[426] in Resnet-Forum
SLIP/PPP Summary (Part 2 of 2)
daemon@ATHENA.MIT.EDU (Steve Morytko)
Tue Dec 13 01:50:22 1994
Date: Tue, 13 Dec 94 01:33:41 EST
From: Steve Morytko <STEVE@UConnVM.UConn.Edu>
To: resnet-forum@MIT.EDU
------------------------------------------------------------------------
Continuation of SLIP/PPP summary. Below is second half.
------------------------------------------------------------------------
========================================================================
Organization: Haverford College
>
> 1) Current status: __X_ Offer it ____ Plan to ____ On hold
> 2) Who's connected: __X_ Faculty __X_ Staff __X_ Students ___ Others
> 3) Number of ports: _14__ Today _14_ Spr 95 _14_ Fall 95
> 4) Whose access server? Telebit NetBlazer Modems? Worldblazer
> 5) What authentication server? Accounts on Netblazer
> 6) Comments:
Currently our largest group of users is students. We're not planning to
expand, because we expect student usage to drop to near zero in Fall 95
when all of our dorms will be networked.
========================================================================
Organization: Harding University
1) Current status: ____ Offer it ____ Plan to _XX_ On hold
2) Who's connected: ____ Faculty ____ Staff ____ Students ___ Others
3) Number of ports: ____ Today ____ Spr 95 ____ Fall 95
4) Whose access server? Modems?
5) What authentication server?
6) Comments: We're in the midst of installing security firewalls & such like
for our present access methods. Do not want to muddy the water with yet
another possible security problem just yet. That's why our SLIPP/PPP access is
on hold.
========================================================================
Organization: Ohio State University
We have slip access for everyone at OSU. We provide a free software package
called HomeNet which includes all basic Internet services (telnet, ftp, email,
etc.) Everyone is authenticated by the dial-in terminal servers with a
password. That password gives them access to the campus network. Then they
also need to log into whatever computers they use after that. We do no
useage accounting for the dial-in slip servers, and see no need to do so.
But we do kep a log of all the connections, so we can trace back and find
the occasional troublemaker. We probably have about 250 ports now, plus
another 200 or so for asynch dialin. The terminal servers are Cisco,
and Kerberos is used for authentication.
========================================================================
Organization: University of Vermont
>
> 1) Current status: ____ Offer it _x_ Plan to ____ On hold
> 2) Who's connected: __0__ Faculty ___0_ Staff ___0_ Students __0_ Others
> 3) Number of ports: __0__ Today __2?__ Spr 95 _10?__ Fall 95
> 4) Whose access server? Xyplex (?) Modems? Telebit
> 5) What authentication server? Xyplex -
> 6) Comments: We have been interested in offering SLIP or PPP for some time
>and still have plans. However, we are having some difficulty keeping up with
>ordinary dial-up demand and have been reluctant to do anything that would
>increase that demand. We plan to put in a couple of connections for staff use
>next semester and see how it goes from their. I would be interested in other
>schools' experiences with the affect on session times and modem-pool
>contention in general...
=======================================================================
Organization: Illinois State University (2 replies)
1) Current status: ____ Offer it ____ Plan to _X__ On hold
2) Who's connected: ____ Faculty ____ Staff ____ Students ___ Others
3) Number of ports: ____ Today ____ Spr 95 ____ Fall 95
4) Whose access server? Morningstar Modems? US Robotics
5) What authentication server? None
6) Comments: We've run into some technical problems, we have a digital phone
system and have to work through some problems unique to our systems.
When complete, we intend to offer 48 lines initially with 96 after the bugs are
worked out.
Phase I will allow for terminal emulation only (December 1994)
Phase II will allow SLIP (Spring 1995)
>
> 1) Current status: ____ Offer it _XX_ Plan to ____ On hold
> 2) Who's connected: _XX_ Faculty _XX_ Staff _XX_ Students ___ Others
> 3) Number of ports: _0__ Today _48_ Spr 95 _96_ Fall 95
> 4) Whose access server? Morningstar Modems? US Robotics Total Control
> 5) What authentication server? Special (see below)
> 6) Comments:
> We plan to make use of an IBM rs6000 to run, not only SLIP/PPP but
also, our standard dialup services. The system will have a menu of hosts to
connect to including a PPP option. Selecting PPP will log them in to the
server using an account set up on that system that fires up the SLIP/PPP
connection taylored to that user. The USR Total Control rack mounted modems
will feed into a Central Data SCSI terminal server attached to the rs6k.
========================================================================
Organization: Duke University
Hi!
Sorry I haven't responded quicker, but we have been super-busy.
