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1994-06-01
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495 lines
DEMON INTERNET LTD
==================
42 Hendon Lane
Finchley
London
N3 1TT
081-349 0063 (London)
031-552 0344 (Edinburgh)
email internet@demon.net
DEMON.TXT - GENERAL INFORMATION ON DEMON AND ON MAKING A CONNECTION.
Last updated 30th May 1994
The latest version of this document is available from
ftp.demon.co.uk:/pub/doc/Demon.txt
Contents
========
1. The Service
2. Background
3. Servers and Connectivity
4. Internet Growth
5. How to Contact Us
6. Types of Connection
7. The Login Sequence
8. The Demon Machines
9. Archimedes Users
10. Sundry Connection Information
11. Setting up NetManage Chameleon
12. Yellow Pages
13. Other Information
1. The Service
==============
We are offering a direct connection to the world-wide Internet.
There are various different services offered, as listed in
Services.txt, but the basic Dial-Up connection provides powerful
connection with your computer becoming a node on the Internet. You
get an Internet Address and become part of our domain. An example
is:
158.152.7.25 yourmc.demon.co.uk
where you decide the name of your nodename "yourmc". You can have
unlimited mail address at the name e.g.:
Examples: grahame@yourmc.demon.co.uk
cliff@yourmc.demon.co.uk
postmaster@yourmc.demon.co.uk
When you log on you will be connected to the Internet so that you
may perform transfers directly between your computer and other nodes
all over the world. You will be able to have multiple sessions so
that you can up/download mail/news, transfer files and use
information services all at the same time.
You must use software capable of talking the Internet Protocol -
this will be either SLIP or PPP. We have free software for all
types of computer and considerable expertise in these matters and
will be happy to advise you.
Please read the file Welcome.txt for other general information about
our service and the Internet.
2. Background
=============
The staff of Demon Systems Ltd, an established software house,
started Demon Internet on 1st June 1992 and it was the first system
in the United Kingdom to offer low cost full and complete Internet
access. It still provides unrivalled power and value for money
today. It was started based on the encouragement of about 100
founder members who discussed the idea on a conferencing system,
Compulink Information Exchange, and were brave enough to pay a years
subscription in advance. Our ambitions were to attain just 200
members in the first year to cover our anticipated financial outlay,
ignoring any time spent. After about two weeks we realised we
needed nearer 400. At May 1994 we have over 5,000 subscribers. All
revenues have been used to supply more resource so that our service
will grow along with its membership. Demon Systems has always
specialised in professional customer support for its relatively few
Clients - those skills have been successfully extended to handle
thousands of Clients on Internet.
3. Servers and Connectivity
===========================
The service runs on a selection of Suns and Apricot Unix machines
centred around our Network Operation Centre in Finchley. Connected
via Ethernet, as well as various routers, is the news server
(news.demon.co.uk) which is a Sparc IPX (dis.demon.co.uk). A Sun
Sparc 10 post.demon.co.uk. handles the mail. Nether.demon.co.uk, a
Sparc, handles routing. ftp.demon.co.uk is another Sun which is our
ftp server. It is our policy to use distributive processing as we
believe this can provide us with the most powerful, value for money,
hardware redundant setup. We have a 256K line connected to
Sprintlink in the United States making us a totally independent
Internet service provider. We peer with EUNet and PIPEX to ensure
good connectivity in Great Britain as well as having on order a 384K
line to the JANET/JIPS UK academic network. We are proud to have a
direct line into the Department of Computing Imperial College London
(doc.ic.ac.uk) from our Central London PoP (styx.demon.co.uk).
doc.ic is the biggest ftp and archie site in Europe. We have over
150 dial up lines operating in racks of US Robotics V32bis modems on
all digital exchanges. In addition we have a number of dedicated
phone lines for our network customers, private staff numbers etc.
We have may PoPs (Points of Presence) bringing local call access to
a large proportion of the UK. Our central London PoP provides
leased line connections at a cheaper rate for those customers in the
071 area. Further lines and PoPs are being added continuously.
