[jeff_vader]

Related - there's also ESP8266 based TheOldNet wifi modem[1] in case you want TCP/IP over wifi networking in your MS-DOS machine (or possibly others which have support for SLIP - Serial Line Internet Protocol).

[1]: https://github.com/TheOldNet/theoldnet-wifi-firmware-binarie...

[myth_drannon]

You can buy it for 35$ on https://www.tindie.com/products/theoldnet/rs232-serial-wifi-...