""ET DNS DNS Query for vpnoverdns - indicates DNS tunnelling""
SID: 2018438
Revision: 4
Class Type: bad-unknown
Metadata: created_at 2014_05_02, updated_at 2024_01_30
Reference:
Protocol: udp
Source Network: $HOME_NET
Source Port: any
Destination Network: any
Destination Port: 53
Flow:
Contents:
-
Value: "|01|" Depth: 1 Offset: 2
-
Value: "|00 01 00 00 00 00 00|"
-
Value: "|03|tun|10|vpnoverdns|03|com|00|"
Within: 7
PCRE:
Special Options:
-
fast_pattern
-
nocase