4. Internet Growth
==================
You may have heard that use of the Internet is growing at a very
fast rate. The take-up of our service certainly bears this out as
it is averaging about 25% per month. This take up varies a great
deal and has caught us out on occasion. We respond quickly to this
but are held up sometimes by the delivery of equipment and leased
lines etc.. We are committed to providing enough resource for
current as well as expected take up but if you are caught in one of
our peaks (or troughs depending on how you look at it) then please
bear with us as we always make every effort to make these periods as
short as possible.
5. How to Contact us
====================
The contact points for us are:
Office number (Sales etc.) 081-349 0063
Edinburgh office number (Sales etc.) 031-552 0344
Help Line 081-343 3881
The help line is available 9am to 9pm on
working weekdays. It closes between 12:30pm
and 2pm. After 9pm please call for
emergencies only unless otherwise advised on
the night.
Fax 081-349 0309
Dial up modem lines:London 112 081-343 4848
Warrington 8 0925 411383
(Local to Manchester and Liverpool)
Edinburgh 8 031-552 8883
Reading 8 0734 328989
Sunderland 8 091-522 5005
(Local to Newcastle and Durham)
Yorkshire PoP: 16
Leeds 0532 415890
Sheffield 0742 705565
Hull 0482 495580
Bradford 0274 755066
Email: General support, enquiries internet@demon.net
Sales enquiries sales@demon.net
Modem and other orders orders@demon.net
Accounts accounts@demon.net
Please do not mail questions to individual people as a rule as
internet@demon.net gets read by the entire support team and so you
can benefit from several people's knowledge and experience. In
addition, should you mail somebody who is away from the office
(holiday etc.) you will not receive a reply until their return.
Please note that we cannot accept suuport questions via fax or
posted mail.
6. Types of Connection
======================
You may make a SLIP (Serial Line Internet Protocol) or PPP (Point to
Point Protocol) connection with us. Do not worry if these do not
mean anything to you. You may download free or shareware software
for a vast range of computers from us and we will advise you on the
relevant files. If you already have ftp access, say from work, then
you may use anonymous ftp from ftp.demon.co.uk. Alternatively the
market for TCP/IP packages is growing rapidly and you may use any of
these which support PPP and/or SLIP.
Every new account is set up as "ASK". This means that as part of
your login sequence, you will tell the computer whether you are
about to make a PPP or SLIP connection. Thus if you have
successfully connected a PC to us making a PPP connection and you
wish to set up a Unix box with SLIP, you can do so without any
change to your account.
7. The login sequence
=====================
The software for PC DOS users, Amiga and some others already handles
this for you. If your software doesn't automatically handle the
dialling and connecting to the gateway then you will have to setup
your own dialler script.
The dialling script needs to use 8 bits standard comms - that is 8
bits, no parity and 1 stop bit. The sequence is:
wait for ogin: the login: prompt
wait for 1 second for our machine to be ready
send your nodename (eg. yourmc - not yourmc.demon.co.uk)
wait for word: the password prompt
send your password
wait for ocol: the protocol: prompt
send ppp or slip (or, for Suns running pl6, rfc1172)
wait for HELLO
When waiting for messages such as the above remember that your
dialler will be case sensitive. Once you have received the HELLO
you should start your ppp or slip connection. The gateway sends you
the motd (message of the day) and then sends HELLO. Some diallers
buffer the information being received and will not successfully
handle a long motd. Therefore we try to restrict this message to 2
or 3 lines. Important announcements are always made in the
demon.announce newsgroup.
If you are running on an Apple Mac then we advise that you stick to
alphabetic and numeric characters for your password as some Mac
diallers filter out other characters.
Please note that the nodename and password are case sensitive. Once
connected you may change your password by telnetting to
gate.demon.co.uk and logging in as your nodename.
If running on a Sun and using the free "pl6" PPP software downloaded
from us, then at the "protocol:" prompt you should send "rfc1172".
Other parameters may be sent at the Protocol: prompt including:
idle=0 Defeat our idle out time
idle=240 Set our idle out time to 240 seconds
mru=1500 Set the Maximum receive unit size
idle=0,mru=1500,PPP Combine commands
If you have communication problems, refer to /pub/doc/Modem.txt for more
information. Ring the support line if you are still stuck.
