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- Global Linux-TIA HOWTO
-
- version 2.0T (updated 12/16/95) by Irish
-
- This document will describe how to get your Linux box to connect to a
- generic site via TIA, The Internet Adaptor. I take no responsibility for
- your use of this information, but corrections are welcome.
-
- I will not attempt to describe all that can be done over this connection
- once established, but I will refer you to other documents or sites that
- will contain the relevant information.
-
- That done, let's do it!
-
-
-
- 1.0 What is TIA?
-
- The Intenet Adaptor was written by the fine folks at marketplace.com. It is
- used to simulate a SLIP connection from a shell account. It costs $25 for a
- single user license, site licenses are available. It works with any client
- OS that uses standard TCP/IP and SLIP networking, and clients.
-
- 1.1 How does TIA work?
-
- It is important to understand how TIA works in general, to be aware of its
- limitations. First, you do not need to install TIA on your machine. It
- runs on your remote host only. What you need is the TCP/IP and SLIP
- protocols installed in your kernel (more on that in a bit), and some clients.
-
- Here's what happens: you send network requests from your machine to your
- remote host over the SLIP link. TIA grabs them and sends them out to the Net
- at large. Then, incoming data is sent back from the Net to your account on
- the remote host, where TIA grabs it and sends it back over the SLIP link
- to your machine. So, to the Net it appears as if you are working out of
- your account on the remote host, but to you it looks like you are really
- connected right to the Net.
-
- As you can see, this can confuse stuff that is incoming from the Net. For
- example, talk doesn't work via TIA, because the incoming talk request
- tries to start the remote hosts talk daemon, not yours.
-
- The other big difference between TIA and real SLIP is you are NOT assigned
- your own IP address; remember, you are only converting a dialup account to a
- SLIP connection.
-
- 1.2 What about Term?
-
- What about it? My opinion; Using Term is like using a crank to start
- your car, a lot of work and completely unnessesary. Of course, if you
- don't have root access to your machine for one reason or another, and
- you can't persuade someone who does to install SLIP and dip, then you
- won't have much choice. If you really want to know more about Term, read
- the HOWTO on Sunsite.
-
- 1.3 What about SLiRP?
-
- This is new, and it's free because it's GPLed. TIA isn't free, but it's
- real cheap, real stable, and well supported and documented. Go ahead and
- try it if you wish. I have heard that the following information works for
- SLiRP with only minor modifications, but please don't mail me with
- questions because I really don't know anything about it. Don't get me
- wrong, obviously I have nothing against free software, but TIA is what
- I know and use. Besides, for me TIA is free, because the Admin here
- purchased a site license. Maybe you can convince yours, it's worth it,
- for you and them.
-
-
- Enough already! How do I set it up?
-
- 2.0 Preparing your Linux machine
-
- In a nutshell, here's what's required. I'll explain each of these in detail.
-
- -> Compile your kernel to include SLIP and TCP/IP
- -> Edit some files in /etc
- -> Install and configure dip
- You will also need to get the TIA binary appropriate for your remote host
- and install it. All of the relevant info for this is available at TIAs home
- site.
-
- NOTENOTENOTE: TIA 2.0.5 is out now. It supports, among other things,
- CSLIP and PPP. There are very few changes required to use CSLIP, and they
- are noted below. A PPP HOWTO will be forthcoming soon, as well as
- documentation on some new features. Watch this space!
-
- That's it! Let's get started.
-
- 2.1 Compiling your kernel
-
- If you have never done this, you should. And you should read the FAQ
- first, but don't worry, it's easy. If you want, you can e-mail me and
- I'll help.
