Editing Netcat (section)

==Features==
The original netcat's features include:<ref>{{Cite book |last=Vacca |first=John R. |title=Guide to Wireless Network Security |publisher=[[Springer Publishing]] |year=2006 |isbn=978-0387954257 |pages=266 |language=en}}</ref>

* Outbound or inbound connections, TCP or UDP, to or from any ports
* Full [[Reverse DNS lookup|DNS forward/reverse checking]], with appropriate warnings
* Ability to use any local source port
* Ability to use any locally configured network source address
* Built-in port-scanning capabilities, with randomization
* Built-in loose source-routing capability
* Can read command line arguments from standard input
* Slow-send mode, one line every N seconds
* [[Hex dump]] of transmitted and received data
* Optional ability to let another program service establish connections
* Optional [[telnet]]-options responder

Rewrites like GNU's and OpenBSD's support additional features. For example, OpenBSD's nc supports [[Transport Layer Security|TLS]], and GNU netcat natively supports a [[Tunneling protocol|tunneling]] mode supporting UDP and TCP (optionally allowing one to be tunneled over the other) in a single command,<ref>{{cite web
| url = http://netcat.sourceforge.net/
| title = The GNU Netcat project
| author = Giovanni Giacobbi
| date = 2006-11-01
| access-date = 2020-03-22}}</ref> where other versions may require piping data from one netcat instance to another.