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As someone who has been doing 'shoestring independent ISPs' for almost 15 years my impression is that nearly all upstream providers (the ones we buy service fro
by grahamburger 9y ago
As someone who has been doing 'shoestring independent ISPs' for almost 15 years my impression is that nearly all upstream providers (the ones we buy service from - not always but sometimes tier 1 providers) do outgoing IP filtering. Whenever I get a new IPv4 allocation from ARIN (at least when we used to be able to do that - they're all gone now) we had to go through a process with our upstream provider so that they would allow our BGP advertisements for that block as well as allow those source addresses to route through their network.
- sathackr 9y agoThey may filter what routes you can advertise via BGP, but nearly every Tier 1(And most Tier 2) providers will accept traffic sourced from any IP address. I handle about 10 different connections and can source traffic from any IP on all of them.