-
- I'll assume that you have here, for the sake of brevity. When you 'make
- config', look for "Network Devices". Say 'y', of course, then say 'y' to
- SLIP and TCP/IP, (Tia 2.0.5 users: say 'y' to CSLIP instead/also) and 'n'
- to everything else, unless you have ethercards or need some other protocol
- for something else. If you don't do this, it won't work! Finish compiling
- and installing the new kernel, then,
-
- 2.2 Edit some files in /etc
-
- These files will set up your routes to your remote host. /etc is the
- directory for system configurations. Replace everything in double quotes
- with the appropriate values, naturally (but don't include the quotes -
- they are there for reference). There are three files you need to edit,
- they are:
-
- /etc/hosts:
-
- 127.0.0.1 localhost
- 192.0.2.1 "your.hostname.domain"
- "XXX.XXX.XX.XX" "remote.hostname.domain remote" #<-- Note the abbreviation.
-
-
- /etc/host.conf:
-
- order hosts, bind
- multi on
-
-
- /etc/resolv.conf:
-
- domain "yourdomainhere"
- nameserver "XXX.XXX.XX.XX" #<- Usually the same as in /etc/hosts
-
-
- To use an NNTPserver, put this line in your /etc/profile:
-
- export NNTPSERVER="remote.hosts.nntpservername"
-
- 2.3.1 Dip
-
- Dip is what you will use to dial up the remote host, start TIA, and
- convert the line to SLIP. It comes in the "N" set of Slackware, along
- with a bunch of clients and utilities, some of which you may want to
- install also =). It is also available at Sunsite in an individual tar file.
-
- Once you have it installed, you will need to have a dip script, Here's
- a sample, just plug in the appropriate stuff where the double quotes
- are (but don't include the quotes, they are there for reference).
-
- ----------CUT HERE--------------------------------
-
- main:
- get $local "your.hostname.domain"
- get $remote "remote.hostname.domain"
- port cua"?" #<-- Your port here
- speed 38400 #<--You may be able to use 57400 in newer
- reset # kernels
- init AT "string of commands" #<--don't use spaces in your AT command string
- wait OK 5
-
- # This will redial. If it doesn't work, play with the wait time (listen
- # to your modem). If it still doesn't work, mail me.
- # See also; the note at the bottom of the script re: error codes.
-
- dial:
- dial "phonenumber"
- print Dialing...
- if $errlvl != 0 goto error
- wait BUSY 20 #<--You may need to change this wait time
- if $errlvl == 0 goto dial # to suit your modem
-
- login:
- print Connected and Logging in...
- wait ==> 60 #<-- This wait and send get me past my
- send 4\n #<-- hosts Annex. Change for your site!
- wait ogin: 60
- if $errlvl != 0 goto login_error1
- send "LOGIN"\n
- wait assword: 60
- if $errlvl != 0 goto login_error2
- send "PASSWORD"\n
-
- loggedin:
- wait "SYSTEM PROMPT" 60
- if $errlvl != 0 goto shell_error
- send tia\n
- wait software. 60
- if $errlvl != 0 goto tia_error
- print Starting TIA...
- get $mtu 296 #<--Tia recommends 1500, but this is faster
- default #interactively. Ftp may be slower, so adjust to taste.
-
- done:
- print CONNECTED to $remote with address $rmtip
- mode SLIP
- # TIA 2.0.5 users: change the above line to
- # mode CSLIP
- goto exit
-
- error:
- print Dialing Error
-
- login_error1:
- print No Login
-
- login_error2:
- print No Password prompt
-
- shell_error:
- print No shell prompt
-
- tia_error:
- There was a problem starting TIA
-
- exit:
- \r #<--This will error out with the -v flag, but work when
- #run normally (ends dip at a local prompt).
-
- -------------CUT HERE-----------------------------
-
- 2.3.2 Dip notes
-
- Newer versions of dip don't return modem status codes (BUSY, NO
- CONNECT, etc.), they use numbers instead. Here's a table:
-
- 0 = OK
- 1 = CONNECT
- 2 = ERROR
- 3 = BUSY
- 4 = NO CARRIER
-
- This would make your dial section look like this:
-
- dial:
- dial "phonenumber"
- print Dialing...
