drop tcp $EXTERNAL_NET any -> $HOME_NET $SMTP_PORT (msg:"[SENDMAIL] VRFY or EXPN root attempt"; content: " root"; nocase; pcre: "/vrfy|expn/i"; classtype: attempted-recon; flowbits: set, recon, 86400; program: sm-mta|sendmail; reference: url,wiki.quadrantsec.com/bin/view/Main/5000034; fwsam: src, 1 day; parse_src_ip: 1; reference:arachnids,31; reference:cve,1999-0531; reference:nessus,10249; sid: 5000034; rev:7;)

-- Main.Sagan-Wiki-Add - 2015-10-21

New revisions of 5000034 will be below...

Topic revision: r1 - 2015-10-21 - Sagan-Wiki-Add
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