From mboxrd@z Thu Jan 1 00:00:00 1970 From: Giles Coochey Subject: Re: Blocking certain IP from accessing a specific port Date: Fri, 28 Jan 2011 14:36:00 +0100 Message-ID: <4D42C640.4060702@coochey.net> References: Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms080003000309030003050709" Return-path: In-Reply-To: Sender: netfilter-owner@vger.kernel.org List-ID: To: Grozdan Cc: netfilter@vger.kernel.org This is a cryptographically signed message in MIME format. --------------ms080003000309030003050709 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable On 28/01/2011 14:32, Grozdan wrote: > Hi, > > Very basic question due to a brain fart I'm having at the moment > (really tired as well), but if I want to block a certain IP address > from accessing a specific port on my server, would I be using --dport > or --sport on the INPUT chain? > > Thanks :) > -- > To unsubscribe from this list: send the line "unsubscribe netfilter" in= > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html --dport --=20 Best Regards, Giles Coochey NetSecSpec Ltd NL T-Systems Mobile: +31 681 265 086 NL Mobile: +31 626 508 131 GIB Mobile: +350 5401 6693 Email/MSN/Live Messenger: giles@coochey.net Skype: gilescoochey --------------ms080003000309030003050709 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIPdjCC BIowggNyoAMCAQICECf06hH0eobEbp27bqkXBwcwDQYJKoZIhvcNAQEFBQAwbzELMAkGA1UE BhMCU0UxFDASBgNVBAoTC0FkZFRydXN0IEFCMSYwJAYDVQQLEx1BZGRUcnVzdCBFeHRlcm5h bCBUVFAgTmV0d29yazEiMCAGA1UEAxMZQWRkVHJ1c3QgRXh0ZXJuYWwgQ0EgUm9vdDAeFw0w NTA2MDcwODA5MTBaFw0yMDA1MzAxMDQ4MzhaMIGuMQswCQYDVQQGEwJVUzELMAkGA1UECBMC VVQxFzAVBgNVBAcTDlNhbHQgTGFrZSBDaXR5MR4wHAYDVQQKExVUaGUgVVNFUlRSVVNUIE5l dHdvcmsxITAfBgNVBAsTGGh0dHA6Ly93d3cudXNlcnRydXN0LmNvbTE2MDQGA1UEAxMtVVRO LVVTRVJGaXJzdC1DbGllbnQgQXV0aGVudGljYXRpb24gYW5kIEVtYWlsMIIBIjANBgkqhkiG 9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsjmFpPJ9q0E7YkY3rs3BYHW8OWX5ShpHornMSMxqmNVN NRm5pELlzkniii8efNIxB8dOtINknS4p1aJkxIW9hVE1eaROaJB7HHqkkqgX8pgV8pPMyaQy lbsMTzC9mKALi+VuG6JG+ni8om+rWV6lL8/K2m2qL+usobNqqrcuZzWLeeEeaYji5kbNoKXq