On 6/16/06, Travis Kalanick <[EMAIL PROTECTED]> wrote:
... It got me to thinking about ICMP tunneling around these wireless "toll booths" so I could travel Asia and even the states without having to communicate over those popular ports that cost money to communicate over.
depending on how the captive portal is setup i've had luck using an openvpn connection in UDP mode to port 53 to a server i run at home or elsewhere. obviously that means you can't run DNS on this host too. if the portal is setup properly (that is, they provide a DNS server and restrict all lookups to this endpoint) then you would have to use a more inefficient Kaminsky style DNS tunnel. the problem with using ICMP (which otherwise might work well) is how frequently it gets dropped or filtered, especially if you try sending large payloads in ping packets for example. this would be a fun experiment. there was also a very NOT legal utility released last year at defcon (i think it was called "partyline" but i can't find it anymore) that would sniff for authenticated users who paid for service, set your wireless MAC to match, and then use a UDP openvpn tunnel for transport on their session without kicking them off or causing problems (like the TCP stack does when two hosts are sharing an IP/MAC). and last, it's not really applicable to your situation but there is even a covert tunnel utility using tun/tap devices that performs raw packet injection of specific types of 802.11 control/mgmt packets that are always responded to so that two clients could use a WISP tower AP for backhaul for example. i'd be curious to know if you have much luck, or if anyone else on the list is aware of other tunneling applications/methods. this always reminded me of NAT busting to some degree, and i expect over time a good p2p toolkit will include all sorts of such features for internetworking across various transports and environments. _______________________________________________ p2p-hackers mailing list [email protected] http://zgp.org/mailman/listinfo/p2p-hackers _______________________________________________ Here is a web page listing P2P Conferences: http://www.neurogrid.net/twiki/bin/view/Main/PeerToPeerConferences
