Date: Wed, 10 Jan 2007 15:53:14 +0100 From: =?windows-1252?Q?Nejc_=8Akoberne?= <nejc@skoberne.net> To: questions@freebsd.org Subject: Simple DoS Message-ID: <45A4FDDA.8040909@skoberne.net>
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This is a cryptographically signed message in MIME format. --------------ms030706060001020402080101 Content-Type: multipart/mixed; boundary="------------000509080603040806050006" This is a multi-part message in MIME format. --------------000509080603040806050006 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Hello, yesterday one of our clients did something interesting (stupid): they connected both ends of an UTP cable to the same switch, to which our FreeBSD server was also connected. The server was immediately completely unresponsive from yesterday evening until this morning, when our tech guy went there to see what the problem was. Even when they rebooted the FreeBSD machine, it wouldn't boot normally - disk I/O was very busy and everything was happening unusably slow. After the disconnect from that switch, everything went back to normal. Any ideas how to prevent such situations in the future? (I would like to do it on the server side, not on the "user side".) Thanks, Nejc --------------000509080603040806050006-- --------------ms030706060001020402080101 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIILJDCC BY4wggR2oAMCAQICBDs9SfgwDQYJKoZIhvcNAQEFBQAwPTELMAkGA1UEBhMCc2kxGzAZBgNV BAoTEnN0YXRlLWluc3RpdHV0aW9uczERMA8GA1UECxMIc2lnZW4tY2EwHhcNMDMwOTIzMjAy MzA0WhcNMDgwOTIzMjA1MzA0WjCBgTELMAkGA1UEBhMCc2kxGzAZBgNVBAoTEnN0YXRlLWlu c3RpdHV0aW9uczERMA8GA1UECxMIc2lnZW4tY2ExFDASBgNVBAsTC2luZGl2aWR1YWxzMSww FAYDVQQDEw1ORUpDIFNLT0JFUk5FMBQGA1UEBRMNMjQ1NzExMzMxMjAxNDCBnzANBgkqhkiG 9w0BAQEFAAOBjQAwgYkCgYEA0LYrr3KrEMlye3H9j8KGvFx66+btGh7I/XXA/Pmog4+HMqqq MZZNmfbkKfC3D6NdXroteJSAwxoO3BU0HuCzyjHeaaZ63ayz7OAbYY3rwTN9rWTkRTAoghLk eA+R+0GA5gEbdudT4eV0vmYsfmKkpnnsQ+u13R9IgWPFT6zWoucCAwEAAaOCAtMwggLPMAsG 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