TNT, the hostmode terminal program needs a TNC with TheFirmware connected on a serial interface. There are some applications, where other configurations are needed: - The TNC or PR-controller software is not compatible to TheFirmware and its hostmode, but does support KISS mode - The interface is not on a HF-frequency, but a TCP/IP-based network (local net or internet) - TNT together with DPBox shall be used directly connected to a digipeater using KISS mode (hopefully with CRC) as interface To handle these applications, TFKISS was written. It is in fact a port of the original TheFirmware by NORD><LINK, written for TNC2-hardware. The low level interfaces were changed and adapted to Linux. On the radio side a KISS- and an AXIP-interface take the place of the HDLC/modem interface. The host connection is changed to a direct console interface (for terminal mode) and a socket interface (for TNT).