From owner-freebsd-questions@freebsd.org Sun Oct 25 15:14:40 2015 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 79F1C8142 for ; Sun, 25 Oct 2015 15:14:40 +0000 (UTC) (envelope-from ike@michaeleichorn.com) Received: from mx1.eichornenterprises.com (mx1.eichornenterprises.com [104.236.13.122]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mx1.eichornenterprises.com", Issuer "StartCom Class 1 Primary Intermediate Server CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 3EFE81E4D for ; Sun, 25 Oct 2015 15:14:39 +0000 (UTC) (envelope-from ike@michaeleichorn.com) Received: from mail.eichornenterprises.com (cpe-75-179-47-202.neo.res.rr.com [75.179.47.202]) by mx1.eichornenterprises.com (OpenSMTPD) with ESMTP id ef469e71; Sun, 25 Oct 2015 11:14:29 -0400 (EDT) Received: by mail.eichornenterprises.com (OpenSMTPD) with ESMTPSA id fc456c4e; TLS version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO; Sun, 25 Oct 2015 11:14:29 -0400 (EDT) Message-ID: <1445786229.29271.14.camel@michaeleichorn.com> Subject: Re: promiscuous mode messages From: "Michael B. Eichorn" To: Ernie Luzar , freebsd-questions Date: Sun, 25 Oct 2015 11:17:09 -0400 In-Reply-To: <562CCC10.80509@gmail.com> References: <562CCC10.80509@gmail.com> Content-Type: multipart/signed; micalg="sha-512"; protocol="application/x-pkcs7-signature"; boundary="=-dLn045AnTZPWCf+tGsvD" X-Mailer: Evolution 3.16.5 Mime-Version: 1.0 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Oct 2015 15:14:40 -0000 --=-dLn045AnTZPWCf+tGsvD Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sun, 2015-10-25 at 08:33 -0400, Ernie Luzar wrote: > Hello list >=20 > I was reviewing the console log [/var/og/messages] and noticed these=20 > messages. >=20 > xlo: promiscuous mode enabled > xlo: promiscuous mode disabled > xlo: promiscuous mode enabled > xlo: promiscuous mode disabled > xlo: promiscuous mode enabled > xlo: promiscuous mode disabled > xlo: promiscuous mode enabled > xlo: promiscuous mode disabled >=20 > Now to my knowledge I did nothing to cause this. > xl0 is the interface facing the public internet. Are you sure? Lots of networking/monitoring