8. The Demon Machines
=====================
gate.demon.co.uk 158.152.1.65 London host
post.demon.co.uk 158.152.1.72 handles mail
dis.demon.co.uk 158.152.1.69 ftp server
ftp.demon.co.uk CNAME dis.demon.co.uk
newnews.demon.co.uk 158.152.254.254 news server
news.demon.co.uk CNAME newnews.demon.co.uk
nether.demon.co.uk 158.152.1.71 router
disme.demon.co.uk 158.152.1.70 accounts server
dismayl.demon.co.uk 158.152.1.76 IRC etc.
ns.demon.co.uk 158.152.1.193 a parallel port!
hel.demon.co.uk 158.152.5.65 Warrington host
clootie.demon.co.uk 158.152.6.65 Edinburgh host
styx.demon.co.uk 158.152.1.73 Central London host
ragnarok.demon.co.uk 158.152.12.194 Reading host
thokk.demon.co.uk 158.152.7.194 Sunderland host
tyr.demon.co.uk 158.152.14.194 Yorkshire host
9. Archimedes users
===================
The Archimedes software available for download from our guest
account is a version of the KA9Q software that a lot of our PC users
use. There is documentation supplied with it. We do not have an
Archimedes computer in the office but have an active news group of
users. This is of use to you only when you are connected and can
send and receive news of course! A lot of our users frequent the
Arcade BBS and are always willing to answer questions. Arcade is on
081-654 2212.
10. Sundry Connection Information
=================================
The following information may already be coded into the software you
download from us (e.g. PC DOS users) but in case it is not, or it is
out of date:
The computer that you connect to is called gate.demon.co.uk and its
IP address is 158.152.1.65. News is offered using Network News
Transfer Protocol (nntp) on the service news.demon.co.uk, currently
a nickname for newnews.demon.co.uk 158.152.254.254. If retrieving
files from us using anonymous ftp, please connect to ftp.demon.co.uk
and log in as anonymous (or "ftp" if you can't spell anonymous).
ftp.demon.co.uk is currently the same as gate but may not always be.
Mail is handled by post.demon.co.uk which is 158.152.1.72.
We are running a nameserver on gate and you should resolve at our
nameserver by IP address: 158.152.1.65. For Unix users this means
have a file /etc/resolv.conf containing:
domain demon.co.uk
nameserver 158.152.1.65
Suns do not resolve by default, they use Yellow Pages (sorry NIS).
To make them work on the Internet, you need to rebuild the shared
libraries. Easier still, copies of the prebuilt shared libraries
are held on ftp.demon.co.uk in /pub/sun. Copy the right one to
/usr/lib on your Sun and reboot.
Also, under Unix systems, you will need to add a default route.
This involves executing the following command after the SLIP or PPP
interface is established:
route add default 158.152.1.65 1
Don't forget to delete the route before detaching your interface or
you may crash your kernel. In addition, this default route should
be set up early on in your connection script so that mail, which
will try to send and receive as soon as the connection is made, can
have a route to follow.
A dial in sequence on Unix machines may look like this:
"" ATZ OK ATDT0813434848 CONNECT "" ogin:-\d\c-ogin: \dmachine word:-
\d\c-word: yourpw otocol:-\d\c-otocol: ppp HELLO
If running a Sun without a LAN you may have the following problem:
You may get on and route to our gate machine and the rest of the
world, but not contact anything else on 158.152.0.0. You will
probably have a netmask of 0xffff0000 on your Ethernet interface
(which is there by default on a Sun). The fix is either to remove
the le0 interface from /etc/rc or to put a netmask of 0xfffffffe on
it.
11. Setting up NetManage Chameleon
==================================
If using NetManage Chameleon, a commercial product written for DOS
Windows 3.x, you need the following in PPP.INI in your NetManage
directory:
[DEFAULT]
SCRIPT=login: $u$r word: $p$r Protocol: PPP,$c$r HELLO $r
TYPE=SLIP
[SLIP0]
SCRIPT=login: $u$r word: $p$r Protocol: PPP,$c$r HELLO $r
TYPE=SLIP
[PPP0]
SCRIPT=login: $u$r word: $p$r Protocol: idle=600,mru=1440,$c$r HELLO
$r
TYPE=PPP
To set up the Interface - Start Custom
Under Interface Add a single PPP interface
Remove any Ethernet or other LAN interfaces that you might have
added in installation (unless you really need them)
Under Set-Up
Add your own IP Address that you got when setting up your password
Leave the Subnet Mask as 255.255.0.0
Host Name is your 4 - 8 character nodename
Domain Name is demon.co.uk
Port is 19200, 8, n, 1 Hardware Flow control, COMX (19,200 is the
DTE speed that your computer talks to your modem at and you may wish
to vary this) want another speed.
