Re: TraceRoute (Warning: off topic)

From: Andre Fachat (a.fachat_at_physik.tu-chemnitz.de)
Date: 1999-03-13 17:55:21

Robin Harbron wrote:
> Howard Herman wrote:
> > Can a user of an ISP, with shell access, and after doing a traceroute
> > change the routing that his FTP client, or web browser uses?  Or, is this
> > limited to the administrator of the ISP?
> 
> IP does have an option called "Strict Source Routing" which would
> force an IP packet to take a specific path over the network - if
> it is unable to comply with the path, the IP packet will be discarded,
> and an ICMP error will be sent back to the source.

Source routing is considered a security issue I think. 
Linux' kernel default is to "drop source routed packets".

Andre

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