This article contains instructions, advice, or how-to content. The purpose of .. . -,-(Xr-3d.exe/), . . is to present facts, not to train.
Its list of features includes port scanning, transferring files, and port listening, and it can be used as a backdoor. Featured tunneling mode which permits user-defined tunneling, e. Rewrites like GNU’s and OpenBSD’s support additional features. For example, OpenBSD’s nc supports TLS. This should work fine in a LAN, but may potentially fail with any kind of firewall between.
In some versions of netcat like netcat-traditional in Debian 8. 6, you need to specify -p before the port number. The -z argument is useless . If it is not open, you will get an error such as “Connection refused”. On some machines, IPv6 may be the default IP version to use by netcat. Thus, the host specified by the hostname is contacted using IPv6, and the user might not know about this. Ports may appear closed in the test, even though they would be open when using IPv4.