It divides the application data into Packets. In addition a code for error recognition (Checksum) is packed to increase the reliability of the transfer. Finally, each packet receives a consecutive number so that they can later be reassembled in the correct sequence.
IP (Internet Protocol)
Internet Protocol undertakes metaphorically the role of the post and sends the individual TCP
packets over the Internet to the addressee.
Telnet:
Telnet allows individual computers the possibility of making use of foreign computers (Remote Login)
i.e. their programmes or data, as though one were actually sitting at the console of the foreign
computer.
User ID:
Authorized access to a Host (in this case RRZ). Also Project or Standard (restricted) User ID.
MacTCP Installation
MacTCP has 3 essential constituents:
These three are found at given positions in the "System File":
- MacTCP as Kontrollfeld/Control Field in the file Kontrollfelder/Control Field
- MacTCP DNR in the Systemordner/System File
- MacTCP Prep in the file Preferences (automatically installed following the initial opening of MacTCP)
MacTCP Set Up
MacTCP Configuration
First Step:At initial configuration MacTCP should be opened over Kontrollfelder/Control Field in the Apfelmenü/Apple Menu and PPP activated by mouse click.
Second Step:
Then one chooses the Button Weitere Einstellungen/Further Settings and the following window
is opened:
1. Obtain Address
Here MacTCP is informed whether a static, a server conferred, or a dynamic address is to be used.
The RRZ generally confers IP Addresses through the server.
A server conferred IP Address means that at every subsequent Login (system start) the user obtains an
IP Address for the duration of the session.
Static IP Addresses are allocated through a User Account.
2. IP Address
Setting as above: Class B/ Mask for Subnetwork: 255.255.255.0
3. Routing Information:
Setting as above: 0.0.0.0 as Gateway Address
4. Domain Name Server Information:
Setting as above: public.uni-hamburg.de, 134.100.33.240
FreePPP 2.5 vt 2 Installation
This programme consists of 2 essential components:PPP Monkey Data 1 and Install PPP2.5v2
By clicking on the Installation Programme FreePPP Monkey Data 1 the following window is displayed:
By clicking on the button Install the following window (with the monkey) is displayed:
By again clicking on the button Install the following window is displayed:
Following installation a new Login (system start) should be executed.
FreePPP Configuration
Following the Installation of FreePPP and a new Login (system start) the following menu line appears:
By clicking on the above symbol the following Pop-Up Menu appears:
Initially choose the Menu point Open FreePPP Setup:
By clicking on the small arrow head, below left, the following menu appears:
To verify the MacTCP Setup click on Open MacTCP
By clicking on Weitere Einstellungen the following window appears:
Die Einstellungen sind wie unter Punkt Konfigurierung von MacTCP vorzunehmen
Weiter geht es mit der Konfiguration von FreePPP
Mit dem Button ´New´kann ein neues Profile angelegt werden, wobei als ´Server name´ ein beliebiger Name gewählt werden kann.
Falls Sie eine Nebenstellenanlage besitzen, muß vor der eigentlichen Telefonnummer eine 0 gewählt werden. Ist dies nicht der Fall, dann lautet die Telefonnummer 41532.
Connect: directly. Anschließend wird die Userkennung mit einem großen P davor und das Password eingegeben.
Falls diese Variante Schwierigkeiten bereitet, sollte man die Verbindung mit einem Connection Script versuchen.
Beim Auswäheln der Connect-Weise ´Using Connection Script´ erscheint in der darauffolgenden Zeile ´Edit connection script´. Auf diese Zeile mit der Maus klicken und folgender B ildschirm erscheint:
Es gibt eine Auswahl-Fenster ´Do´ und ein Text-feld ´Text:´ Im Auswahlfenster erscheint beim Anklicken ein Pulldown-Menü. Im Textfeld können die Kommandos eingegeben werden.
Folgende Zeilen einfügen:
Das Zeichen Back-Slash \ bekommt man der Tastaturfolge alt + shift+ 7 .
Unter dem Menüpunkt Options braucht nichts ve
Anschließend kann die PPP-Session eröffnet werden.
The setting should correspond to the modem employed. For example as above:
1. Port Speed
Modem maximum transmission rate. A 14.4 modem should have a setting of 38400.
A 28.8 modem should have a setting of 57600.
2. Flow Control
CTS und RTS, if supported by the modem, or none. FreePPP does not support XON/XOFF.
3. Dial Type
Normally Pulse Dial
4. Phone num
The telephone number 41532 is available for the use of PPP over the RRZ's modem service.
5. Modem Init
Generally unnecessary, as it is initialised; otherwise consult the modem manual (must be
Hayes AT command compatible)
FreePPP does not support XON/XOFF.
6. Modem connect timeout
The length of time the modem waits for a connection to the Host. (at least 90 seconds).
7. Connect Script
Here no setting is necessary. (Parameter settings to connect to special Hosts; for the RRZ
unnecessary).
8. Authentication