Modem - most of the defaults will work e.g. ATQ0V1F0E0&K3W1s95=47
works with a microlin FX32+ which gives more info during login
Dial - increase the time-out to at least 60 seconds and check the
start Log so you can see what is happening. Put in the phone number
of the nearest PoP.
Login Settings
Your Demon User Name - The 4-8 character nodename
Your Password
Startup command - ppp
Interface Name - PPP0
Route Entries - None Required
BOOTP - leave as 0.0.0.0
UNDER SERVICES
Default Gateway - 158.152.5.65 (or another Demon default gateway)
Frequent Destinations - only used on LANs to reduce ARP's - so
ignore
Domain Name Servers - 158.152.5.65 and 158.152.1.193
SNMP - ignore
Host Table - any name to address translation that you don't want to
depend on the DNS for.
SAVE THE FILE as TCPDEMON.CFG and close Custom, saving changes to
TCPIP.CFG if asked.
Re-open Custom
Change the telephone number under dial to the other Pops you might
use and save these as new TCPXXXX.CFG files.
Then open the config file you use mostly and 'Connect'
If you do not get a Log Window (because you are using an older
version) Drop
Settings Log to see the connect sequence.
Chameleon does have a few stability problems with Mail, but logging
in to demon is not one of the problems!
12. Yellow Pages
================
If running NIS Yellow Pages you should ensure that /etc/passwd
contains an entry for your nodename. ypbind is one of the processes
that hold's Sun's Network Information Service (aka Yellow Pages)
together. When you are running NIS, you don't have a real
/etc/passwd - you have a minimal one with a special marker at the
end which says in effect "now include the NIS password file" which
is held in /etc/yppasswd on the master NIS server. If you can no
longer access the master server (e.g. ypbind stops working) then you
only get the minimal entries from the real passwd file. This can
mean that sendmail thinks you no longer exist and can bounce your
mail.
13. Other information
=====================
At any time during your connection you can type finger
<hostname>@post.demon.co.uk to see how many mail messages you have
waiting to be downloaded to you.
To see the MOTD (Message of the Day) type finger motd@gate.
To look up mail and IP information about a host type finger
<host.name>@post.demon.co.uk.
The Internet is a large and complex network of networks. As will all
complex systems it does not always work perfectly. Parts of the
network sometimes fall over, resulting in portions of the world
either being unreachable or perhaps only reachable via a more
roundabout/slower route. Similarly, email is not an exact science.
Though things have improved dramatically during recent years there
is still no guarantee that email will reach it's target.
Our mail and news gateway machines may sometimes reject your
incoming connections. This is often due to peaks in the loading of
the machine. Treat such rejections as you would a telephone busy
tone. Please contact us if this is a recurring problem so that we
may ensure the smooth running of the service.
Whilst we strive to provide as full and reliable a service as
possible there are occasions when we have to shut down parts of the
system either for maintenance or emergency repairs. We try to give
ample notice of such service interruptions by mentioning them in the
message of the day which is displayed during login and also in the
newsgroup demon.announce.
Occasionally we have to act quickly to reduce the impact of a
particular problem. This means that we may have to ask you to
disconnect your session if you are using an affected part of the
system. Depending on how urgent the problem is we usually attempt
to contact any connected sites to ask them to log off when
convenient rather than just killing connections. It isn't practical
to make dozens of telephone calls so we use electronic means to
attempt to contact each site. If you do not accept/respond to one of
ttylink/otalk/ntalk then we may have no choice but to kill your
connection.
Even if Usenet News is not one of the features of the system that
you intend to use regularly, it is in your interest to at least read
the demon.announce newsgroup. If you are on a PC then you should
additionally read demon.ip.support.pc.announce. There are other
groups for other computers and a full list is available on
ftp.demon.co.uk:/pub/news/active.zip. These will keep you in touch
with aspects of the system that directly affect you.
See ftp.demon.co.uk:/pub/doc/Welcome.txt for more general
information on aspects of our service and how to find yet more
information.