alert syslog $EXTERNAL_NET any -> $HOME_NET any (msg:"[ZIMBRA] MS ActiveSync - Brute force invalid password [5/3]"; content: "error=authentication failed"; content: "invalid password"; flowbits: set,brute_force,21600; classtype: unsuccessful-user; reference: url,wiki.quadrantsec.com/bin/view/Main/5003031; parse_src_ip: 1; program: audit; after: track by_src, count 5, seconds 900; threshold: type limit, track by_src, count 3, seconds 900; fwsam: src, 1 day; sid:5003031; rev:1;)

-- Main.Sagan-Wiki-Add - 2016-12-30

New revisions of 5003031 will be below...