Duke has 128 (soon to be v.34/28.8) 19.2 v.terbo Telebit
modems connected to Xylogics Annex terminal server MIMS. (MIMs are
Cabletron boards that fit in Cabletron MMACs.)
We support 300-19.2kb, SLIP, PPP, ARA, TN3270 and terminal access
via the same number. One size fits all! It has been very challenging
to set it up this way but we are very proud of what we have done...I
feel that we have the BEST, bar NONE, asynch access in the country.
(pats self on back!)
I've written what I consider to be a bullet-proof login.cmd script for
Peter Tattam's Trumpet Winsock 2.0b (which I site-licensed) and as of
the current release have had no problems. I went through hell for a
a few weeks while fine-tuning the script!
We package all files up in an archive called dukeslip.zip and make it
publically available on ftp.netcom.duke.edu in the directory
/pub/dukenet/SLIP-PPP. There is a SLIP.FAQ in the directory as well,
feel free to download both files and take a look...I only ask that you
not use our licensed copy of Trumpet.
I maintain real-time stats using perl, gnuplot and www. Take a look
at url http://www.netcom.duke.edu under the DukeNet/Statistics section
and take a look. We average about 6,000 calls per day through our lines.
Macs are supported but we haven't had time to wrap up all the MacPPP stuff
and bundle it up in a nice archive like we have with Windows but it is on
the way.
We authenticate via a Kerberos database using our public Unix system. You
must enter a userid and password before you can connect.
Hope this helps!
========================================================================
Organization: University of Wisconsin
1) Current status: _XX_ Offer it ____ Plan to ____ On hold
2) Who's connected: _XX_ Faculty _XX_ Staff _XX_ Students ___ Others
3) Number of ports: _384 Today _480 Spr 95 _??? Fall 95 1000 ???
4) Whose access server? RS/6000 Modems? Multitech 14.4 & 28.8
5) What authentication server? RS/6000
6) Comments:
Active User and Other Dial Logins as of 940910:
Total login attempts to date: 1472290
Failures for some gross reason: 40690 ( 2.8%)
Failures by actual users: 47551 ( 3.2%)
Successes by actual users: 1153425 (78.3%)
Failures by unrecognized users: 230624 (15.7%)
Number of activated dial users: 24221
Actual users (logged in once or more): 3678 (15.2% of activated)
Successful attempts by these users: 1153425 (96.0% of actual)
Unsuccessful attempts by these users: 47551 ( 4.0% of actual)
Total login attempts by these users: 1200976 (326.5/user)
========================================================================
Organization: Universite Laval
1) Current status: F/S Offer it, ST Plan to, ____ On hold
2) Who's connected: yes Faculty, yes Staff, plan(95) Students, ___ Others
3) Number ports: 32 F/S Today, 64 F/S 70 ST. Spr 95, 64 F/S 110 ST. Fall 95
4) Whose access server? CISCO Modems? USR
5) What authentication server? TACACS
6) Comments:
PPP (no slip) (and ARA for Faculty/Staff)
F/S: FACULTY/STAFF, ST: Students
========================================================================
Organization: University of Rochester
1) Current status: ____ Offer it __X__ Plan to ____ On hold
2) Who's connected: __X__ Faculty __X__ Staff __X?__ Students ___ Others
3) Number of ports: ____ Today __16__ Spr 95 __?__ Fall 95
4) Whose access server? probably Xyplex Modems? probably US Robotics
5) What authentication server? probably 2x Sun Sparcstation 5 or similar
6) Comments: This is our first Kerberos requirement and there is some
question as to whether well-practiced Kerberos security is
too pricey for the value of the PPP service.
========================================================================
Organization: San Francisco State University
Steve - Housing is not doing anything yet at San Francisco State
University. However, our campus academic computing department has all of
the SLIP internet software available for FTP-ing, both Mac and PC. Faculty
and staff are very interested in this especially.
========================================================================
Organization: Trinity College
>>> 1) Current status: ____ Offer it __X__ Plan to ____ On hold
>>> 2) Who's connected: __X__ Faculty __X__ Staff __X__ Students ___
>>>Others
>>> 3) Number of ports: __2__ Today __8__ Spr 95 ____ Fall 95
>>> 4) Whose access server? DEC 700 and/or NT Server Modems? 28.8 USRobotics
>>> 5) What authentication server? Not worked Out
>>> 6) Comments: Worried about client configuration and user setup and support
>as much as anyhing .. will prob. use PPP as protocol for Win and Mac
>connections and take advantage of the free PPP client that comes with the
>$29.00 Internet Starter Kit book - but as yet undecided.