vgvOdjp6Dpvq/NonWz1zHyLmSGHGTPNpsaguG7bUMSAsvIKKjqQOpdeJQ/wWWq8dcdcRWdq6 hw2v+vPhwvCkxWeM1tZUOt4KpLoDd7NlyP0e03RiqhjKaJMeoYV+9Udly/hNVyh00jT/MLbu 9mIwFIws6wIDAQABo4HhMIHeMB8GA1UdIwQYMBaAFK29mHo0tCb3+sQmVO8DveAky1QaMB0G A1UdDgQWBBSJgmd9xJ0mcABLtFBIfN49rgRufTAOBgNVHQ8BAf8EBAMCAQYwDwYDVR0TAQH/ BAUwAwEB/zB7BgNVHR8EdDByMDigNqA0hjJodHRwOi8vY3JsLmNvbW9kb2NhLmNvbS9BZGRU cnVzdEV4dGVybmFsQ0FSb290LmNybDA2oDSgMoYwaHR0cDovL2NybC5jb21vZG8ubmV0L0Fk ZFRydXN0RXh0ZXJuYWxDQVJvb3QuY3JsMA0GCSqGSIb3DQEBBQUAA4IBAQAZ2IkRbyispgCi 54fBm5AD236hEv0e8+LwAamUVEJrmgnEoG3XkJIEA2Z5Q3H8+G+v23ZF4jcaPd3kWQR4rBz0 g0bzes9bhHIt5UbBuhgRKfPLSXmHPLptBZ2kbWhPrXIUNqi5sf2/z3/wpGqUNVCPz4FtVbHd WTBK322gnGQfSXzvNrv042n0+DmPWq1LhTq3Du3Tzw1EovsEv+QvcI4l+1pUBrPQxLxtjftz Mizpm4QkLdZ/kXpoAlAfDj9N6cz1u2fo3BwuO/xOzf4CjuOoEwqlJkRl6RDyTVKnrtw+ymsy XEFs/vVdoOr/0fqbhlhtPZZH5f4ulQTCAMyOofK7MIIFcDCCBFigAwIBAgIQO65j2DnDlPzM SJXaXTR0YjANBgkqhkiG9w0BAQUFADCBrjELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAlVUMRcw FQYDVQQHEw5TYWx0IExha2UgQ2l0eTEeMBwGA1UEChMVVGhlIFVTRVJUUlVTVCBOZXR3b3Jr MSEwHwYDVQQLExhodHRwOi8vd3d3LnVzZXJ0cnVzdC5jb20xNjA0BgNVBAMTLVVUTi1VU0VS Rmlyc3QtQ2xpZW50IEF1dGhlbnRpY2F0aW9uIGFuZCBFbWFpbDAeFw0xMDEwMTQwMDAwMDBa Fw0xMTEwMTQyMzU5NTlaMCIxIDAeBgkqhkiG9w0BCQEWEWdpbGVzQGNvb2NoZXkubmV0MIIB IjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnEfShIvQWyy4AujOORPKowIgIbqFDVT+ tphbbz8UQ4Ndh8wq0u/Rqp0EHvJw4ZTFUjzbSPrtrvyrkkj2Vmwigfy/hdz3tX7YHjEJYvd2 5lO/MBioYmG9Kwb6RS+XWjoT3hiO7iDMTLtvwSeYkDFv8tpTjNuKi3yIU7cLC0NQ+7DXl5Fo rP+BbcHPGRgEsQGvH89JOkshlyT0YvKJydwKBbGlag4h/VDRznauPDJJl6usnyyLUD2byvYY azUEAgUrrHRsaAUELH8yPGbQUC0MEgyhC+3aLl7qCXvB2JKBCZjBEz9dQ9DEQf7opV1tlKLD qcl9ve2+2GF7OyxzvgzrewIDAQABo4ICEzCCAg8wHwYDVR0jBBgwFoAUiYJnfcSdJnAAS7RQ SHzePa4Ebn0wHQYDVR0OBBYEFNzIQP5P3sjDYNUkLmRKk2xVYwJEMA4GA1UdDwEB/wQEAwIF oDAMBgNVHRMBAf8EAjAAMCAGA1UdJQQZMBcGCCsGAQUFBwMEBgsrBgEEAbIxAQMFAjARBglg hkgBhvhCAQEEBAMCBSAwRgYDVR0gBD8wPTA7BgwrBgEEAbIxAQIBAQEwKzApBggrBgEFBQcC ARYdaHR0cHM6Ly9zZWN1cmUuY29tb2RvLm5ldC9DUFMwgaUGA1UdHwSBnTCBmjBMoEqgSIZG aHR0cDovL2NybC5jb21vZG9jYS5jb20vVVROLVVTRVJGaXJzdC1DbGllbnRBdXRoZW50aWNh