During a recent discussion, it was asserted that a node running Bitcoin Core behind a firewall with port 8333 closed would still relay blocks/transactions to peers. Unsolicited connections would be blocked due to the closed port, but the node itself would still relay blocks and transactions to any connected peers.

I'm looking for a good resource that settles the issue. Where can I find one?

  • The Bitcoin Core source code would be the ultimate resource... – Nate Eldredge Jun 16 '15 at 0:47

Yes it will, connection directionality will not affect block and transaction relaying.

  • Thanks for the answer - where can I find out more about this? – Rich Apodaca Jun 16 '15 at 19:15

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