>>>
========================================================================
Organization: University of Denver
>
> 1) Current status: ____ Offer it __X_ Plan to ____ On hold
> 2) Who's connected: ____ Faculty ____ Staff ____ Students ___ Others
> 3) Number of ports: _0__ Today __?_ Spr 95 __?_ Fall 95
> 4) Whose access server? Modems?
> 5) What authentication server?
> 6) Comments:
>
We're in the early stages of this, but expect to move fairly rapidly
once things begin to fall into place. Our campus digital telephone
system which reaches all faculty and staff offices supports something
called ADI's (aysnchronous data interfaces) that handle data speeds up
to 19200 bps. We also have a pool of about 100 ADIs hooked to Cisco
terminal servers in the computer room.
Our first production SLIP will probably involve moving some of the
computer room ADIs to a different telephone number that that has
TACACS authentication. We'll try to adjust the number of ADIs in the
two pools to balance the SLIP and nan-SLIP loads.
Hopefully, all of this will go away as the campus buildings get
connected to the fiber network.
We're currently shopping for 28.8 kbps modems and terminal servers to
handle traffic from off campus. Our mini-pool of 10 14.4 kbps modems
is inadequate to handle current traffic. We don't plan to introduce
SLIP over modems until the pool of high-speed modems has been
expanded. However, its here already. Last night I noticed someone
(besides myself) running a presonal copy of tia. The question is no
longer whether or when to do SLIP, it's how to do it most efficiently.
========================================================================
Organization: James Madison University
1) Current status: ____ Offer it _X___ Plan to ____ On hold
2) Who's connected: ____ Faculty ____ Staff ____ Students ___ Others
3) Number of ports: ____ Today _12___ Spr 95 ____ Fall 95
4) Whose access server? starting investigation Modems?
5) What authentication server? starting investigation
6) Comments: We've had limited requests (25) for PPP/SLIP access.
We're concerned about line campers, charging schemes, and
user support. The local phone company is starting to implement
ISDN so I'm looking at more exotic solutions with better
management and authentication than simple modem pools and
terminal servers. It would also be nice to have one incoming
T1 line that multiplexes the incoming calls. Ascend Communications
offers a line of products that I'm looking at that is very
attractive but I haven't dicussed pricing yet and I fear what
I'm going to find out :-)
Fall 95 may have quite a few more lines implemented if the ISDN
tests and product evaluations and pricing are favorable.
========================================================================
Organization: Lesley College
1) Current status: ____ Offer it _X___ Plan to ____ On hold
2) Who's connected: ____ Faculty ____ Staff ____ Students ___ Others
(Will be everyone)
3) Number of ports: ____ Today _24___ Spr 95 ____ Fall 95
4) Whose access server? Not sure yet, most likely new CISCO 2511
Modems? 28.8 brand???
5) What authentication server? Not sure, looking into one solution for all
network needs.
6) Comments: Lesley College is currently putting in a campus-wide network
(12 strand fiber to each wiring closet, collasped backbone, Synoptics hubs,
Cisco routers, dual Cat5 run to each infomation outlet). The network has
been designed to support extensive dial-in from the very beginning (most of
our students are off campus as are our large group of adjunct faculty). We
will support PPP and ARA. New CISCO 2511 product looks good to us
(automatic protocol detection, central authentication, good fit with rest
of our network electronics, etc.) However, we are *very* interested in
seeing what others are doing in this area.
ps: Would like to know the *ratio* of dial-in ports to direct connects,
not just absolute number of ports. I would think that managmement and
bandwidth issues would also depend on what portion of your users are coming
in over dail-up lines, not just how many are. For example, we will
eventually be serving as large a population off campus we do on campus.
========================================================================
Organization: The Citadel
> 1) Current status: ____ Offer it __x__ Plan to ____ On hold
> 2) Who's connected: ____ Faculty ____ Staff ____ Students ___ Others
> 3) Number of ports: __4__ Today ____ Spr 95 ____ Fall 95
> 4) Whose access server? shiva--we like WinView(it's fast! Modems?
> 5) What authentication server? WInView but we don't have it.
> 6) Comments:
Citrix WinView looks like the best product.
========================================================================
Organization: University of Wisconsin, Green Bay
> 1) Current status: ____ Offer it __x__ Plan to ____ On hold
> 2) Who's connected: __x__ Faculty __x__ Staff __x__ Students ___ Others
> 3) Number of ports: ____ Today __x__ Spr 95 ____ Fall 95
> 4) Whose access server? CISCO Modems? MultiTech
> 5) What authentication server? TACACS
> 6) Comments: Subject to funding!!!
