In Transmission bittorrent client, there is an option to "enable blocklist", which has over 200,000 rules. I've tried searching but haven't found anything saying what the blocklist actually does.
Who is it blocking? And why might you need to block people? Will it affect my download speed?
Best Answer
Typically block lists in torrent clients are there to block any clients that show "abnormal" behaviour against your client - such as, too many connections per second, invalid connections amongst many others.
Although, I do not know about Transmission, some torrent clients have features of PeerGuardian build in which blocks known IP's that belong to law agencies and companies that are employed to attack, leech, infiltrate or sue users of P2P networks.
Can it slow down? Yes, probably, you may not be getting connections from clients capable of sending data - however, one of the items that it blocks is people sending repeatedly corrupt or invalid data, so it is not necessarily a bad thing.