Queries regarding forwarders
Grant Taylor
gtaylor at tnetconsulting.net
Thu Oct 25 21:34:36 UTC 2018
On 10/25/2018 03:25 PM, Lee wrote:
> I feel like I'm missing something :(
I'll see if I can fill in below.
> I read this
> https://medium.com/@brannondorsey/attacking-private-networks-from-the-internet-with-dns-rebinding-ea7098a2d325
> and used RPZ to block anything coming from outside that might be an
> internal address.
I'll read that and reply later if I feel it's warranted.
> I'm missing what filtering out things like benchmarking & documentation
> network addrs gets you beyond maybe saving some bandwidth?
Probably not much for most people.
I do use all sorts of IP ranges (test networks extensively) in my home /
lab networks. So I'd really rather external things not resolve to an
address that I may be using. But that's me being atypical.
> Same deal with using RPZ to block IPv4 BOGONs. What does RPZ blocking
> get you that you don't get by blocking them on your edge routers?
Defense in depth.
It's more of an exercise of can it be done. Read: Can I concoct
something that will receive feed from Team Cymru's BGP Bogon Rout Server
and turn it into an RPZ.
--
Grant. . . .
unix || die
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