diff options
Diffstat (limited to 'crypto/telnet/telnetd/telnetd.8')
| -rw-r--r-- | crypto/telnet/telnetd/telnetd.8 | 141 |
1 files changed, 70 insertions, 71 deletions
diff --git a/crypto/telnet/telnetd/telnetd.8 b/crypto/telnet/telnetd/telnetd.8 index e77443e..e03f290 100644 --- a/crypto/telnet/telnetd/telnetd.8 +++ b/crypto/telnet/telnetd/telnetd.8 @@ -48,13 +48,13 @@ protocol server .Op Fl X Ar authtype .Op Fl a Ar authmode .Op Fl edebug -.Op Fl P Ar loginprog +.Op Fl p Ar loginprog .Op Fl r Ns Ar lowpty-highpty .Op Fl u Ar len .Op Fl debug Op Ar port .Sh DESCRIPTION The -.Nm telnetd +.Nm command is a server which supports the .Tn DARPA standard @@ -68,45 +68,45 @@ for requests to connect to the port as indicated by the .Pa /etc/services file (see -.Xr services 5 ) . +.Xr services 5 ). The .Fl debug option may be used to start up -.Nm telnetd +.Nm manually, instead of through .Xr inetd 8 . If started up this way, .Ar port may be specified to run -.Nm telnetd +.Nm on an alternate .Tn TCP port number. .Pp The -.Nm telnetd +.Nm command accepts the following options: -.Bl -tag -width "-a authmode" +.Bl -tag -width indent .It Fl a Ar authmode This option may be used for specifying what mode should be used for authentication. Note that this option is only useful if -.Nm telnetd +.Nm has been compiled with support for the .Dv AUTHENTICATION option. There are several valid values for -.Ar authmode: +.Ar authmode : .Bl -tag -width debug -.It debug -Turns on authentication debugging code. -.It user +.It Cm debug +Turn on authentication debugging code. +.It Cm user Only allow connections when the remote user can provide valid authentication information to identify the remote user, and is allowed access to the specified account without providing a password. -.It valid +.It Cm valid Only allow connections when the remote user can provide valid authentication information to identify the remote user. @@ -115,14 +115,14 @@ The command will provide any additional user verification needed if the remote user is not allowed automatic access to the specified account. -.It other +.It Cm other Only allow connections that supply some authentication information. This option is currently not supported by any of the existing authentication mechanisms, and is thus the same as specifying .Fl a .Cm valid . -.It none +.It Cm none This is the default state. Authentication information is not required. If no or insufficient authentication information @@ -130,15 +130,15 @@ is provided, then the .Xr login 1 program will provide the necessary user verification. -.It off -This disables the authentication code. +.It Cm off +Disable the authentication code. All user verification will happen through the .Xr login 1 program. .El .It Fl B -Specifies bftp server mode. In this mode, -.Nm telnetd +Specify bftp server mode. In this mode, +.Nm causes login to start a .Xr bftp 1 session rather than the user's @@ -150,51 +150,51 @@ port. .It Fl D Ar debugmode This option may be used for debugging purposes. This allows -.Nm telnetd +.Nm to print out debugging information to the connection, allowing the user to see what -.Nm telnetd +.Nm is doing. There are several possible values for -.Ar debugmode: +.Ar debugmode : .Bl -tag -width exercise .It Cm options -Prints information about the negotiation of +Print information about the negotiation of .Tn TELNET options. .It Cm report -Prints the +Print the .Cm options information, plus some additional information about what processing is going on. .It Cm netdata -Displays the data stream received by -.Nm telnetd. +Display the data stream received by +.Nm Ns . .It Cm ptydata -Displays data written to the pty. +Display data written to the pty. .It Cm exercise Has not been implemented yet. .El .It Fl debug -Enables debugging on each socket created by -.Nm telnetd +Enable debugging on each socket created by +.Nm (see .Dv SO_DEBUG in .Xr socket 2 ) . .It Fl edebug If -.Nm telnetd +.Nm has been compiled with support for data encryption, then the .Fl edebug option may be used to enable encryption debugging code. -.It Fl P Ar loginprog -Specifies an alternate +.It Fl p Ar loginprog +Specify an alternate .Xr login 1 command to run to complete the login. The alternate command must understand the same command arguments as the standard login. .It Fl h -Disables the printing of host-specific information before +Disable the printing of host-specific information before login has been completed. .It Fl I Ar initid This option is only applicable to @@ -210,7 +210,7 @@ is .Dv fe. .It Fl k This option is only useful if -.Nm telnetd +.Nm has been compiled with both linemode and kludge linemode support. If the .Fl k @@ -218,12 +218,12 @@ option is specified, then if the remote client does not support the .Dv LINEMODE option, then -.Nm telnetd +.Nm will operate in character at a time mode. It will still support kludge linemode, but will only go into kludge linemode if the remote client requests it. -(This is done by by the client sending +(This is done by the client sending .Dv DONT SUPPRESS-GO-AHEAD and .Dv DONT ECHO . ) @@ -237,7 +237,7 @@ in response to a .Dv DO TIMING-MARK) for kludge linemode support. .It Fl l -Specifies line mode. Tries to force clients to use line- +Specify line mode. Try to force clients to use line- at-a-time mode. If the .Dv LINEMODE @@ -247,7 +247,7 @@ into kludge linemode. Disable .Dv TCP