When you are using a open or any foreign wifi-service like at a cafe hotspot or the hotel, you could be presenting yourself for exposure by bonjour types of discovery.
Take a list of machines located at a hotel that I recently stayed at in Spain;
And here's a listing of devices found from afp-server services;
And even printers are exposed;
One thing that you need to considered, most hotSpot implementation filter ipv4 unicast to unicast traffic by isolation, but they don't so so great up a job nor should be trusted to filter ipv6. Take a simple trick of a ipv6-mlticast ping to the ALL-HOST and look at what I discovered ( ff02::1 )
Now I have a list of ipv6 hosts that I can probe or attack;
And you can check for open shares with no logins by using the link-local address of the target ;
Just a few concerns that you should be aware when using the local WiFi access at that Airport/Cafe/Hotel/etc......
Now you can do some things to reduce this;
ensure your local firewall is enabled
disable all services on wifi nic that would expose services
install a local end-point control application
ensure passwords for everthing ( no guest accounts )
and deploy very strong pass-phrases
NSE ( Network Security Expert) and Route/Switching Engineer.
kfelix -----a----t---- socpuppets ---dot---com
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