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.