Misbehaving Nodes

Note

Dash Core 18.1.0 introduced changes to how misbehaving peers are treated.

Take note that for both types of broadcasting, mechanisms are in place to punish misbehaving peers who take up bandwidth and computing resources by sending false information. Since Dash Core 18.1.0, peers that misbehave (e.g. send us invalid blocks) are referred to as discouraged nodes in log output. They are not strictly banned: incoming connections are still allowed from them, but they’re preferred for eviction.

Furthermore, a few additional changes are introduced to how discouraged addresses are treated:

• Discouraging an address does not time out automatically after 24 hours (or the -bantime setting). Depending on traffic from other peers, discouragement may time out at an indeterminate time.

• Discouragement is not persisted over restarts.

• There is no method to list discouraged addresses. They are not returned by the listbanned RPC.

• Discouragement cannot be removed with the setban remove RPC command. If you need to remove a discouragement, you can remove all discouragements by stopping and restarting your node.

If a peer gets a banscore above the -banscore=<n> threshold (100 by default), they will be disconnected and discouraged.

Type	Misbehavior	Ban Score	Description
Net	GetBlockTxn Index Error	100	Peer relayed a getblocktxn message with out-of-bound indices
Net	Bloom Filter Service	100	Bloom filter message received from peer that has bloom filter commands disabled by default (protocol version > 70201) (filterload message, filteradd message, or filterclear message)
Net	Block Rejected	1	Peer rejected the block it requested from us
Net	Duplicate Version	1	Duplicate version message received
Net	Wrong Devnet	100	Peer responded with the wrong devnet version (version message)
Net	Wrong Devnet	1	Peer connected using the wrong devnet version (version message)
Net	No Version	1	Received a message prior to receiving a version message
Net	No Verack	1	After sending version message, received a message other than a verack message back first
Net	Address List Size	20	More than 1000 addresses received (addr message)
Net	Inventory List	20	More than MAX_INV_SZ (50000) inventories received (inv message)
Net	Get Data Size	20	More than MAX_INV_SZ (50000) inventories requested (getdata message)
Net	Orphan Transaction	Varies	Peer relayed an invalid orphan transaction. Ban score varies from 0-100 based on the specific reason (values set by AcceptToMemoryPoolWorker())
Net	Bad Transaction	Varies	Transaction rejected from the mempool. Consensus failures score 100, including transactions that fail the DERSIG, NULLDUMMY, CHECKLOCKTIMEVERIFY, or CHECKSEQUENCEVERIFY script checks
Net	Invalid Header	Varies	Invalid block header received from peer (cmpctblock message)
Net	Invalid CompactBlock	100	Invalid compact block /non-matching block transactions received from peer (cmpctblock message)
Net	Repeated Block Transactions	100	Peer sent block transactions for a compact block whose previous reconstruction attempt failed (blocktxn message)
Net	Mutated Block	100	Peer relayed a mutated block (merkle root mismatch or 64-byte transaction malleation) (block message)
Net	Header List Size	20	More than MAX_HEADERS_RESULTS (2000) headers received (headers message)
Net	Header List Sequence	20	Non-continous headers sequence received (headers message)
Net	Invalid Block	Varies	Invalid block header received from peer
Net	Bloom Filter Size	100	Malformed or oversized bloom filter: more than 36,000 bytes or 50 hash functions (filterload message), or a data element exceeding the maximum script element size (520) (filteradd message)
Net	Not Found List Size	20	More than MAX_INV_SZ (50000) entries received (notfound message)
Net	MN List Diff	1	Failed to get masternode list diff (getmnlistd message). Not applied when the failure is caused by block data this node does not have (pruned or below an unvalidated snapshot base)
Net	Unrequested MN List Diff	100	Peer provided an unrequested masternode list diff (mnlistdiff message)
Net	Quorum Rotation Info	1	Failed to get quorum rotation info (getqrinfo message). Not applied when the failure is caused by block data this node does not have (pruned or below an unvalidated snapshot base)
Net	Malformed Quorum Rotation Info Request	100	Peer relayed a malformed request, including one with more than 4096 base block hashes (getqrinfo message)
Net	Unrequested Quorum Rotation Info	100	Peer provided unrequested quorum rotation info (qrinfo message)
InstantSend	Invalid Lock Message	100	Invalid TXID or inputs in lock message (isdlock message)
InstantSend	Verify Error	20	Peer relayed a message that failed to verify
LLMQ ChainLock	Invalid	10	Invalid ChainLock message (clsig message)
LLMQ ChainLock	Unrequested	10	Peer sent a ChainLock that was not requested from it (clsig message)
LLMQ Commitment	Unrequested	10	Peer sent a final commitment that was not requested from it (qfcommit message)
LLMQ Commitment	Stale Commitment	100	Peer with protocol version 70239 or higher relayed a commitment for a quorum more than one DKG interval old (qfcommit message)
LLMQ Commitment	Null QcTx	100	Peer relayed a block with a null commitment
LLMQ Commitment	Invalid LLMQ Type	100	Peer relayed a block containing an invalid LLMQ Type
