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DUN: DIAL-UP NETWORKING

Correct DUN settings help a lot

Dial-Up Networking (DUN) is the Windows98/95 software that establishes your modem connection. It gives us a user-friendly interface for important modem settings.

Many settings are involved and vary in importance from personal preferences, through optimum settings, to vital settings without which you will not connect at all.

Unfortunately they are all mixed up together!

SPECIAL REQUIREMENTS

First check these

The following Dial-up Networking (DUN) settings are standard and should suit the majority of Home PC users with a modem. However, when you are familiar with the settings, you might contact your ISP and -

Check these
(a) any special Commands he recommends (there 'should' not be any!)
(b) any special requirements he may have (especially for Compression)
(c) his own MaxMTU (it should be 576 - read maxmtu on this Site)

And remember:
If your Password is not remembered then you can install Microsoft Client for Networks or Microsoft Family Logon, and it will work after successfully connecting at least once with the option checked. However, Client is not required for a Internet connection and does use some of your main memory.
    ( Start • Settings • Control Panel • Network • Add • Microsoft )

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DUN SETTINGS [1]       All HomeUsers

Dial-up Networking Settings

Double-click My Computer and then Dial-Up Networking
Right-click on your ISP Server "Connection" icon

Select Properties and then the
General tab

Area Code: enter the correct code for your ISP's phone number
Telephone number: enter your ISP's dial-in number
Country Code: enter the correct code for your ISP

Y Untick Use area code and Dialling Properties (but Tick for some European countries)

In Connect using: ensure the correct modem make/model is selected

Click on the Configure button and then on the General tab

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DUN SETTINGS [2]

General tab

Select the Maximum speed your modem can use. Use the same speed you select for 'Maximum speed' in Control Panel/net/Properties.

N Untick Only connect at this speed (a lower speed will be used if 'conditions' are poor)

Now click on the Connection tab
and unless you have special requirements, make sure you have
Data bits: 8
Parity: none
Stop bits: 1 (that is the number ONE)

Click on the Port Settings button and then

X Tick Use FIFO buffers (you can use MSD from DOS to check your FIFO status)

Receive Buffer: slide it to the highest setting

Transmit Buffer: slide it to the highest setting

Click OK

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DUN SETTINGS [3]

Click on Advanced and then

  X Tick Use error control (reduce phone line errors | Untick for online games)
  X Tick Required to connect (Untick if you have trouble connecting)
  X Tick Compress data (enhance download by compressing data)
  X Tick Use flow control (amount of data stored in memory buffers)
  X Tick Hardware RTS/CTS (but Untick for a winmodem
  N Untick Software (XON/XOFF) (but Tick for a winmodem)
  N Untick Record a log file (unless you are troubleshooting a problem)

In Extra settings (intended only for debugging purposes) you can optionally enter register commands which may optimize your connection e.g. AT&F1. These may be specific to your own modem (see your modem manual). On USR modems you can use &K3 to turn off MNP5 compression and force V.42 compression (for the current session).

Click OK back to the Server types tab

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DUN SETTINGS [4]

Server types tab
Type of Dial-Up Server - you need PPP:Windows 95, Windows NT 3.5, ...

In Advanced options:
  N Untick Logon to Network (optional)
  N Untick Enable software compression (unless your ISP suggests it)
  N Untick Require encrypted password (unless you want one!)

In Allowed network protocols:
  N Untick NetBEUI (you do not need it)
  N Untick IPX/SPX Compatible (try Tick if you game online a lot)
  X Tick TCP/IP (you need it)

Select the TCP/IP Settings and then
  X Tick Server assigned IP address (unless you have special ISP instructions)
  X Tick Specify name server addresses - enter the numbers supplied by ISP, if any
  N Untick Use IP header compression (surprisingly most users say that OFF is better)
  X Tick Use default gateway on remote network

Scripting tab   &   Multilink tab     - You can normally leave these alone

Click all the OKs until out of DUN

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NETWORK SETTINGS [1]       All Users

Make sure you have installed Microsoft's Client for Networks (or Microsoft Family Logon) and your Password will be remembered! (caution: Client is NOT used for a Internet connection and does use a little of your precious resources).

Go to Start • Settings • Control Panel • Network • Configuration

Windows Logon should show in Primary Network Logon:

Select Dial-Up Adapter • Properties • Advanced tab

Select "No" for Enable Point to Point IP (DUN13, Win98+, Win95b/c) - it accepts dial-in calls
Select "Small" or "Automatic" for IP Package Size (DUN13, Win98+, Win95b/c)
Select "No" for Record a log (unless you are troubleshooting a problem)
Select "No" for Use IPX header compression (most users find OFF is best)

Bindings tab.   This will probable show TCP/IP - let it be

Driver Type tab.   Will show Enhanced mode (32 bit and 16 bit) - let it be

Click OK

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NETWORK SETTINGS [2]

Select TCP/IP and click Properties

In IP Address:
  X Enable Obtain an IP Address Automatically (or ask your ISP)

In Wins Configuration:
  X Enable Disable Wins Resolution

In DNS Configuration:
  X Enable Disable DNS
You can normally leave these alone: Gateway, Bindings, Advanced

Click OK

Select Dial-Up Adapter • Properties and check that these are correct:
  X Enabled Enhanced mode(... in Driver Type
  X Enabled TCP/IP in Bindings

Select Advanced
  X Enabled Use IPX header compression (enabled is usually best | try Disable for games)

You do not need Record a log file (unless troubleshooting)

Click the OKs, and Reboot

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NETWORK SETTINGS [3]

Remember if you are using DUN 1.3 then:
(Win98, Win98SE, WinME, Win95b/c and DUN13 upgrade)

Select NO for Enable Point To Point IP (unless accept dial-in calls via your modem).

Select Small or Automatic for IP Packet Size'

Note:
The Packet Size is of vital importance to your downloads and is allocated its own Page (read MTU Fault Fix and DUN12 DUN13 Winsock2 in Modems).

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Please remember that you alone are responsible for the consequences of any changes you make to your computer hardware or software.

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