tools use promiscuous mode. In fact enabled/diabled like that is exactly what you will get if you run tcpdump without the -p option. > Could this have been a remote attacker? Not really. Promiscuous mode requires root to enable/disable. An attacker would need to be logged in and get root. Anyway try correlating the timestamps on /var/log/messages with /var/log/auth.log > How to disable xl0 from being able to enter promiscuous mode? Requires root to use already. Against a user with root resistance is futile. --=-dLn045AnTZPWCf+tGsvD Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgMFADCABgkqhkiG9w0BBwEAAKCCEqAw ggYwMIIFGKADAgECAgMOXcYwDQYJKoZIhvcNAQELBQAwgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQK Ew1TdGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWdu aW5nMTgwNgYDVQQDEy9TdGFydENvbSBDbGFzcyAxIFByaW1hcnkgSW50ZXJtZWRpYXRlIENsaWVu dCBDQTAeFw0xNTA2MTMyMDI0NDZaFw0xNjA2MTQwMDM1NTBaMEgxHzAdBgNVBAMMFmlrZUBtaWNo YWVsZWljaG9ybi5jb20xJTAjBgkqhkiG9w0BCQEWFmlrZUBtaWNoYWVsZWljaG9ybi5jb20wggEi MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDJVdWALPz5h2s5zUQGIJYl6Vp8FPtZNko8q/3s crCsxXJLprMaDdpnqTsmkbmEfKvsqPQE6HVOpGxVRTl/tCm+VvouW9eY9ITMigb1OnHdU13CKO0j drgeU1nHst0qxwsIofRD7nC4dakT6exnrVndlBmLrf/bLPh2qOM8YK5qKK6m33fE7AyYrwiYAWFT 3fERI7LakjaabrIoS/Y1rCdL5FaCTMOlRbZyduc8HkrgjT2JW+i4fVcKyGL5gExBJWfS3q1uGFaB ie6pYtl8lZPtvN0JSfibP003RBoLgzqHJKW91RL0qNeDjKZi/5nrlU398l9UoVvLLO3KxoPBXKCx AgMBAAGjggLcMIIC2DAJBgNVHRMEAjAAMAsGA1UdDwQEAwIEsDAdBgNVHSUEFjAUBggrBgEFBQcD AgYIKwYBBQUHAwQwHQYDVR0OBBYEFJZqarc6CcrOs6eAwOgrMznk5ZWWMB8GA1UdIwQYMBaAFFNy 7ZKc4NrLAVx8fpY1TvLUuFGCMCEGA1UdEQQaMBiBFmlrZUBtaWNoYWVsZWljaG9ybi5jb20wggFM BgNVHSAEggFDMIIBPzCCATsGCysGAQQBgbU3AQIDMIIBKjAuBggrBgEFBQcCARYiaHR0cDovL3d3 dy5zdGFydHNzbC5jb20vcG9saWN5LnBkZjCB9wYIKwYBBQUHAgIwgeowJxYgU3RhcnRDb20gQ2Vy dGlmaWNhdGlvbiBBdXRob3JpdHkwAwIBARqBvlRoaXMgY2VydGlmaWNhdGUgd2FzIGlzc3VlZCBh Y2NvcmRpbmcgdG8gdGhlIENsYXNzIDEgVmFsaWRhdGlvbiByZXF1aXJlbWVudHMgb2YgdGhlIFN0 YXJ0Q29tIENBIHBvbGljeSwgcmVsaWFuY2Ugb25seSBmb3IgdGhlIGludGVuZGVkIHB1cnBvc2Ug aW4gY29tcGxpYW5jZSBvZiB0aGUgcmVseWluZyBwYXJ0eSBvYmxpZ2F0aW9ucy4wNgYDVR0fBC8w