From: adam@address.invalid   
      
   unruh wrote:   
   > On 2012-08-10, Adam  wrote:   
   >> I'd better look into what to do should I get a guest with a laptop here.   
   >> Somehow sending them to the public library sounds a little rude. :-)   
   [...]   
   >> My router's set for WPA2 encryption also.  I imagine I'd have to give   
   >> the SSID and current PSK to the guest, then change the PSK once he/she   
   >> has left here.  I get signals from at least four neighbors who use Wi-Fi   
   >> (there are 100+ apartments within 0.1 miles of me), so security is   
   >> important here too.   
   >   
   > Why change the key? Do you really think your guest is going to sneak up   
   > to your apt building next week and connect from outside your apartment?   
   > Or is going to publish your psk in the local paper?   
      
   Thanks for the commonsense advice, Bill.  No, I really don't expect   
   anything like that to happen.  OTOH once the guest has left, that's out   
   of my control.  The person could accidentally send the key to someone   
   else, or the laptop could get stolen and the thief could do anything.   
      
   > Changing the key occasionally is probably a good idea but after each   
   > guest has left seems a bit overkill.   
      
   Yes, it would be overkill for someone who had a lot of visitors.  OTOH   
   I've had DSL (and this wireless router) for five years now, and since   
   then haven't even had a single guest who would have had any interest in   
   connecting to my DSL.  My only guests seems to be neighbors or other   
   local people who'd rather wait until they get back home.   
      
   > Security is not just being proactive but also making accurate   
   > assessments of the attack probability and consequenses if it succeeds.   
      
   Definitely!  Given my lifestyle, I've decided that changing my PSK   
   /only/ when guests leave, at most once every few years, wouldn't be   
   enough.  My plan is to change it every month or two... or would you   
   recommend some other interval?  I've noticed that of my neighbors within   
   Wi-Fi reception distance, mine seems to be the only system that's up   
   most of the time, which I assume would make it the likeliest target for   
   crackers.   
      
   Adam   
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