source filtering

Scott McGrath SMcGrath at
Thu Jan 14 13:38:35 UTC 1999

I only spoke from my own experience with both carriers no offense intended

> -----Original Message-----
> From:	Tony Tauber [SMTP:ttauber at]
> Sent:	Wednesday, January 13, 1999 10:38 PM
> To:	Scott McGrath; Jared Mauch; nanog at
> Subject:	Re: source filtering
> On Jan 13,  3:41pm, Scott McGrath wrote:
> > Subject: RE: source filtering
> > GTE and ATT both filter via access lists on the customers CPE routers IF
> > they provide the routers to the customer
> > 
> It'd be nice if this information came from one of the entities
> named above. Here's a refinement for our part.
> GTE does not impose mandatory source address filtering via
> access-lists on customers' CPE routers. However, we have recently
> implemented Cisco's "ip verify unicast reverse-path".
> Tony Tauber
> GTE Network Engineering

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