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Elaine Craddick-Patt

Accessing Kerberos

break bar Connecting : Hardware and Software | Telecommunications Parameters
Logging On: Alaskanet and Tymenet | A Few of the Available Programs break bar

A security computer called KERBEROS has been added to the UACN dialup and AlaskaNet modems. This security system requires an additional login sequence. If you are using a modem, it is very important that you follow the extra login steps necessary for the kerberos system. It is not required if you are using a computer in a UAS computer lab.
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Connecting to the UACN - Kerberos Security System

Hardware and Software You Need

To use the UACN - ACAD1 Server you must first connect to the Kerberos Security System.
To connect to the Kerberos Security System you need:

Telecommunications Parameters

Every telecommunications program allows you to set the following communications parameters which identify your computer's language:
These define how data is formatted, transmitted and displayed. It is not important that you fully understand each term, but it is critical that your settings match those of the computer you will be communicating with - in this case UACN.

The baud rate, or bps (bits per second), is the speed of transmission. 1200 baud is approximately 120 characters per second. Most UACN connections use 9600 baud. Slower modems will usually work fine with faster connections, but at the slower speed. You usually need to tell your software to use the slower speed. Newer, fast modems using what is called v.42bis may have problems connecting to older UACN and AlaskaNet dialups. Contact Susie Feero for more information.

Data bits, stop bits and parity refer to the formatting of the data. UACN uses 8 data bits, 1 stop bit and NO parity. No parity is NOT the same as zero parity.

Duplex or Echo refers to how you see what you type:
UACN uses FULL DUPLEX. If your program is set to half duplex, you will see ddoouubbllee characters.

DUPLEX also refers to whether both computers can "talk" to each other simultaneously (FULL) or must take turns (HALF). Most computers can now talk simultaneously. When you see the term duplex in a context or personal computers it usually refers to echo.

The data travels at the speed of light. Normally, using phone lines, the time it takes for the character you type to go to the remote computer and return to be displayed on your screen is small and the character seems to appear as you type it.

However, some telephone circuits go by satellite. This distance to the satellite is 22,300 miles. Your data has to travel up to the satellite and down to the remote computer AND then travel the same route BACK to your computer. If the telephone circuit you use has one or more satellite links, you may notice a delay between the time you press a character and when you see it on the screen. Most of us have experienced the same delay when making telephone calls from Alaska.

Terminal emulation refers to how your computer screen reacts to text and control codes sent by the other computer. although UACN Mail does not really care, other programs we will use, such as SLED, will require VT100 or VT102 emulation.

To communicate with UACN, you must set your software to the following settings:
Find a telephone number on the list in Phone List.
If you are using a phone number from the list in the second column, you need to follow the instructions for Alaskanet Users.

Note: If you have call waiting, you may be disconnected from UACN when you get a second call. Check your phone book to see if call waiting can be disabled "for this call only." If it can, add those commands (often *70 or 70#) to the start of your dialing directory number or to the end of your modem initialization string.

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Logging On For The First Time

This may be the hardest part of the class, especially if you are using a modem and have never used telecommunications before. Be patient! After while, it really will get easier. We promise.

Note: Your social security number is your initial password. For security reasons, it may expire two weeks after your account is created if you have not logged on changed it. If this happens, you won't be able to log on and you must contact UAS to reset it for you. You can call Denise Blankenship or Susie Feero at 1-800-478-6653 or the Juneau Campus Computer Center at 907-465-6452.

If you are using a modem, be sure your software is set as explained in the first section. You may want to have a more "experienced" person help you.

It is difficult to write handouts that are clear for beginners. Puncuations is especially confusing. Generally, commas, periods and brackets are not to be typed as part of the command. They are part of the sentence where the command is being explained. For example, "Enter SEND, then type your message", you would not type a command after the word SEND.

When typing on a computer, ENTER means to type the text and then press the ENTER or RETURN key.

PLEASE READ THROUGH THIS EXERCISE BEFORE YOU START!