Free ishell software for mac

ISH allows users to connect to a remote host and to open a shell using only ICMP to send and receive data. ICMP Shell is developed in C for the UNIX environment.
The ISHELL server is run in daemon mode on the remote server. When the server recieves a request from the client it will strip the header and look at the ID field, if it matches the server then it will pipe the data to "/bin/sh". It will then read the results from the pipe and send them back to the client and the client prints the results to stdout.

Enhancements:
- Fixed a compiling problem that was encountered on some Solaris machines
- Changed AF_LOCAL to AF_UNIX in ish_open functions
- Rearranged headers in ishell.h
- Changed u_intXX_t variables to uintXX_t