dGlvbmFuZEVtYWlsLmNybDBKoEigRoZEaHR0cDovL2NybC5jb21vZG8ubmV0L1VUTi1VU0VS Rmlyc3QtQ2xpZW50QXV0aGVudGljYXRpb25hbmRFbWFpbC5jcmwwbAYIKwYBBQUHAQEEYDBe MDYGCCsGAQUFBzAChipodHRwOi8vY3J0LmNvbW9kb2NhLmNvbS9VVE5BQUFDbGllbnRDQS5j cnQwJAYIKwYBBQUHMAGGGGh0dHA6Ly9vY3NwLmNvbW9kb2NhLmNvbTAcBgNVHREEFTATgRFn aWxlc0Bjb29jaGV5Lm5ldDANBgkqhkiG9w0BAQUFAAOCAQEAkgncYO0fVM5mTDtsFLNgeEQU tfupHDPpwjnvDtQAcCOTPOmvbNs3Cct9u85R5T1HUFlJ9bZMfAUwi1EVQf44SUMrFfR/uyH5 Qhe+TEIkHGA6/82Cl1pOcw0ugVF0IDt4jIX+RMoh2izp+VtCXyvzC7Sk9oM4LmMaAToSTjnb J774U0tY3lgYt8vSCaqjbaPo2vAsekZ82h36T+FVI03PBacxItsm1WmRRCoAXHCFVKVF1ArT hOKXcxvsuEiOXsRmy09b4N1ztVaOpaCareyGbW/Cp3ObpKcrldtvzE4blwAQOY9zOYbgszS4 Pmps83QjO9WETrH3t8WHYUGsPIAvwjCCBXAwggRYoAMCAQICEDuuY9g5w5T8zEiV2l00dGIw DQYJKoZIhvcNAQEFBQAwga4xCzAJBgNVBAYTAlVTMQswCQYDVQQIEwJVVDEXMBUGA1UEBxMO U2FsdCBMYWtlIENpdHkxHjAcBgNVBAoTFVRoZSBVU0VSVFJVU1QgTmV0d29yazEhMB8GA1UE CxMYaHR0cDovL3d3dy51c2VydHJ1c3QuY29tMTYwNAYDVQQDEy1VVE4tVVNFUkZpcnN0LUNs aWVudCBBdXRoZW50aWNhdGlvbiBhbmQgRW1haWwwHhcNMTAxMDE0MDAwMDAwWhcNMTExMDE0 MjM1OTU5WjAiMSAwHgYJKoZIhvcNAQkBFhFnaWxlc0Bjb29jaGV5Lm5ldDCCASIwDQYJKoZI hvcNAQEBBQADggEPADCCAQoCggEBAJxH0oSL0FssuALozjkTyqMCICG6hQ1U/raYW28/FEOD XYfMKtLv0aqdBB7ycOGUxVI820j67a78q5JI9lZsIoH8v4Xc97V+2B4xCWL3duZTvzAYqGJh vSsG+kUvl1o6E94Yju4gzEy7b8EnmJAxb/LaU4zbiot8iFO3CwtDUPuw15eRaKz/gW3BzxkY BLEBrx/PSTpLIZck9GLyicncCgWxpWoOIf1Q0c52rjwySZerrJ8si1A9m8r2GGs1BAIFK6x0 bGgFBCx/Mjxm0FAtDBIMoQvt2i5e6gl7wdiSgQmYwRM/XUPQxEH+6KVdbZSiw6nJfb3tvthh ezssc74M63sCAwEAAaOCAhMwggIPMB8GA1UdIwQYMBaAFImCZ33EnSZwAEu0UEh83j2uBG59 MB0GA1UdDgQWBBTcyED+T97Iw2DVJC5kSpNsVWMCRDAOBgNVHQ8BAf8EBAMCBaAwDAYDVR0T AQH/BAIwADAgBgNVHSUEGTAXBggrBgEFBQcDBAYLKwYBBAGyMQEDBQIwEQYJYIZIAYb4QgEB BAQDAgUgMEYGA1UdIAQ/MD0wOwYMKwYBBAGyMQECAQEBMCswKQYIKwYBBQUHAgEWHWh0dHBz Oi8vc2VjdXJlLmNvbW9kby5uZXQvQ1BTMIGlBgNVHR8EgZ0wgZowTKBKoEiGRmh0dHA6Ly9j cmwuY29tb2RvY2EuY29tL1VUTi1VU0VSRmlyc3QtQ2xpZW50QXV0aGVudGljYXRpb25hbmRF bWFpbC5jcmwwSqBIoEaGRGh0dHA6Ly9jcmwuY29tb2RvLm5ldC9VVE4tVVNFUkZpcnN0LUNs aWVudEF1dGhlbnRpY2F0aW9uYW5kRW1haWwuY3JsMGwGCCsGAQUFBwEBBGAwXjA2BggrBgEF