From 4f20f72f4d1cba9f3403f9dc8f6bad9bd6f63228 Mon Sep 17 00:00:00 2001 From: Victor Julien Date: Sat, 20 Apr 2013 19:38:43 +0200 Subject: [PATCH] DNS: add event rules file --- rules/dns.rules | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 rules/dns.rules diff --git a/rules/dns.rules b/rules/dns.rules new file mode 100644 index 0000000000..030628d56b --- /dev/null +++ b/rules/dns.rules @@ -0,0 +1,11 @@ +# Response (answer) we didn't see a Request for. Could be packet loss. +alert dns any any -> any any (msg:"SURICATA DNS Unsollicited response"; flow:to_client; app-layer-event:dns.unsollicited_response; sid:2240001; rev:1;) +# Malformed data in request. Malformed means length fields are wrong, etc. +alert dns any any -> any any (msg:"SURICATA DNS malformed request data"; flow:to_client; app-layer-event:dns.malformed_data; sid:2240002; rev:1;) +alert dns any any -> any any (msg:"SURICATA DNS malformed response data"; flow:to_server; app-layer-event:dns.malformed_data; sid:2240003; rev:1;) +# Response flag set on to_server packet +alert dns any any -> any any (msg:"SURICATA DNS Not a request"; flow:to_server; app-layer-event:dns.not_a_request; sid:2240004; rev:1;) +# Response flag not set on to_client packet +alert dns any any -> any any (msg:"SURICATA DNS Not a response"; flow:to_client; app-layer-event:dns.not_a_response; sid:2240005; rev:1;) +# Z flag (reserved) not 0 +alert dns any any -> any any (msg:"SURICATA DNS Z flag set"; app-layer-event:dns.z_flag_set; sid:2240006; rev:1;)