LTAroCmgJ4YlaHR0cDovL2NybC5zdGFydHNzbC5jb20vY3J0dTEtY3JsLmNybDCBjgYIKwYBBQUH AQEEgYEwfzA5BggrBgEFBQcwAYYtaHR0cDovL29jc3Auc3RhcnRzc2wuY29tL3N1Yi9jbGFzczEv Y2xpZW50L2NhMEIGCCsGAQUFBzAChjZodHRwOi8vYWlhLnN0YXJ0c3NsLmNvbS9jZXJ0cy9zdWIu Y2xhc3MxLmNsaWVudC5jYS5jcnQwIwYDVR0SBBwwGoYYaHR0cDovL3d3dy5zdGFydHNzbC5jb20v MA0GCSqGSIb3DQEBCwUAA4IBAQB4K8iQw+0FRn3xEnB3vIIu2Vi4C3ZGnOMWP90FFXLrZ6uAu9AK xVCjXUVP6nAEsOopTMu769vVecdBvg0KO2i5aTDTdTLX4g9d020g4OLWW1NiynAkX8oKqJLqZ53q vHK4zP4KWPS3bSqDWVCosTMfI+H6tkg+6G3gS0HHoHTLKZhIT3z6PQZAfeofM7ed6NOdAcj0J2lP ODHzzz7Y9x4wMwYJdidorzUDVYkNIkim8ak7hK9F60NadA5w/BirFATSlzRyV0h1tl6oNisEaQcq tGvy6UoCTDhzaJ7pQValfDXJ/A47P0hNj/CX/PmkY1wQHsEJz2pbh5lqteP/fO0rMIIGMDCCBRig AwIBAgIDDl3GMA0GCSqGSIb3DQEBCwUAMIGMMQswCQYDVQQGEwJJTDEWMBQGA1UEChMNU3RhcnRD b20gTHRkLjErMCkGA1UECxMiU2VjdXJlIERpZ2l0YWwgQ2VydGlmaWNhdGUgU2lnbmluZzE4MDYG A1UEAxMvU3RhcnRDb20gQ2xhc3MgMSBQcmltYXJ5IEludGVybWVkaWF0ZSBDbGllbnQgQ0EwHhcN MTUwNjEzMjAyNDQ2WhcNMTYwNjE0MDAzNTUwWjBIMR8wHQYDVQQDDBZpa2VAbWljaGFlbGVpY2hv cm4uY29tMSUwIwYJKoZIhvcNAQkBFhZpa2VAbWljaGFlbGVpY2hvcm4uY29tMIIBIjANBgkqhkiG 9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyVXVgCz8+YdrOc1EBiCWJelafBT7WTZKPKv97HKwrMVyS6az Gg3aZ6k7JpG5hHyr7Kj0BOh1TqRsVUU5f7Qpvlb6LlvXmPSEzIoG9Tpx3VNdwijtI3a4HlNZx7Ld KscLCKH0Q+5wuHWpE+nsZ61Z3ZQZi63/2yz4dqjjPGCuaiiupt93xOwMmK8ImAFhU93xESOy2pI2 mm6yKEv2NawnS+RWgkzDpUW2cnbnPB5K4I09iVvouH1XCshi+YBMQSVn0t6tbhhWgYnuqWLZfJWT 7bzdCUn4mz9NN0QaC4M6hySlvdUS9KjXg4ymYv+Z65VN/fJfVKFbyyztysaDwVygsQIDAQABo4IC 3DCCAtgwCQYDVR0TBAIwADALBgNVHQ8EBAMCBLAwHQYDVR0lBBYwFAYIKwYBBQUHAwIGCCsGAQUF BwMEMB0GA1UdDgQWBBSWamq3OgnKzrOngMDoKzM55OWVljAfBgNVHSMEGDAWgBRTcu2SnODaywFc fH6WNU7y1LhRgjAhBgNVHREEGjAYgRZpa2VAbWljaGFlbGVpY2hvcm4uY29tMIIBTAYDVR0gBIIB QzCCAT8wggE7BgsrBgEEAYG1NwECAzCCASowLgYIKwYBBQUHAgEWImh0dHA6Ly93d3cuc3RhcnRz c2wuY29tL3BvbGljeS5wZGYwgfcGCCsGAQUFBwICMIHqMCcWIFN0YXJ0Q29tIENlcnRpZmljYXRp b24gQXV0aG9yaXR5MAMCAQEagb5UaGlzIGNlcnRpZmljYXRlIHdhcyBpc3N1ZWQgYWNjb3JkaW5n IHRvIHRoZSBDbGFzcyAxIFZhbGlkYXRpb24gcmVxdWlyZW1lbnRzIG9mIHRoZSBTdGFydENvbSBD QSBwb2xpY3ksIHJlbGlhbmNlIG9ubHkgZm9yIHRoZSBpbnRlbmRlZCBwdXJwb3NlIGluIGNvbXBs aWFuY2Ugb2YgdGhlIHJlbHlpbmcgcGFydHkgb2JsaWdhdGlvbnMuMDYGA1UdHwQvMC0wK6ApoCeG