I realize this is not exactly what you are looking for, but another option is an RS-232 WIFI modem. Below are eBay links for four ready-made products, plus a link describing how to DIY with a Raspberry Pi. All of these options are powered by a USB cable. I am guessing that a system with a Pentium 3 processor will have a USB port. The DIY option looks promising to me because i could run SSH on the Raspberry PI, effectively offloading the crypto from the DOS CPU.
ArcaneByte RS232 WiFi Wireless Modem for Vintage Computers DB25 https://www.ebay.com/itm/203949086189 Simple Wifi RS232 Modem v2 DB25 https://www.ebay.com/itm/265519698197 WiFi Serial Modem for Retro Vintage computer Zimodem DB9 https://www.ebay.com/itm/204292941579 WiRSa v2 WiFi Wireless RS232 Serial Modem Adapter and SD card reader DB9 https://www.ebay.com/itm/175299622202 DIY internet access from a vintage computer using Raspberry Pi https://magpi.raspberrypi.com/articles/add-internet-access-to-a-vintage-computer-using-raspberry-pi Another option is dual-booting. I have a Pentium 3 laptop with FreeDOS installed, but i also carry around a Puppy Linux live CD just in case. Puppy Linux has drivers for the laptop's built-in WIFI and i can use the live CD to do a quick download and save it to disk. Just for fun, nothing serious. -Ben _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