========================================================================
Organization: Columbia University
1) Current status: Plan to
2) Who's connected (who will be connected): Faculty, Staff
and Students
3) Number of ports: Today - 1
Spr 95 - 122
Fall 95 - 175-200
4) Access server: CISCO
Modems: US Robotics
5) Authenticatio server: TACACS
6) Comments:
Available from off-campus locations only. On-campus
locations have choice of 10BaseT Ethernet (all dorm wiring
will be complete by Fall 95) or PBX-based serial
connections.
========================================================================
Organization: Wellesley College
1) Current status: ____ Offer it ____ Plan to _X__ On hold
2) Who's connected: ____ Faculty ____ Staff ____ Students ___ Others
3) Number of ports: ____ Today ____ Spr 95 ____ Fall 95
4) Whose access server? Modems?
5) What authentication server?
6) Comments:
========================================================================
Organization: Oberlin College
1) Current status: ____ Offer it ____ Plan to _X___ On hold
2) Who's connected: ____ Faculty ____ Staff ____ Students ___ Others
3) Number of ports: __0__ Today _0__ Spr 95 _0___ Fall 95
4) Whose access server? Xyplex Modems? 2400 baud Gandolf
14.4 US Robotics
5) What authentication server? None - Currently
6) Comments: Just received Board approval for networking to all dorms.
Have had some requests from CS students wanting SLIP/PPP
but currently have decided not to allow it for security
reasons.
========================================================================
Organization: Tufts University
At Tufts University we are currently running a test of PPP access to
University services. The following information represents what we have done
to this point.
1) Current status: __x__ Offer it -
This test service is offered on a limited basis to a select audience
(45 users) of our choice. We support this group with 4 14.4 modems. This test
has been going on for about 4 weeks. We know we have to expand the
service to the entire University, but we have not completed the plan to do
so. To accomplish this task we would need to purchase additional modem
capacity, as well as plan resources to support the installation and
support of the process. We have question about the extent of that support
and where our responsibilities begin and end. We have questions about PPP
software licensing and distribution for both MAC and DOS platforms. We have
reservations about security and password maintenance, and we have questions
about external services (like Campus MCI) as a substitute for internal
support. As you can see we have more questions than answers at this time. I
would like to share any thoughts this group or you may have on this topic.
Please keep in touch.
2) Who's connected: __x__ Faculty __x__ Staff __x__ Students ___ Others
3) Number of ports: _4__ Today __?__ Spr 95 __?__ Fall 95
Eventually we will need to support an off campus student, faculty,
and administration population of several thousand. I don't know how many
port this will be, maybe 96 ports, maybe 128 ports, maybe 256 ports. This
could get expensive. We have a plan to wire the dormitories in the next 18
months. This will help off load some of the demand through the dial-in
modems.
4) Whose access server? Xyplex Modems? US Robotics
5) What authentication server? Kerberos
6) Comments: Any collaboration that we can do on the planning and
implementation of this will surly save time and effort. There is a pressing
need to offer this as a University service. We are beginning to plan now
because we are responsible for meeting that need. This is a timely and
important topic.
========================================================================
Organization: Massachusetts Institute of Technology
1) Current status: ____ Offer it _X_ Plan to ____ On hold
2) Who's connected: _X_ Faculty _X_ Staff _X_ Students ___ Others
3) Number of ports: _40_ Today _100_ Spr 95 _300?_ Fall 95
4) Whose access server? Xyplex Modems? Codex 3260 V.34
5) What authentication server? Kerberos
6) Comments:
========================================================================
Organization: University of Connecticut
1) Current status: ____ Offer it _X_ Plan to ____ On hold
2) Who's connected: _X_ Faculty _X_ Staff _X_ Students ___ Others
3) Number of ports: _1_ Today _20+?_ Spr 95 _100+?_ Fall 95
4) Whose access server? Xyplex 1620 Modems? USRobotics Sportster 28.8 V.34
5) What authentication server? Kerberos
6) Comments: Plan to charge $15-30/mo.(price not set yet) based on a 5 to 1
user to port ratio. High demand expected until we get dormitories
connected to the campus backbone (pilot in progress). Considering
state-wide service to various educational/government entities (to the
extent that our Internet providers' contract allows).
May also offer ARAP and IPX services thru Xyplex access server. Plan to
use Trumpet 2.0b for Windows client which seems to work quite well. OS/2
Warp has built-in support (expect Windows95 will too). Not sure about
Mac (Mac PPP?) yet.
======================================================================
Steve Morytko, University of Connecticut Computer Center
E-mail: steve@uconnvm.uconn.edu ; Ph: 203-486-1405 ; Fax: 203-486-5744
USMail; 196 Auditorium Rd., Storrs, CT 06269-3138
