I want to restreint access to my ethereum node (geth) via rpc interface for some machines, for example : localhost and 10.x.x.x
how to deal with that?
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I suppose you want to restrict outbound as well as inbound connections.
There is parameter
allow-ips for filtering outbound connections in
parity, not sure about
--allow-ips FILTER Filter outbound connections.
It can help partially, but I think it would be better to do it on OS level.