Commit Graph

1 Commits (954e3e1f3ff9da4ee3ab3108f916a1df5e5548ec)

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;
7 years ago