ET INFO NBNS Name Query Response Possible WPAD Spoof BadTunnel

Query · suricata

byte_test:1,&,0x80,2;
byte_test:1,!&,0x40,2;
byte_test:1,!&,0x20,2;
byte_test:1,!&,0x10,2;
byte_test:1,=,0x00,3;
content:"|00 00|"; offset:4; depth:2;
content:"|46 48 46 41 45 42 45|"; fast_pattern;
Raw source ET INFO NBNS Name Query Response Possible WPAD Spoof BadTunnel · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert udp any any -> $HOME_NET 137 (
    msg:"ET INFO NBNS Name Query Response Possible WPAD Spoof BadTunnel";
    byte_test:1,&,0x80,2;
    byte_test:1,!&,0x40,2;
    byte_test:1,!&,0x20,2;
    byte_test:1,!&,0x10,2;
    byte_test:1,=,0x00,3;
    content:"|00 00|"; offset:4; depth:2;
    content:"|46 48 46 41 45 42 45|"; fast_pattern;
    reference:url,tools.ietf.org/html/draft-ietf-wrec-wpad-01;
    reference:url,ietf.org/rfc/rfc1002.txt;
    classtype:protocol-command-decode;
    sid:2022914; rev:2;
    metadata:created_at 2016_06_23, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.