BQcwAoYqaHR0cDovL2NydC5jb21vZG9jYS5jb20vVVROQUFBQ2xpZW50Q0EuY3J0MCQGCCsG AQUFBzABhhhodHRwOi8vb2NzcC5jb21vZG9jYS5jb20wHAYDVR0RBBUwE4ERZ2lsZXNAY29v Y2hleS5uZXQwDQYJKoZIhvcNAQEFBQADggEBAJIJ3GDtH1TOZkw7bBSzYHhEFLX7qRwz6cI5 7w7UAHAjkzzpr2zbNwnLfbvOUeU9R1BZSfW2THwFMItRFUH+OElDKxX0f7sh+UIXvkxCJBxg Ov/NgpdaTnMNLoFRdCA7eIyF/kTKIdos6flbQl8r8wu0pPaDOC5jGgE6Ek452ye++FNLWN5Y GLfL0gmqo22j6NrwLHpGfNod+k/hVSNNzwWnMSLbJtVpkUQqAFxwhVSlRdQK04Til3Mb7LhI jl7EZstPW+Ddc7VWjqWgmq3shm1vwqdzm6SnK5Xbb8xOG5cAEDmPczmG4LM0uD5qbPN0IzvV hE6x97fFh2FBrDyAL8IxggRdMIIEWQIBATCBwzCBrjELMAkGA1UEBhMCVVMxCzAJBgNVBAgT AlVUMRcwFQYDVQQHEw5TYWx0IExha2UgQ2l0eTEeMBwGA1UEChMVVGhlIFVTRVJUUlVTVCBO ZXR3b3JrMSEwHwYDVQQLExhodHRwOi8vd3d3LnVzZXJ0cnVzdC5jb20xNjA0BgNVBAMTLVVU Ti1VU0VSRmlyc3QtQ2xpZW50IEF1dGhlbnRpY2F0aW9uIGFuZCBFbWFpbAIQO65j2DnDlPzM SJXaXTR0YjAJBgUrDgMCGgUAoIICbjAYBgkqhkiG9w0BCQMxCwYJKoZIhvcNAQcBMBwGCSqG SIb3DQEJBTEPFw0xMTAxMjgxMzM2MDBaMCMGCSqGSIb3DQEJBDEWBBSWWfvi8SuQ5h/7OB1U sjw3Fwa9ADBfBgkqhkiG9w0BCQ8xUjBQMAsGCWCGSAFlAwQBAjAKBggqhkiG9w0DBzAOBggq hkiG9w0DAgICAIAwDQYIKoZIhvcNAwICAUAwBwYFKw4DAgcwDQYIKoZIhvcNAwICASgwgdQG CSsGAQQBgjcQBDGBxjCBwzCBrjELMAkGA1UEBhMCVVMxCzAJBgNVBAgTAlVUMRcwFQYDVQQH Ew5TYWx0IExha2UgQ2l0eTEeMBwGA1UEChMVVGhlIFVTRVJUUlVTVCBOZXR3b3JrMSEwHwYD VQQLExhodHRwOi8vd3d3LnVzZXJ0cnVzdC5jb20xNjA0BgNVBAMTLVVUTi1VU0VSRmlyc3Qt Q2xpZW50IEF1dGhlbnRpY2F0aW9uIGFuZCBFbWFpbAIQO65j2DnDlPzMSJXaXTR0YjCB1gYL KoZIhvcNAQkQAgsxgcaggcMwga4xCzAJBgNVBAYTAlVTMQswCQYDVQQIEwJVVDEXMBUGA1UE BxMOU2FsdCBMYWtlIENpdHkxHjAcBgNVBAoTFVRoZSBVU0VSVFJVU1QgTmV0d29yazEhMB8G A1UECxMYaHR0cDovL3d3dy51c2VydHJ1c3QuY29tMTYwNAYDVQQDEy1VVE4tVVNFUkZpcnN0 LUNsaWVudCBBdXRoZW50aWNhdGlvbiBhbmQgRW1haWwCEDuuY9g5w5T8zEiV2l00dGIwDQYJ KoZIhvcNAQEBBQAEggEAD73oJX0WMh7NcW6au3mlwNwabUnpqucTd1C2J7ftOCbA8b8roPt2 mgeLxHRaiF6aCtP+/q80b7T4kGZqkLW8rWqa/smlBaG3D8VvfQc0QkvqU6ZWBXMS4SUOckeq JVUdNPoJE9vk5LwRyzrK5plzL/0MEFgCuOGMRfU8pKMq3cf5Sd9aiqayEktxrZFSls+5IKgl Tf/0M0pxBpkaM0TRaD9xT28fc9jBndRRx1B2KOGehCoBZ4ibqD9NhZ7tqMDgyRa8Zhxbi8Gs gm/MEDX8Sk4BTFuiyG2vl0rtn6OYutwGo2AYjEX/8VOWGoP34n5wE9yeo4icXyZS3F/9eqRy ngAAAAAAAA== --------------ms080003000309030003050709--