Co robi TELNETD użycie. Konsola connect to the Telnet port (port 23 by default). telnetd allocates.

Czy przydatne?

Polecenie telnetd

Wykonanie, użycie: TCP/IP command. Telnet protocol server. telnetd is invoked by the Internet server for requests to connect to the Telnet port (port 23 by default). telnetd allocates a pseudo-terminal device for a client, thereby creating a login process that has the slave side of the pseudo-terminal serving as stdin, stdout, and stderr. telnetd manipulates the master side of the pseudo-terminal by implementing the Telnet protocol and by passing characters between the remote client and the login process.

The Telnet protocol is often criticized because it uses no encryption and makes it easy for snoopers to pick up user passwords. Most sites now use ssh instead

Opcje wykonania telnetd w konsoli

-a type

When compiled with authentication support, this option sets the authentication type. Accepted values are:

debug

Debug authentication code.

 none

No authentication required, but accept it if offered. Use login for any further verification needed to access an account.

 off

Disable authentication.

 user

Allow only authenticated remote users with permission to access their accounts without giving a password.

 valid

Allow only authenticated remote users. Use login for any additional verification needed to access an account.
-debug [port]

Start telnetd manually instead of through inetd. port may be specified as an alternate TCP port number on which to run telnetd.

 -D modifier(s)

Debugging mode. This allows telnet to print out debugging information to the connection, enabling the user to see what telnet is doing. Several modifiers are available for the debugging mode:

netdata

Display data stream received by telnetd.

 options

Print information about the negotiation of the Telnet options.

 ptydata

Display data written to the pseudo-terminal device.

 report

Print options information, as well as some additional information about what processing is going on.
-edebug

When compiled with support for encryption, enable encryption debugging code.

 -h

Don't print host-specific information until after login is complete.

 -U

Refuse connections from IP addresses with no reverse DNS information.

 -n

Disable checking for lost connections with TCP keep-alives.

 -X type

Disable authentication type.

Przykłady telnetd działanie w Słownik polecenie T

Przykład TELNETD użycie :
Jak użyć Provide information (frequently refreshed) about the most CPU-intensive processes currently running. You do not need to include a - before options. See ps for explanations of the field descriptors co znaczy.
Przykład TELNETD użycie :
Jak użyć A null command that returns a successful (0) exit status. See also false krzyżówka.
Przykład TELNETD użycie :
Jak użyć System administration command. Signal init to change the system's runlevel. telinit is actually just a link to init , the ancestor of all processes co to jest.
Przykład TELNETD użycie :
Jak użyć terminal. The terminal to be initialized is whichever is found first from the value of terminal , the value of the TERM environment variable, or the default terminal type. See also the reset command słownik.
Przykład TELNETD użycie :
Jak użyć See groff czym jest.