JWh0dHA6Ly9jcmwuc3RhcnRzc2wuY29tL2NydHUxLWNybC5jcmwwgY4GCCsGAQUFBwEBBIGBMH8w OQYIKwYBBQUHMAGGLWh0dHA6Ly9vY3NwLnN0YXJ0c3NsLmNvbS9zdWIvY2xhc3MxL2NsaWVudC9j YTBCBggrBgEFBQcwAoY2aHR0cDovL2FpYS5zdGFydHNzbC5jb20vY2VydHMvc3ViLmNsYXNzMS5j bGllbnQuY2EuY3J0MCMGA1UdEgQcMBqGGGh0dHA6Ly93d3cuc3RhcnRzc2wuY29tLzANBgkqhkiG 9w0BAQsFAAOCAQEAeCvIkMPtBUZ98RJwd7yCLtlYuAt2RpzjFj/dBRVy62ergLvQCsVQo11FT+pw BLDqKUzLu+vb1XnHQb4NCjtouWkw03Uy1+IPXdNtIODi1ltTYspwJF/KCqiS6med6rxyuMz+Clj0 t20qg1lQqLEzHyPh+rZIPuht4EtBx6B0yymYSE98+j0GQH3qHzO3nejTnQHI9CdpTzgx888+2Pce MDMGCXYnaK81A1WJDSJIpvGpO4SvRetDWnQOcPwYqxQE0pc0cldIdbZeqDYrBGkHKrRr8ulKAkw4 c2ie6UFWpXw1yfwOOz9ITY/wl/z5pGNcEB7BCc9qW4eZarXj/3ztKzCCBjQwggQcoAMCAQICAR4w DQYJKoZIhvcNAQEFBQAwfTELMAkGA1UEBhMCSUwxFjAUBgNVBAoTDVN0YXJ0Q29tIEx0ZC4xKzAp BgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNpZ25pbmcxKTAnBgNVBAMTIFN0YXJ0 Q29tIENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTA3MTAyNDIxMDE1NVoXDTE3MTAyNDIxMDE1 NVowgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQKEw1TdGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1 cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWduaW5nMTgwNgYDVQQDEy9TdGFydENvbSBDbGFzcyAx IFByaW1hcnkgSW50ZXJtZWRpYXRlIENsaWVudCBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCC AQoCggEBAMcJg8zOLdgasSmkLhOrlr6KMoOMpohBllVHrdRvEg/q6r8jR+EK75xCGhR8ToREoqe7 zM9/UnC6TS2y9UKTpT1v7RSMzR0t6ndl0TWBuUr/UXBhPk+Kmy7bI4yW4urC+y7P3/1/X7U8ocb8 VpH/Clt+4iq7nirMcNh6qJR+xjOhV+VHzQMALuGYn5KZmc1NbJQYclsGkDxDz2UbFqE2+6vIZoL+ jb9x4Pa5gNf1TwSDkOkikZB1xtB4ZqtXThaABSONdfmv/Z1pua3FYxnCFmdr/+N2JLKutIxMYqQO Jebr/f/h5t95m4JgrM3Y/w7YX9d7YAL9jvN4SydHsU6n65cCAwEAAaOCAa0wggGpMA8GA1UdEwEB /wQFMAMBAf8wDgYDVR0PAQH/BAQDAgEGMB0GA1UdDgQWBBRTcu2SnODaywFcfH6WNU7y1LhRgjAf BgNVHSMEGDAWgBROC+8apEBbpRdphzDKNGhD0EGu8jBmBggrBgEFBQcBAQRaMFgwJwYIKwYBBQUH MAGGG2h0dHA6Ly9vY3NwLnN0YXJ0c3NsLmNvbS9jYTAtBggrBgEFBQcwAoYhaHR0cDovL3d3dy5z dGFydHNzbC5jb20vc2ZzY2EuY3J0MFsGA1UdHwRUMFIwJ6AloCOGIWh0dHA6Ly93d3cuc3RhcnRz c2wuY29tL3Nmc2NhLmNybDAnoCWgI4YhaHR0cDovL2NybC5zdGFydHNzbC5jb20vc2ZzY2EuY3Js MIGABgNVHSAEeTB3MHUGCysGAQQBgbU3AQIBMGYwLgYIKwYBBQUHAgEWImh0dHA6Ly93d3cuc3Rh