alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[PROFTPD] Attempt to login as a non-existent user [Brute Force] [5/5]"; content: "no such user"; classtype: unsuccessful-user; parse_src_ip: 3; program: proftpd; after: track by_src, count 5, seconds 300; parse_ip_src: 1; threshold: type limit, track by_src, count 5, seconds 300; fwsam: src, 1 day; reference: url,wiki.quadrantsec.com/bin/view/Main/5000080; sid: 5000080; rev:6;)

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

New revisions of 5000080 will be below...

alert tcp $EXTERNAL_NET any -> $HOME_NET $FTP_PORT (msg:"[PROFTPD] Attempt to login as a non-existent user [Brute Force] [5/5]"; content: "no such user"; classtype: unsuccessful-user; parse_src_ip: 3; program: proftpd; after: track by_src, count 5, seconds 300; parse_ip_src: 1; threshold: type limit, track by_src, count 5, seconds 300; fwsam: src, 1 day; flowbits: set,brute_force,21600; reference: url,wiki.quadrantsec.com/bin/view/Main/5000080; sid: 5000080; rev:7;)

-- Main.Sagan-Wiki-Add - 2016-8-30

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