keep-alives. Normally -.Nm telnetd +.Nm enables the .Tn TCP keep-alive mechanism to probe connections that @@ -257,7 +257,7 @@ from machines that have crashed or can no longer be reached may be cleaned up. .It Fl r Ar lowpty-highpty This option is only enabled when -.Nm telnetd +.Nm is compiled for .Dv UNICOS. It specifies an inclusive range of pseudo-terminal devices to @@ -273,14 +273,14 @@ may be omitted to allow changing either end of the search range. If .Ar lowpty is omitted, the - character is still required so that -.Nm telnetd +.Nm can differentiate .Ar highpty from .Ar lowpty . .It Fl s This option is only enabled if -.Nm telnetd +.Nm is compiled with support for .Tn SecurID cards. @@ -317,7 +317,7 @@ file. .ne 1i .It Fl U This option causes -.Nm telnetd +.Nm to refuse connections from addresses that cannot be mapped back into a symbolic name via the @@ -325,14 +325,14 @@ via the routine. .It Fl X Ar authtype This option is only valid if -.Nm telnetd +.Nm has been built with support for the authentication option. It disables the use of .Ar authtype authentication, and can be used to temporarily disable a specific authentication type without having to recompile -.Nm telnetd . +.Nm Ns . .El .Pp .Nm Telnetd @@ -354,7 +354,7 @@ between the remote client and the login process. When a .Tn TELNET session is started up, -.Nm telnetd +.Nm sends .Tn TELNET options to the client side indicating @@ -403,25 +403,25 @@ current state of terminal echoing. When terminal echo is not desired, a .Dv WILL ECHO is sent to indicate that -.Tn telnetd +.Nm will take care of echoing any data that needs to be echoed to the terminal, and then nothing is echoed. When terminal echo is desired, a .Dv WONT ECHO is sent to indicate that -.Tn telnetd +.Nm will not be doing any terminal echoing, so the client should do any terminal echoing that is needed. .It "WILL BINARY" -Indicates that the client is willing to send a +Indicate that the client is willing to send a 8 bits of data, rather than the normal 7 bits of the Network Virtual Terminal. .It "WILL SGA" -Indicates that it will not be sending +Indicate that it will not be sending .Dv IAC GA, go ahead, commands. .It "WILL STATUS" -Indicates a willingness to send the client, upon +Indicate a willingness to send the client, upon request, of the current status of all .Tn TELNET options. @@ -442,7 +442,7 @@ is sent in response, and the session is shut down. .It "WILL ENCRYPT" Only sent if -.Nm telnetd +.Nm is compiled with support for data encryption, and indicates a willingness to decrypt the data stream. @@ -455,7 +455,7 @@ options: .Bl -tag -width "DO AUTHENTICATION" .It "DO BINARY" Sent to indicate that -.Tn telnetd +.Nm is willing to receive an 8 bit data stream. .It "DO LFLOW" Requests that the client handle flow control @@ -471,38 +471,38 @@ is received, a .Dv DONT ECHO will be sent in response. .It "DO TERMINAL-TYPE" -Indicates a desire to be able to request the +Indicate a desire to be able to request the name of the type of terminal that is attached to the client side of the connection. .It "DO SGA" -Indicates that it does not need to receive +Indicate that it does not need to receive .Dv IAC GA, the go ahead command. .It "DO NAWS" Requests that the client inform the server when the window (display) size changes. .It "DO TERMINAL-SPEED" -Indicates a desire to be able to request information +Indicate a desire to be able to request information about the speed of the serial line to which the client is attached. .It "DO XDISPLOC" -Indicates a desire to be able to request the name -of the X windows display that is associated with +Indicate a desire to be able to request the name +of the X Window System display that is associated with the telnet client. .It "DO NEW-ENVIRON" -Indicates a desire to be able to request environment +Indicate a desire to be able to request environment variable information, as described in RFC 1572. .It "DO ENVIRON" -Indicates a desire to be able to request environment +Indicate a desire to be able to request environment variable information, as described in RFC 1408. .It "DO LINEMODE" Only sent if -.Nm telnetd +.Nm is compiled with support for linemode, and requests that the client do line by line processing. .It "DO TIMING-MARK" Only sent if -.Nm telnetd +.Nm is compiled with support for both linemode and kludge linemode, and the client responded with .Dv WONT LINEMODE. @@ -515,28 +515,27 @@ Note that the option can be used to disable this. .It "DO AUTHENTICATION" Only sent if -.Nm telnetd +.Nm is compiled with support for authentication, and indicates a willingness to receive authentication information for automatic login. .It "DO ENCRYPT" Only sent if -.Nm telnetd +.Nm is compiled with support for data encryption, and indicates a willingness to decrypt the data stream. .Sh ENVIRONMENT .Sh FILES -.Pa /etc/services -.br -.Pa /etc/inittab +.Bl -tag -width /usr/ucb/bftp -compact +.It Pa /etc/services +.It Pa /etc/inittab (UNICOS systems only) -.br -.Pa /etc/iptos +.It Pa /etc/iptos (if supported) -.br -.Pa /usr/ucb/bftp +.It Pa /usr/ucb/bftp (if supported) +.El .Sh "SEE ALSO" .Xr bftp 1 , .Xr login 1 , @@ -594,7 +593,7 @@ commands are only partially implemented. .Pp Because of bugs in the original 4.2 BSD .Xr telnet 1 , -.Nm telnetd +.Nm performs some dubious protocol exchanges to try to discover if the remote client is, in fact, a 4.2 BSD .Xr telnet 1 . |
