[clug] How to prevent port forwarding

Kim Holburn kim.holburn at nicta.com.au
Sun Apr 23 03:32:33 GMT 2006

Why would they want to anyway?

On 2006 Apr 22, at 11:09 PM, Christopher Zhang wrote:
> I am interested to find out if it is possible, if so, how, that  
> some ISPs prevent 1 registered Internet user to distribute their  
> Internet connection by running their computer as a gateway for  
> other users to route through. The closest thing I can think of is  
> TTL, since if other hosts are routed through the legitimate host,  
> then their TTL will be at least be 1 less than if it were coming  
> from the legitimate host, without any artificial changes. Is this a  
> plausible way for ISPs ? Can anyone show me some iptables commands  
> that the ISPs would do? and also how can I change my TTLs and so on.

Kim Holburn
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