TCP/IP Testing help, Round 2

Michael B. Brutman mbbrutman-cctalk at brutman.com
Mon Jan 1 08:26:00 CST 2007


Sean Conner wrote:
>   Well, I tested the nine simultaneous connections and yes, it seems to
> work, although pressing ^C causes whatever program is listening on the other
> end of the TCP connection to stop responding to commands.

I think that's a telnet feature - it probably sent an 'interrupt' 
command, and the other side is not a real telnet server so it doesn't 
respond in the proper way.

> 
>> Here is a picture of the machine you are connecting to, complete with 
>> the Western Digital 8003 Ethernet card grafted onto the side:
>>
>> http://brutman.com/PCjr_WD_small.jpg
> 
>   Very neat.  How did you do that to a PCjr?  Some sort of hacked up ISA bus
> or something?

ISA bus to PCjr bus adapter :-)

>> And lastly, if you remember, type in your OS and machine type as a 
>> command.  It will complain about it being an invalid command, but I'll 
>> see it in the log and I'll have a better idea of what I'm testing against.
> 
> sockets
> 
> 9 sockets are active, 0 more are available
> Ip Address and Port    MSS   State            Started
> 66.252.226.50:61108    1432  ESTABLISHED      Mon Jan 01 02:13:50 2007
> 192.168.2.1:3018       1460  ESTABLISHED      Mon Jan 01 02:13:50 2007
> 66.252.226.50:61097    1432  ESTABLISHED      Mon Jan 01 02:13:50 2007
> 65.11.56.196:42377     1452  ESTABLISHED      Mon Jan 01 02:13:50 2007
> 66.252.226.50:61111    1432  ESTABLISHED      Mon Jan 01 02:13:50 2007
> 66.252.227.139:52611   1460  ESTABLISHED      Mon Jan 01 02:13:50 2007
> 66.165.166.190:49217   1460  ESTABLISHED      Mon Jan 01 02:13:50 2007
> 64.124.179.116:36491   1460  ESTABLISHED      Mon Jan 01 02:13:50 2007
> 204.29.162.199:38999   1460  ESTABLISHED      Mon Jan 01 02:13:50 2007
> 
> These (with the exception of the 192.168.2.1 address) are me.  All Linux
> systems (2.0 to 2.6) with one Mac mini thrown in.  
> 
>   -spc (Oh, and your system clock is a bit off 8-)
> 
> 

It wasn't too long after this that it died, so I'm going to test 9 
simultaneous connections here.


Mike



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