What is the Botnet Controller List (BCL)?
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What is the Botnet Controller List (BCL)?
What is the Spamhaus Botnet Controller List (BCL)?
- It is an advisory “drop all traffic” list consisting of single IPv4 addresses that are used by cybercriminals to control infected computers (bots).
- BCL does not contain any subnets or CIDR prefixes larger than /32.
- BCL listings are made according to policies outlined in BCL Listing Criteria.
What is the purpose of BCL?
The main purpose of BCL is to block malicious traffic at the network edge.
- BCL can be used in several different types of devices, from firewalls to intrusion detection systems (IDS/IPS) and many other security appliances.
- BCL can also be used passively – for example, by checking the log files of web proxies, firewalls or any other security devices to detect botnet-generated traffic in your network.