Ignore selected peers #4413
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Ignore selected peers #4413
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clemahieu
reviewed
Feb 1, 2024
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We should also have an affirmative test that shows the ip blocking works. |
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I've moved the logic to the tcp_listener::on_connection function. I will try to add some unit tests next |
clemahieu
reviewed
Feb 1, 2024
| @@ -136,6 +137,13 @@ void nano::transport::tcp_listener::on_connection (std::function<bool (std::shar | |||
| [this_l, new_connection, cbk = std::move (callback)] (boost::system::error_code const & ec_a) mutable { | |||
| this_l->evict_dead_connections (); | |||
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| if (this_l->is_ip_blocked (new_connection->remote.address ())) | |||
| { | |||
| this_l->node.logger.info (nano::log::type::tcp_listener, "Connection refused from blocked IP: {}", new_connection->remote_endpoint ().address ().to_string ()); | |||
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I think this should remain a debug log as it could be high-volume.
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This PR introduces an optional list of ip addresses that a node operator wants to ignore. The peers are inserted in the config file as "blocked_peers"
Both ip v4 and v6 address formats are supported and can be mixed. Example:
blocked_peers = ["::ffff:10.0.0.1", "192.168.0.1"]
This could be useful for blocking malicious nodes.