No output from DOS commands via telnet using xinetd

Brian.Kelly@empireblue.com Brian.Kelly@empireblue.com
Mon Aug 18 20:23:00 GMT 2003


I've noticed that running most DOS commands via telnet using *xinetd*
produced no output. Runing DOS commands via telnet using *inetd* works as
expected and DOES produce the expected output. For instance, in telnet via
inetd, typing:
 net help
produces the following output:
-------------------------------------------------------------------------------------------------------------
bmk1n0@STP**********FTP2 ~
 - net help
The syntax of this command is:
NET HELP command
 -or-
NET command /HELP
 Commands available are:
 NET ACCOUNTS NET HELP NET SHARE
 NET COMPUTER NET HELPMSG NET START
 NET CONFIG NET LOCALGROUP NET STATISTICS
 NET CONFIG SERVER NET NAME NET STOP
 NET CONFIG WORKSTATION NET PAUSE NET TIME
 NET CONTINUE NET PRINT NET USE
 NET FILE NET SEND NET USER
 NET GROUP NET SESSION NET VIEW
 NET HELP SERVICES lists the network services you can start.
 NET HELP SYNTAX explains how to read NET HELP syntax lines.
 NET HELP command | MORE displays Help one screen at a time.
bmk1n0@STP**********FTP2 ~
 -
---------------------------------------------------------------------------------------------------------------
In telnet via xinetd, their is NO output from the same command:
-------------------------------------------------------
bmk1n0@STP**********FTP2 ~
 - net help
bmk1n0@STP**********FTP2 ~
 -
-------------------------------------------------------
Also, if you run a DOS shell via telnet through inetd, you can see the output
of unix/cygwin commands:
____________________________________________________________________________________
bmk1n0@STP**********FTP2 ~
 - cmd
Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.
e:\temp>pwd
pwd
/cygdrive/e/temp
e:\temp>exit
exit
bmk1n0@STP**********FTP2 ~
____________________________________________________________________________________
Output of same pwd command when run via telnet through xinetd:
____________________________________
bmk1n0@STP**********FTP2 ~
 - cmd
Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.
e:\temp>pwd
pwd
e:\temp>exit
exit
bmk1n0@STP**********FTP2 ~
 -
_____________________________________
Is this a known issue? Is this a bug? or is there some configuration thing I
have to do??
Brian Kelly
"WellChoice, Inc." made the following
 annotations on 08/18/2003 03:08:03 PM
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