Reading the Polkadot docs, I've run into the following statement:
Validators should only run the Polkadot binary, and they should not listen on any port other than the configured p2p port.
So far, what I understand is that when someone submits a transaction, every network participant will have to validate the transaction, so It will eventually reach a validator node. So I was wondering, where does the Polkadot Chrome extension connect to if only the libp2p port is available? Are there sync nodes that only gossip transactions?