssh were related to the use of "uselogin yes".


#25 of 68 by jp2 on Thu Oct 23 13:31:56 2003:

This response has been erased.



#26 of 68 by remmers on Thu Oct 23 13:35:04 2003:

As I'm not all that knowledgable about the fine points of ssh,
please explain what "uselogin yes" is.  Am I reading correctly
that it's a configuration option that, among other things, would
cause the same info to be displayed to the user on login that 
would be displayed with a telnet login?


#27 of 68 by jp2 on Thu Oct 23 15:35:51 2003:

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#28 of 68 by remmers on Thu Oct 23 17:29:13 2003:

But does this have the effect I asked about?


#29 of 68 by jp2 on Thu Oct 23 19:12:21 2003:

This response has been erased.



#30 of 68 by tpryan on Sat Oct 25 15:10:08 2003:

        I thought grex had more lines?  What is with the busy signals
on -3000?
        Where was the announcement here about the dial-in lines
being disconnected?
        Does any staff care anymore about the trunk hunt not working?
Again, an item 3 or 4 response would be nice if it is the process 
of being fixed.


#31 of 68 by keesan on Sat Oct 25 15:16:29 2003:

The dial-in cancellation was mentioned in the coop conference.  I have not
had any problems but I dial 5041.


#32 of 68 by aruba on Sat Oct 25 15:54:52 2003:

Sorry, TIm, you're right - I should have posted here.  We are now down to 4
dialin lines: 761-3000, 5041, 3411, and 3451.  Are you saying that the trunk
hunt isn't working at all, or just that all four lines were busy when you
tried to call?


#33 of 68 by gelinas on Sat Oct 25 16:41:47 2003:

BTW, we should figure out which modems are no longer connected and unplug
them.


#34 of 68 by aruba on Mon Oct 27 15:43:35 2003:

I called Ameritech this morning to get them to fix the hunting on our lines.
(I was afraid that if I called on the weekend, I'd get someone who would
make the problem worse.)  I spoke with a gentleman named Jim, who checked
and found that all our numbers *except* 761-3000 had been programmed to
hunt.  He sent a request down to the programming department to fix things,
and they should be better in a few hours.  Please post here or send me mail
if there continue to be problems.


#35 of 68 by tpryan on Mon Oct 27 17:23:42 2003:

        Thank you for attention in getting this fixed.
I just dialed into -3000, any easy way to find if I did hunt down?


#36 of 68 by tpryan on Mon Oct 27 17:24:35 2003:

        I am currently on ttytf, but that might tell us if we hunted down
from -3000


#37 of 68 by scott on Mon Oct 27 17:33:12 2003:

who | grep 216.93.104.37
will give a list of people currently dialed in, and from there you can guess
whether you successfully trunk-hunted.


#38 of 68 by aruba on Mon Oct 27 21:15:44 2003:

Or you can dial 761-3000 with one phone, and dial it again with another.


#39 of 68 by keesan on Tue Oct 28 15:58:06 2003:

All my items are almost new again - they start at response 6, for instance,
instead of 38.  I am typing in 38 to go to the end.  What might have caused
this?


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