cnRzc2wuY29tL3BvbGljeS5wZGYwNAYIKwYBBQUHAgEWKGh0dHA6Ly93d3cuc3RhcnRzc2wuY29t L2ludGVybWVkaWF0ZS5wZGYwDQYJKoZIhvcNAQEFBQADggIBAAqDCH14qywGXLhjjF6uHLkjd02h cdh9hrw+VUsv+q1eeQWB21jWj3kJ96AUlPCoEGZ/ynJNScWy6QMVQjbbMXltUfO4n4bGGdKo3awP Wp61tjAFgraLJgDk+DsSvUD6EowjMTNx25GQgyYJ5RPIzKKR9tQW8gGK+2+RHxkUCTbYFnL6kl8C h507rUdPPipJ9CgJFws3kDS3gOS5WFMxcjO5DwKfKSETEPrHh7p5shuuNktvsv6hxHTLhiMKX893 gxdT3XLS9OKmCv87vkINQcNEcIIoFWbP9HORz9v3vQwR4e3ksLc2JZOAFK+ssS5XMEoznzpihEP0 PLc4dCBYjbvSD7kxgDwZ+Aj8Q9PkbvE9sIPP7ON0fz095HdThKjiVJe6vofq+n6b1NBc8XdrQvBm unwxD5nvtTW4vtN6VY7mUCmxsCieuoBJ9OlqmsVWQvifIYf40dJPZkk9YgGTzWLpXDSfLSplbY2L L9C9U0ptvjcDjefLTvqSFc7tw1sEhF0n/qpA2r0GpvkLRDmcSwVyPvmjFBGqUp/pNy8ZuPGQmHwF i2/14+xeSUDG2bwnsYJQG2EdJCB6luQ57GEnTA/yKZSTKI8dDQa8Sd3zfXb19mOgSF0bBdXbuKhE puP9wirslFe6fQ1t5j5R0xi72MZ8ikMu1RQZKCyDbMwazlHiMYIDnzCCA5sCAQEwgZQwgYwxCzAJ BgNVBAYTAklMMRYwFAYDVQQKEw1TdGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRh bCBDZXJ0aWZpY2F0ZSBTaWduaW5nMTgwNgYDVQQDEy9TdGFydENvbSBDbGFzcyAxIFByaW1hcnkg SW50ZXJtZWRpYXRlIENsaWVudCBDQQIDDl3GMA0GCWCGSAFlAwQCAwUAoIIB2zAYBgkqhkiG9w0B CQMxCwYJKoZIhvcNAQcBMBwGCSqGSIb3DQEJBTEPFw0xNTEwMjUxNTE3MDlaME8GCSqGSIb3DQEJ BDFCBEBspTmg6Y1JyEKHJuAq6y4STFEFskwrIX+RoL4eYSRUkNeIxh5cAxcxpa7YkVJRTxDMKDps wrrx0pKpMfhDiUzZMIGlBgkrBgEEAYI3EAQxgZcwgZQwgYwxCzAJBgNVBAYTAklMMRYwFAYDVQQK Ew1TdGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZpY2F0ZSBTaWdu aW5nMTgwNgYDVQQDEy9TdGFydENvbSBDbGFzcyAxIFByaW1hcnkgSW50ZXJtZWRpYXRlIENsaWVu dCBDQQIDDl3GMIGnBgsqhkiG9w0BCRACCzGBl6CBlDCBjDELMAkGA1UEBhMCSUwxFjAUBgNVBAoT DVN0YXJ0Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNpZ25p bmcxODA2BgNVBAMTL1N0YXJ0Q29tIENsYXNzIDEgUHJpbWFyeSBJbnRlcm1lZGlhdGUgQ2xpZW50 IENBAgMOXcYwDQYJKoZIhvcNAQEBBQAEggEAtmsz59d7y5fv+hptuNRFNfNUZtVXu62yNLTfuGTI xSG7/WrP2EEMFu2XDo7Bm90BFbHHrImdgLTD2GF3p1fQXn/2RzvQztdwNYCtBEiTn5SordyvCnkr DNct0o1ty8Gu0ecs9SS5NrsK8PEj7rYRkltVi/qUe8T6l+KFSdbxoE9VZh1E0+qS4eBBDTKcKxib upPoB08h7tdwMJgNBHg/IcHE8vRtef1mVprqY+7OAMonqCgYoR0dm8rvCYQcVzlvE0SRenX+H9DT X9gg85Fr5Zq4TQcEFolWcw7rOwOUVfwPzM5KdIDLw8fRlCs5PUbnMcyuNoY69L6VkS0kw8EXNQAA AAAAAA== --=-dLn045AnTZPWCf+tGsvD--