Rblchecks

Current version: 0.1.4

Download Rblchecks

What is Rblchecks

Rblchecks is a small daemon which emulates a DNS server. Clients eg. smtp servers (by their DNS servers) may query it to know whether a host (by its reversed IP address) is blacklisted or not.

Rblchecks listens on port 53/udp (not on 53/tcp) and waits for queries. And responses with a 'host not found' message or with the IP address 127.0.0.2 if the queried IP address is blacklisted.

Features include:

• White and black list
• Lists may include single IP addresses as well as IP address ranges
• Reload lists with the HUP signal
• Chrooted environment
• Logging facility via syslog
• Runs with low privileges
• Supports a list of hosts allowed to query us

Send your comments, opinion, bugreport, etc. to rblchecks oxygen.datanet.hu