Commit Graph

1 Commits (d465bb86863acd4c0cd534f0748c5a2ef1283241)

Author SHA1 Message Date
Jason Ish d79c23baa3 dns/detect: dns.opcode keyword
Add a rule keyword, dns.opcode to match on the opcode flag
found in the DNS request and response headers.

Only exact matches are allowed with negation.

Examples:
  - dns.opcode:4;
  - dns.opcode:!1;
6 years ago