Basically, you need three components:

Installing the first two together with the base operating system on a blank system is explained in the Warp manual. If Warp has already been installed, but you now want to install the networking support, use the “Selective Install for Networking” object in the “System Setup” folder.

Adding the “NetBIOS over TCP/IP” driver is not described in the manual and just barely in the online documentation. Start MPTS.EXE, click on OK, click on Configure LAPS, and click on IBM OS/2 NETBIOS OVER TCP/IP in Protocols. This line is then moved to Current Configuration. Select that line, click on Change number, and increase it from 0 to 1. Save this configuration.

If the Samba server is not on your local subnet, you can optionally add IP names and addresses of these servers to the Names List or specify a WINS server (NetBIOS Nameserver in IBM and RFC terminology). For Warp Connect, you may need to download an update for IBM Peer to bring it on the same level as Warp 4. See the IBM OS/2 Warp Web page

This sections deals with configuring OS/2 Warp 3 (not Connect), OS/2 1.2, 1.3 or 2.x.

You can use the free Microsoft LAN Manager 2.2c Client for OS/2 that is available from ftp://ftp.microsoft.com/BusSys/Clients/LANMAN.OS2/. In a nutshell, edit the file \OS2VER in the root directory of the OS/2 boot partition and add the lines:

		20=setup.exe
		20=netwksta.sys
		20=netvdd.sys
		

before you install the client. Also, do not use the included NE2000 driver because it is buggy. Try the NE2000 or NS2000 driver from ftp://ftp.cdrom.com/pub/os2/network/ndis/ instead.

Create a share called [PRINTDRV] that is world-readable. Copy your OS/2 driver files there. The .EA_ files must still be separate, so you will need to use the original install files and not copy an installed driver from an OS/2 system.

Install the NT driver first for that printer. Then, add to your smb.conf a parameter, os2 driver map. Next, in the file specified by filename, map the name of the NT driver name to the OS/2 driver name as follows:

nt driver name = os2 driver name.device name, e.g.,

HP LaserJet 5L = LASERJET.HP LaserJet 5L

You can have multiple drivers mapped in this file.

If you only specify the OS/2 driver name, and not the device name, the first attempt to download the driver will actually download the files, but the OS/2 client will tell you the driver is not available. On the second attempt, it will work. This is fixed simply by adding the device name to the mapping, after which it will work on the first attempt.

Use the latest TCP/IP stack from Microsoft if you use Windows for Workgroups. The early TCP/IP stacks had lots of bugs.

Microsoft has released an incremental upgrade to its TCP/IP 32-bit VxD drivers. The latest release can be found at ftp.microsoft.com, located in /Softlib/MSLFILES/TCP32B.EXE. There is an update.txt file there that describes the problems that were fixed. New files include WINSOCK.DLL, TELNET.EXE, WSOCK.386, VNBT.386, WSTCP.386, TRACERT.EXE, NETSTAT.EXE, and NBTSTAT.EXE.

More information about this patch is available in Knowledge Base article 99891.

Windows for Workgroups does a lousy job with passwords. When you change passwords on either the UNIX box or the PC, the safest thing to do is delete the .pwl files in the Windows directory. The PC will complain about not finding the files, but will soon get over it, allowing you to enter the new password.

If you do not do this, you may find that Windows for Workgroups remembers and uses the old password, even if you told it a new one.

Often Windows for Workgroups will totally ignore a password you give it in a dialog box.

There is a program call admincfg.exe on the last disk (disk 8) of the WFW 3.11 disk set. To install it, type EXPAND A:\ADMINCFG.EX_ C:\WINDOWS\ADMINCFG.EXE. Then add an icon for it via the Program Manager New menu. This program allows you to control how WFW handles passwords, Disable Password Caching and so on, for use with security = user.

Windows for Workgroups uppercases the password before sending it to the server. UNIX passwords can be case-sensitive though. Check the smb.conf information on password level to specify what characters Samba should try to uppercase when checking.

To support print queue reporting, you may find that you have to use TCP/IP as the default protocol under Windows for Workgroups. For some reason, if you leave NetBEUI as the default, it may break the print queue reporting on some systems. It is presumably a Windows for Workgroups bug.

Note that some people have found that setting DefaultRcvWindow in the [MSTCP] section of the SYSTEM.INI file under Windows for Workgroups to 3072 gives a big improvement.

My own experience with DefaultRcvWindow is that I get a much better performance with a large value (16384 or larger). Other people have reported that anything over 3072 slows things down enormously. One person even reported a speed drop of a factor of 30 when he went from 3072 to 8192.

Configure the Windows 95 TCP/IP registry settings to give better performance. I use a program called MTUSPEED.exe that I got off the Internet. There are various other utilities of this type freely available.