SMcGrath at YBP.com
Wed Jan 13 20:41:34 UTC 1999
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 at puck.nether.net]
> Sent: Tuesday, January 12, 1999 12:31 PM
> To: nanog at merit.edu
> Subject: source filtering
> I'm interested in what providers actually do source
> filtering of their customers.
> 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 Mauch | pgp key available via finger from jared at puck.nether.net
> clue++; | http://puck.nether.net/~jared/ My statements are only
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