g0tmi1k@kali-dev:~$ cryptcat -h
[v1.10]
connect to somewhere:   nc [-options] hostname port[s] [ports] ... 
listen for inbound: nc -l -p port [-options] [hostname] [port]
options:
    -g gateway      source-routing hop point[s], up to 8
    -G num          source-routing pointer: 4, 8, 12, ...
    -h          this cruft
    -i secs         delay interval for lines sent, ports scanned
    -l          listen mode, for inbound connects
    -n          numeric-only IP addresses, no DNS
    -o file         hex dump of traffic
    -p port         local port number
    -r          randomize local and remote ports
    -s addr         local source address
    -u          UDP mode
    -v          verbose [use twice to be more verbose]
    -w secs         timeout for connects and final net reads
    -z          zero-I/O mode [used for scanning]
port numbers can be individual or ranges: lo-hi [inclusive]
g0tmi1k@kali-dev:~$ 

so it says about using nc and not cryptcat.