- if $errlvl != 0 goto error
- wait 1 20
- if $errlvl != 1 goto dial
-
- Thanks to Lee Olds (lee@eskimo.com) for that bit.
-
- \n = newline, \r = carriage return. You may require one or the other (or
- both) in the appropriate places. If the ones provided don't work, experiment.
-
- After editing this file, rename it, say, remote.dip and put it in /root.
- Then, as root, run 'dip remote'. Use the -v flag the first time to debug
- it ('dip -v remote'), this will show you all the steps dip takes.
-
- Dip will only run as root, but there is a way to make it run from a user
- account. For now, if you need this info, ask. I may include it in this
- file later if enough people want it.
-
- If dip errors out right away, try removing the comments from the script.
-
-
-
- 3.0 Now what?
-
- Hey, if all went well, you are now connected to the Net! Try a 'telnet
- remote' (remember that abbreviation in your hosts file?). You should get
- the remotes telnet login prompt. Go on, try it! You can now telnet/FTP/etc.
- anywhere on the Net from your local machine. How? Your machine is using
- the remote as a nameserver to resolve addresses (resolv.conf). Experiment,
- find out what works and what doesn't.
-
- You will not be able to use services that are not provided already on your
- remote host! For example, if your server doesn't allow telnets, chances
- are you can't do it either. Why? Because TIA is only re-directing what
- is already available.
-
- 3.1 News and Mail
-
- I have found a News Reader that is fairly simple to install and use. It
- is a true NNTP newsreader, which means no local news transport is required
- to make it work (you don't have install Cnews or INN). It does require
- that you have access to an NNTPserver, naturally, but most ISPs have this.
- If you are able to use MSWIN apps like WinVN with your provider, this will
- work too. It is text based, but has color and mouse support, and runs
- fine in an rxvt window. SLRN is still beta, but I have been using it
- exclusively for a while now, without any problems.
-
- I am still looking for a good Mail Reader of the SMTP/POP3 variety, that
- will work no matter what state the local mail transport is in (from
- non-existent to fully functional). It doesn't have to be X based, but
- that would be a plus. If you have any suggestions, please send tham along
- to me. I am aware of things like popclient, but this seems a little
- clumsy to me, and I'd like to find a mail reader that at least handles
- the retreival chores.
-
- 3.2 Mosaic/Netscape
-
- Obviously, you will need to have X running for this to work, but it's
- a simple matter of FTPing the binary, unpacking it, and installing it.
-
- 3.3 Remote X
-
- You can run remote X applications via TIA. The TIA-X HOWTO is
- available at the places listed below.
-
-
- 4.0 Misc.
-
- If I've left anything out, or you still have questions, I read my mail
- daily. This information gets updated fairly regularly, so keep checking
- back every so often (I'll change the version numbers). Naturally, the
- more you contribute, the more info will be included here, so don't
- hesitate to tell me about whatever you have to offer.
-
- If you would like some help, or are having trouble with your setup, I'll
- help but you must send me the following info:
- 1. A copy of your three /etc files.
- 2. A copy of your script output, run with the -v flag (please remove
- your password from this!)
-
- Even if you don't have anything to contribute, but used this info
- sucsessfully, PLEASE MAIL ME. I want to know how useful this really is.
-
- 4.1 References
-
- Sunsite is the FTP site sunsite.unc.edu, a veritable plethora of everything
- Linux, including almost every FAQ, HOWTO, and README written.
-
- Marketplace.com is the home of TIA, the only place it is available.
-
- The homesite of the newsreader SLRN is space.mit.edu, in /pub/davis
-
- I am Irish, irish@eskimo.com, available for comment on Linux almost
- everyday, when I'm not petting my cat or hugging my kid.
-
- This HOWTO is available in the following places:
- http://www.eskimo.com/~irish
- ftp://ftp.eskimo.com/u/i/irish
- ftp://sunsite.unc.edu/pub/Linux/docs/HOWTO/mini/TIA
-
-