Rule History

SID: 2101446 • Source: et/open

Versions (2)

Version DetailsCurrent

Rev: 7 • Sep 23, 2010, 12:00 PM

Message:

GPL SMTP vrfy root

Rule:

alert tcp $EXTERNAL_NET any -> $SMTP_SERVERS 25 (msg:"GPL SMTP vrfy root"; flow:to_server,established; content:"vrfy"; nocase; content:"root"; distance:1; nocase; pcre:"/^vrfy\s+root/smi"; classtype:attempted-recon; sid:2101446; rev:7; metadata:created_at 2010_09_23, signature_severity Unknown, updated_at 2019_07_26;)

Created:

Sep 23, 2010, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 30, 2025, 12:04 AM

Filename:

rules/emerging-smtp.rules