Hi
I agree, NAT is supposed to be almost impossible to detect.
Change your dial-in password now and see what happens next billing cycle? Perhaps your mate who you helped to setup his computer will ring you later
Hi, One way that NAT is often detectable is by looking at the TTL of packets from the one IP address, almost all packets coming from one system should have the same TTL, the nat'd machine will have a different TTL as it has to go an extra hop. Find it unlikely they are using that to determine multiple machine and would also suggest what Gund did re changing the dial-in password. If they are using that and using a linux machine as your gateway it is easy to overcome by using iptables to change the TTL on packets leaving the network to have the same TTL. Regards, Steve ----- Original Message ----- From: "Gund Wehsling" <Gund.Wehsling(a)computerland.co.nz> To: "Waikato Linux Users Group" <wlug(a)list.waikato.ac.nz>; "Waikato Linux Users Group" <wlug(a)list.waikato.ac.nz> Sent: Friday, November 19, 2004 10:51 AM Subject: RE: [wlug] Overlapping usage nonsense this week to tell you the Internet connection you helped him with has stopped working?
Of course I have done that before.
Gund
-----Original Message----- From: James Clark [mailto:jamesc(a)bofh.co.nz] Sent: Fri 19/11/2004 12:04 To: Waikato Linux Users Group Cc: Subject: Re: [wlug] Overlapping usage nonsense
On Fri, Nov 19, 2004 at 11:17:58AM +1300, Jared Wigmore wrote:
Having got a network and Internet connection sharing set up (thanks Bruce), Xtra is now charging my family for "overlapping usage" via my Linux computer. (The Internet connection is on the family computer, with Windows XP professional.)
Overlapping usage: http://www.xtra.co.nz/help/0,,6155-1452314,00.html (if the link works)
I suspect someone is dialling up with your account simultaniously, not because your NAT-ing...
James.
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