Possible to Ban Clients by Name? about bitcoin HOT 6 CLOSED

Are you sure it's "Satoshi-BTC" and not "Satoshi-BTF"? bitnodes.io reports 12 nodes with the user agent /Satoshi-BTF(BitcoinFinance):0.15.1/, most of them in China.

from bitcoin.

You can not ban by user agent (that is very easily spoofed) but you can ban a range of IPs. What exactly is happening here? What are you receiving? Bitcoin Core already has lots of DoS mitigation mechanisms.

from bitcoin.

I don't think it would be effective. If we implemented something like it and, if they're bad/malicious peers, they can just vary it and bypass this ban.

from bitcoin.

Looking at a few of my nodes, I haven't seen any /Satoshi-BTC(Bitcoin Finance):0.15.1/ peers at all (yet?). Additionally, I don't see any unusual amounts of outbound traffic on my nodes.

Do you know what they are sending to you? Can you post some of the IP addresses or the IP subnet they are connecting from? Do you think this could be targeted to your node? Does your node offer any special services e.g. blockfilterindex=1 peerblockfilters=1 peerbloomfilters=1?

from bitcoin.

NACK on adding functionality for banning by user agent. The user agent (subversion) an arbitrary string that clients can send, so this is super easy to circumvent, and a potential footgun (generally, you'd want to connect to as many different clients as possible to reduce the chance of the node ending up on an isolated "island").

from bitcoin.

It is BTF and it is still happening. The subnets have been all over the place and even in many data centers. I'm not going to bother updating this because I have my own theories about who is behind this and where they are and spoke to the secret service today and turned over all of my logs for them to review and I was told I am NOT the only party to report this exact issue in the last week to them.

from bitcoin.