If a ISP allows their routers to exchange routing information with the customer's routers any user would be able to appropriate IP addresses, wouldn't he? The Firewall-HOWTO states at the end of 6.4 section (BIG NOTE) that the ISP might not be routing packets for your private network address. How do ISPs avoid that anyone make unauthorized use of IP addresses? Do they forbid routing information exchange with customers routers? Do they additionally filter packets from/to IP addresses not assigned? I feel that the ISP forbids exchange of routing information with their customers. How does the ISP PPP daemon inform the routing daemon about who is connected to an interface and therefore what network address packets should be forwarded for him? What RFCs should I read to learn about routing? TIA Zacarias - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
