[Tfug] "Opening" a physical ethernet connection

[Yan]

http://www.belkin.com/us/wemo-switch can automate powering down that
switch. You could even use https://ifttt.com/ to let authorized people turn
it on and off over twitter.

- Yan


On Wed, May 1, 2013 at 7:20 PM, John Hubbard <ender8282 at yahoo.com> wrote:

> On 5/1/2013 4:33 PM, Bexley Hall wrote:
>
>> On 5/1/2013 4:17 PM, Bender wrote:
>>
>>> Why don't you really tell us what you are trying to do?
>>>
>>
>> Ideally, I want to be able to "unplug" a "physical ethernet
>> connection" (i.e., a *cable*).  This prevents the service(s)
>> available on that connection from being accessed *and*
>> protects the fabric from "assault" (e.g., someone taking a
>> line cord and connecting it to the pins of the connector
>> thereby frying a port in an *expensive* switch).
>>
>
> What about routing your connection through a cheap switch[1], and power it
> via a wall switch.  Turn off the wall switch, the cheap switch looses power
> and cannot talk to the rest of the network. This only partially protects
> against your physical assault.  If someone did plug mains power into the
> RJ45, then you'd be out a $20 switch, but not your fancier many-port
> managed switch on the other side.
>
> If its vandalism that you are worried about I'd ask you to really think
> about whether someone plugging mains into an rj-45 is that likely.  What is
> the technical knowledge needed to plug mains power into RJ-45.  Does your
> average vandal have that much technical knowledge.  The only place that I'd
> worry about knowledgeable vandals is high school technology classes.
>  Realistically, if those are your opponents,  I'd give up.  Whatever you do
> I suspect you'll loose that battle.  Those guys are crafty.
>
> I'd be happy to see this discussion devolve into a discussion about how
> best to attack a 'hardened' network...  Its bound to be interesting.
>
> [1] http://www.newegg.com/Product/**ProductList.aspx?Submit=ENE&N=**
> 100010066+4093+0&**QksAutoSuggestion=&**ShowDeactivatedMark=False&**
> Configurator=&IsNodeId=1&**Subcategory=30&description=&**
> hisInDesc=&Ntk=&CFG=&**SpeTabStoreType=&**AdvancedSearch=1&srchInDesc=<http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100010066+4093+0&QksAutoSuggestion=&ShowDeactivatedMark=False&Configurator=&IsNodeId=1&Subcategory=30&description=&hisInDesc=&Ntk=&CFG=&SpeTabStoreType=&AdvancedSearch=1&srchInDesc=>
>
> --
> -john
>
> To be or not to be, that is the question
>                 2b || !2b
> (0b10)*(0b1100010) || !(0b10)*(0b1100010)
>         0b11000100 || !0b11000100
>         0b11000100 || 0b00111011
>                0b11111111
> 255, that is the answer.
>
>
>
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