LLMQ Commitment	Invalid Height	100	Peer relayed a block that is not the first block in the DKG interval
LLMQ Commitment	Invalid Commitment	100	Peer relayed a block with an invalid quorum commitment
LLMQ DKG	Unrequested	10	Peer sent a DKG message that was not requested from it (e.g. qcontrib message)
LLMQ DKG	Unverified Peer	10	Peer that is not a verified masternode relayed a DKG message
LLMQ DKG	Empty Message	100	Peer relayed a message too short to contain the LLMQ type and quorum hash
LLMQ DKG	Invalid LLMQ Type	100	Peer relayed a message for an incorrect LLMQ Type
LLMQ DKG	Invalid Quorum Hash	100	Peer relayed a message whose quorum hash is a block with no parent block or is not a valid quorum base block
LLMQ DKG	Invalid Message	100	Peer relayed a message that was oversized, malformed, or could not be deserialized
LLMQ DKG	Preverify Failed	100	Peer relayed a message that could not be pre-verified
LLMQ DKG	Signature	100	Peer relayed a message with an invalid signature
LLMQ DKG	Full Verify Failed	100	Peer relayed a message that failed full verification
LLMQ Signing	Too Many Messages	100	Maximum message count exceed in qsigsesann message, qsigsinv message, qgetsigs message, or qbsigs message
LLMQ Signing	Signature	100	Peer relayed a message with an invalid recovered signature or signature share
LLMQ Quorum Data	Unauthorized Request	10	Request received by a node that is not a masternode, or from a peer that is neither a verified masternode nor a qwatch connection (qgetdata message)
LLMQ Quorum Data	Oversized Request	100	Request payload larger than a valid request (qgetdata message)
LLMQ Quorum Data	Invalid LLMQ Type	100	Request for an unknown LLMQ type (qgetdata message)
LLMQ Quorum Data	Too Many Requests	25	More than 64 requests from one masternode within about 5 minutes, or a repeated request for the same quorum within 5 minutes unless a requested quorum verification vector is missing (qgetdata message)
LLMQ Quorum Data	Unauthorized Response	10	Response from a peer that is not a verified masternode, or received by a node that is neither a masternode nor watching quorums (qdata message)
LLMQ Quorum Data	Unrequested Response	10	Response that was not requested, was already received, or does not match the request (qdata message)
LLMQ Quorum Data	Invalid Data Size	100	Verification vector or encrypted contributions with the wrong number of entries (qdata message)
LLMQ Quorum Data	Invalid Data	10	Invalid verification vector, contribution share, or resulting secret key share (qdata message)
Masternode Authentication	Duplicate Message	100	Only 1 message allowed (mnauth message)
Masternode Authentication	Invalid Services	100	Peer not advertising NODE_NETWORK or NODE_BLOOM services (mnauth message)
Masternode Authentication	Empty Hash	100	Peer relayed a message with a null ProRegTx hash (mnauth message)
Masternode Authentication	Signature	100	Peer relayed a message with an invalid signature (mnauth message)
Masternode Authentication	Invalid MN	10	Peer not in the valid masternode list (mnauth message)
Masternode Authentication	Invalid Signature	10	Signature verification failed (mnauth message)
Governance	Sync	20	Requesting a governance sync too frequently (govsync message with empty hash), or repeatedly requesting votes for the same governance object that this node can sync (govsync message with an object hash and non-empty bloom filter)
Governance	Invalid Sync Filter	100	Malformed or oversized bloom filter (govsync message)
Governance	Malformed Vote	100	Malformed vote, including a signature that is not 65 or 96 bytes (govobjvote message)
Governance	Invalid Object	20	Peer relayed an invalid governance object (govobj message)
Governance	Invalid Vote	20	Peer relayed an invalid/invalid old vote(govobjvote message)
Governance	Unsupported Vote Signal	20	Vote signal outside the accepted range (see govobjvote message)
CoinJoin	Signature	10	Peer relayed a message with an invalid signature (dsq message)
CoinJoin	Invalid DSTX	10	Peer relayed a CoinJoin broadcast transaction with an invalid structure or signature (dstx message)
CoinJoin	Unverifiable DSTX	1	Peer relayed a CoinJoin broadcast transaction from an unknown masternode, or one that is only valid under rules activating at the next block (dstx message)
Spork	Invalid Time	100	Peer relayed a spork with a timestamp too far in the future (spork message)
Spork	Signature	100	Peer relayed a spork with an invalid signature (spork message)
Spork	Malformed	100	Peer relayed a spork that could not be deserialized (spork message)
Platform	Unknown Masternode	1	Ban message references a ProTx hash not in the masternode list (platformban message)
Platform	Invalid Node Type	100	Ban message references a masternode that is not an evonode (platformban message)
Platform	Invalid Height	1	Requested height is up to 5 blocks outside the accepted range (576 blocks below the chain tip through the tip) (platformban message)
Platform	Invalid Height	10	Requested height is more than 5 blocks outside the accepted range (platformban message)
Platform	Unknown Quorum	100	Ban message references an unknown Platform quorum (platformban message)
Platform	Signature	100	Ban message has an invalid quorum signature (platformban message)