Welcome to GPvNO

Home of Inet/Winet Terminal Emulation

How can we help you to access your mainframe or business server and print from them?


Winet (Terminals, Printing and FTP), IRMA (Remote Management and file distribution), RINET (IPv4/IPv6, TCP, UDP, terminals, printing, FTP, HTTP for 16 and 32 bit embedded systems) […]


You may download any of our products and use it for a trial period of 3 to 6 months to confirm that it works in your environment and to ensure you are suitably impressed before you buy. […]


Formatted printing from legacy systems, electronic distribution of reports, GUI and client/server capabilities onto legacy systems, embedded systems with advanced communications capabilities […]

About GPvNO

GP van Niekerk Ondernemings was established in 1986 as a Close Corporation developing software in the data communications field. One of the first products to be developed was a serial terminal […]


Winet 6.49 released

Update notes

1. The Winet install program has been updated to make a clear distinction between
Complete and Compact setup. Note that certain modules e.g. Inet3270Web server can
only be installed by using the Custom setup.

2. When a Custom Install (not to be confused with the Custome Setup above) is done
by having a CUSTOM folder in the same location as the install file, the current folder
will be in a temporary location. To set the current folder to the default location of
C:\Winet\custom, use the following line in CUSTOM.BAT:
cd /d %1

3. The Microsoft “Print to PDF” driver is faulty which used to crash Winet when using
this printer as the default printer. Winet now handles the problem.

4. The model number for legacy 3270 terminals (non-TN3270E) has been properly implemented.

5. The model number for 3270 terminals is now properly reported in a Partition Query command.

6. Cursor blinking has been improved. Previously a slow setting for the blink rate in
Windows could lead to the cursor not blinking at all.

Winet 6.48 released

Update notes.

1. Winet contains useful facilities that can lead to passwords being revealed. They are Tracing, Macros and Scripts. All of these can be protected by using registry access policies that disallow unauthorised users from misusing it.
Certain users don’t want to implement registry access policies and the following changes have been made to accommodate them:

1.1. The network traffic portion of traces are now encrypted using strong encryption with a key protected by a secret password. Only GPvNO can decrypt it for support purposes. If a user wants to view it, the trace file needs to be sent to GPvNO who will decrypt and send it back to the user after verifying the authorisation level of the user. If the user does not want GPvNO to have access to passwords, the trace
must only be started after a password has been entered.

1.2. The macro recording facility can only be used if the user license (Dontwipe.me!) allows it.

1.3. The NotifyKeyboard property is set to “disabled” when starting and can only be set to “enabled” when licensed as in 2. This ensures that the OnKeyboard event can’t be used.

1.4. The GetString method can only be used if licensed as in 2.

2. The update code to update the license file (Dontwipe.me!) can also change the number of users.

3. A number of possible vulnerabilities has been eliminated.

4. Certain malfunctioning anti-virus programs could lead to a connection being reset the first time that Winet starts up with auto connect. Winet solves this problem by re-trying the connection several times before giving an error.

5. Special (diacritical) characters can be entered by typing a key to display the Special Character dialog at a position relevant to the key e.g. typing “Ctrl e” shows all the diacritical forms of “e” like ë, é, è, ê, etc. allowing you to select the correct one. The “Ctrl e” key must be set up in the keyboard mapping dialog by selecting “Special key dialog*” as the key and adding the “e” in the Text field.

6. 3270 fixes:

6.1. If a UTF-8 file with a Byte Order Mark is uploaded using NFT the BOM is removed.
6.2. If data was received while viewing a history screen, that screen was corrupted. That has been fixed.
6.3. 3270 data stream printing is now properly implemented.

7. SSH
The SSH implementation has been updated to support more secure algorithms. This version is based on the PUTTY v 0.67 code.

Winet 6.47 released


OpenSSL 1.0.2g is provided.

Facility to update license file (Dontwipe.me!) automatically from File or Web Server.

3270: Natural File Transfer download returning wrong status.
UTS60: Proper Unicode special symbols.
All products:
Saving most recent custom printer.
Printer overprinting for bold and underline.