telnetd mystery ....

[jdow]

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 at f18x:~[?1034hegreshko at f18x ~]$
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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.

{^_^}   Joanne
         (If I'm right old age and guile once again defeats youth and
         enthusiasm. {^_-} If not - "Never mind.")