Re: telnetd mystery ....

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On 01/30/2013 10:00 AM, jdow wrote:
> On 2013/01/29 17:49, Ed Greshko wrote:
>> On 01/30/2013 09:37 AM, jdow wrote:
>>>
>>> On 2013/01/29 06:23, Ed Greshko wrote:
>>>> On 01/29/2013 10:19 PM, Matthew Miller wrote:
>>>>> On Tue, Jan 29, 2013 at 11:46:58AM +0800, Ed Greshko wrote:
>>>>>> First....  No need to bring up the ssh v.s. telnet stuff..... Has
>>>>>> anyone configured telnetd for use on F18?  Running 64 bit....but
>>>>>> this shouldn't make a difference.  Anyway, I did the normal
>>>>>> procedure.....
>>>>> I just did, and I didn't add -D, but I did change "disabled = yes" to
>>>>> "no" in the telnet xinetd config. And it just worked.
>>>>>
>>>>
>>>> Thanks for testing.
>>>>
>>>> That is what I did too....  And it fails as described.   I'm stumped.
>>>>
>>> SELinux getting in the way in one of the two cases?
>>>
>>
>> No, I eliminated that early on....  Another manifestation of the problem is
>> "garbled" output....
>>
>> Connected to f18x. Escape character is '^]'. Fedora release 18 (Spherical
>> Cow) Kernel 3.7.4-204.fc18.x86_64 on an x86_64 (3) 18x login: assword: ast
>> login: Wed Jan 30 08:27:30 on :0 ]0;egreshko@f18x:~[?1034hegreshko@f18x ~]$
>> [0mDesktop  Documents  Downloads  Music  Pictures  Public  Templates  Videos
>
> Erm, you said it's a very old machine. I get the impression it is using
> telnet to get to the Linux machine. What you're seeing looks for all the
> world like what people used to see on RS232 terminals when flow control
> was disabled. Is flow control disabled somewhere in your network path
> between the machines? If it is a very slow machine may get hit with data
> faster than it can parse it.
>

The justification for needing a working telnet server is that the client side is old. 

The problem was discovered and occurs on F18 itself with "telnet localhost".



-- 
Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning. -- Rick Cook, The Wizardry Compiled
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