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I have been looking at Ethernet over power to provide network access in another room, as this is on the electrical grid of my building what/are there any security risks with someone sniffing my data? if so are there devices that encrypt the content.

any advise on security issue would be great

Lee

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Why is PoE on the electrical grid? – Tobias Plutat Jan 26 '11 at 12:11
    
Are you confusing "PoE" and "Powerline Ethernet"? – Ignacio Vazquez-Abrams Jan 26 '11 at 12:12
    
Do you mean Power-line Ethernet? I can't imagine why PoE would be on the electricals... – Matthieu Cartier Jan 26 '11 at 12:13
    
I guess he does, because "using [...] to provide network access" is not what you do with PoE ;) – Tobias Plutat Jan 26 '11 at 12:15
    
Title modified to clarify this point – Linker3000 Jan 26 '11 at 15:15
up vote 1 down vote accepted

I think you're looking for ethernet over power lines, not PoE (power-over-ethernet which mean using a pair of wires from the ethernet cable to power the device). I'm using a pair of Devolo at home and they are working well and the traffic is encrypted.

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I just looked a bit of stuff up. You should definitely make sure that the network name the Powerline network uses is individual - some vendors have a generic network name on all of their adapters. – Tobias Plutat Jan 26 '11 at 12:19
    
Of course you should configure it (I don't remember if encryption was by default enabled or not), but it is supported. – Vlad H Jan 26 '11 at 12:21
    
sorry for the mix up I did mean ethernet over power rather than PoE, so if you can set your own names and "network" security id's and you can encrypt the traffic they are ok? – monkeylee Jan 26 '11 at 13:57
    
Yes, that should be reasonably safe. – Vlad H Jan 26 '11 at 13:59
    
Vlad you concern me with your "reasonably safe" any reason for that? – monkeylee Jan 26 '11 at 15:05

Most 'homeplug'-type powerline adaptors use 128-bit AES encryption which should be sufficient, but check the specs of any units you plan to buy before purchasing.

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