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- 14 Oct 2014, 20:16
- Forum: Report Bugs (csf)
- Topic: LF_BIND not blocking DNS UDP 53 traffic
- Replies: 2
- Views: 5569
LF_BIND not blocking DNS UDP 53 traffic
When configuring LF_BIND for detection of repeated BIND denied requests, LFD detects and temporarily blocks TCP port 53 for the offending IP address but leaves UDP port 53 open for the attacks to continue. This can be verified by examining the temporary block list and the active IP tables rules. Exa...