NAT32 22.19.2 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. Commonly, this program's installer has the following filename: NAT32.exe. NAT32 is categorized as Internet & Network Tools.
The following versions: 2.2, 2.1 and 2.0 are the most frequently downloaded ones by the program users. The actual developer of the free software is NAT Software. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
The NAT32 Windows Software Router now supports a Safe Mode (also known as the Host Transfer Mode) that reliably protects the Windows TCP/IP stack from all unsolicited Internet traffic. Tests done from the ShieldsUp site now report the NAT32 machine as being 100% invisible on the Internet.
You may want to check out more software, such as COMODO Firewall Pro, SecureCRT or NetCafe, which might be related to NAT32.