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A switch does not encrypt your traffic. It routes it differently. For example, if a hub gets a packet of data from a source, it repeats (transmits) this to all it's ports. So all the traffic going throug a hub is sent to all computers linked to the hub. Also when 2 or more computer try to send stuff at the same time, collisions happen and some fancy bit of software has to deal with it. Anyhow, a switch works in a completely different way. It's kinda like connecting multiple computers with crossover cables and the box (switch) just connects between connections. So if computer A sends a packet to computer B then the switch connects those 2 and computer C can't simply listen to their traffic. Switches do this magic using a table of each destination address and port. Hope this explains it a bit. Jaan On Thu, Oct 28, 2010 at 12:13 PM, Paul Sutton <zleap@xxxxxxxxx> wrote: > On 28/10/10 10:55, Jaan Janesmae wrote: >> Actually, with wpa and wep all your communication is crypted. I mean >> It is much harder to listen to your traffic. On a open wifi box there >> is none of that. Basically the same thing when using hubs instead on >> switches for your local lan. >> >> Regards, >> Jaan > > > So this suggests that a switch also encrypts data on the network between > computers attached to it > > or don't i understand something here? > > This is something that would be good to discuss at a lug meet, > > The ironic thing is when I first enquired at paignton library I > mentioned things like talks on internet safety (which the above would > come under) as one of the things we would like to do (as a public > service sort of thing), it is the sort of thing they want to encourage. > > well encourage by forcing people to have computers pat tested, then > take out liability insurance, and for that, we are not even going to > charge the public for doing the talks. > > Paul > > -- > The Mailing List for the Devon & Cornwall LUG > http://mailman.dclug.org.uk/listinfo/list > FAQ: http://www.dcglug.org.uk/listfaq > -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq