mirror of https://github.com/fail2ban/fail2ban
Merge pull request #1710 from sebres/0.10-test-with-filter-options
0.10 filter options extensionpull/1715/head
Serg G. Brester
8 years ago
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GitHub
commit
1bcde678c6
@ -1,11 +0,0 @@
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# Fail2Ban aggressive ssh filter for at attempted exploit
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#
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# Includes failregex of both sshd and sshd-ddos filters
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#
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[INCLUDES]
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before = sshd.conf
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[Definition]
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mode = %(aggressive)s
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# Fail2Ban ssh filter for at attempted exploit
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#
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# The regex here also relates to a exploit:
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#
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# http://www.securityfocus.com/bid/17958/exploit
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# The example code here shows the pushing of the exploit straight after
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# reading the server version. This is where the client version string normally
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# pushed. As such the server will read this unparsible information as
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# "Did not receive identification string".
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[INCLUDES]
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before = sshd.conf
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[Definition]
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mode = %(ddos)s
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# sshd-aggressive includes sshd and sshd-ddos failregex's:
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# addFILE: "sshd"
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# addFILE: "sshd-ddos"
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# http://forums.powervps.com/showthread.php?t=1667
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# failJSON: { "time": "2005-06-07T01:10:56", "match": true , "host": "69.61.56.114" }
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Jun 7 01:10:56 host sshd[5937]: Did not receive identification string from 69.61.56.114
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# gh-864(1):
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# failJSON: { "match": false }
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Nov 24 23:46:39 host sshd[32686]: SSH: Server;Ltype: Version;Remote: 127.0.0.1-1780;Protocol: 2.0;Client: libssh2_1.4.3
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# failJSON: { "time": "2004-11-24T23:46:43", "match": true , "host": "127.0.0.1", "desc": "Multiline for connection reset by peer (1)" }
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Nov 24 23:46:43 host sshd[32686]: fatal: Read from socket failed: Connection reset by peer [preauth]
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# gh-864(2):
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# failJSON: { "match": false }
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Nov 24 23:46:40 host sshd[32686]: SSH: Server;Ltype: Kex;Remote: 127.0.0.1-1780;Enc: aes128-ctr;MAC: hmac-sha1;Comp: none [preauth]
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# failJSON: { "time": "2004-11-24T23:46:43", "match": true , "host": "127.0.0.1", "desc": "Multiline for connection reset by peer (2)" }
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Nov 24 23:46:43 host sshd[32686]: fatal: Read from socket failed: Connection reset by peer [preauth]
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# gh-864(3):
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# failJSON: { "match": false }
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Nov 24 23:46:41 host sshd[32686]: SSH: Server;Ltype: Authname;Remote: 127.0.0.1-1780;Name: root [preauth]
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# failJSON: { "time": "2004-11-24T23:46:43", "match": true , "host": "127.0.0.1", "desc": "Multiline for connection reset by peer (3)" }
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Nov 24 23:46:43 host sshd[32686]: fatal: Read from socket failed: Connection reset by peer [preauth]
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# several other cases from gh-864:
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# failJSON: { "time": "2004-11-25T01:34:12", "match": true , "host": "127.0.0.1", "desc": "No supported authentication methods" }
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Nov 25 01:34:12 srv sshd[123]: Received disconnect from 127.0.0.1: 14: No supported authentication methods available [preauth]
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# failJSON: { "time": "2004-11-25T01:35:13", "match": true , "host": "127.0.0.1", "desc": "No supported authentication methods" }
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Nov 25 01:35:13 srv sshd[123]: error: Received disconnect from 127.0.0.1: 14: No supported authentication methods available [preauth]
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# failJSON: { "time": "2004-11-25T01:35:14", "match": true , "host": "192.168.2.92", "desc": "Optional space after port" }
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Nov 25 01:35:14 srv sshd[3625]: error: Received disconnect from 192.168.2.92 port 1684:14: No supported authentication methods available [preauth]
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# gh-1545:
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# failJSON: { "time": "2004-11-26T13:03:29", "match": true , "host": "192.0.2.1", "desc": "No matching cipher" }
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Nov 26 13:03:29 srv sshd[45]: Unable to negotiate with 192.0.2.1 port 55419: no matching cipher found. Their offer: aes256-cbc,rijndael-cbc@lysator.liu.se,aes192-cbc,aes128-cbc,arcfour128,arcfour,3des-cbc,none [preauth]
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# gh-1117:
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# failJSON: { "time": "2004-11-26T13:03:30", "match": true , "host": "192.0.2.2", "desc": "No matching key exchange method" }
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Nov 26 13:03:30 srv sshd[45]: fatal: Unable to negotiate with 192.0.2.2 port 55419: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1
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# failJSON: { "match": false }
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Nov 26 15:03:30 host sshd[22440]: Connection from 192.0.2.3 port 39678 on 192.168.1.9 port 22
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# failJSON: { "time": "2004-11-26T15:03:31", "match": true , "host": "192.0.2.3", "desc": "Multiline - no matching key exchange method" }
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Nov 26 15:03:31 host sshd[22440]: fatal: Unable to negotiate a key exchange method [preauth]
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