RE: source filtering

[Scott McGrath <SMcGrath () YBP com>]

GTE and ATT both filter via access lists on the customers CPE routers IF
they provide the routers to the customer

> -----Original Message-----
> From: Jared Mauch [SMTP:jared () puck nether net]
> Sent: Tuesday, January 12, 1999 12:31 PM
> To:   nanog () merit edu
> Subject:      source filtering
>
>
>       I'm interested in what providers actually do source
> filtering of their customers.
>
>       Including:
>
>       1) Using access-lists to filter your customers
>       2) Using the "ip verifiy unicast reverse-path" Cisco feature
> (it's in 11.1CC images when you use CEF, so I don't get a flood
> of e-mails)
>       3) Using other router vendors and features you have to
> filter source addresses.
>
>       I'd like to summarize this all and start a quest to fix
> providers that don't source filter (as people quest against spam, and
> against smurfable network blocks).
>
>       jared
>
> -- 
> Jared Mauch  | pgp key available via finger from jared () puck nether net
> clue++;      | http://puck.nether.net/~jared/  My statements are only
> mine.