Security Incidents mailing list archives
Re: DOS
From: magalhaes <magalhaes () INTIME-NET COM BR>
Date: Thu, 22 Feb 2001 19:06:41 -0300
Do you have any Firewall ? If yes , its just block all ports , less those that you use ( off course ) . -----Mensagem original----- De: Silveira, Anderson <ande.ig () IG COM BR> Para: INCIDENTS () SECURITYFOCUS COM <INCIDENTS () SECURITYFOCUS COM> Data: Quarta-feira, 21 de Fevereiro de 2001 18:53 Assunto: DOS
Hello, Some machines on our network are being attacked frequently with this kind of flood Can somebody help me how to avoid it? Feb 20 00:12:59 bufren iplog[107]: TCP: port 267 connection attempt from 96.35.224.33:51183 Feb 20 00:12:59 bufren iplog[107]: TCP: port 269 connection attempt from 148.216.249.68:55072 Feb 20 00:12:59 bufren iplog[107]: TCP: port 270 connection attempt from 46.179.134.86:24249 Feb 20 00:12:59 bufren iplog[107]: TCP: port 274 connection attempt from 150.29.186.28:32027 Feb 20 00:12:59 bufren iplog[107]: TCP: port 279 connection attempt from 152.98.122.116:8981 Feb 20 00:12:59 bufren iplog[107]: TCP: port 281 connection attempt from 204.23.148.23:12870 Feb 20 00:12:59 bufren iplog[107]: TCP: port 275 connection attempt from 48.248.70.46:1203 Feb 20 00:12:59 bufren iplog[107]: TCP: port 277 connection attempt from 100.173.96.81:5092 Feb 20 00:12:59 bufren iplog[107]: TCP: port 272 connection attempt from 98.104.160.121:28138 Feb 20 00:12:59 bufren iplog[107]: TCP: port 276 connection attempt from 202.210.211.63:35916 Feb 20 00:12:59 bufren iplog[107]: TCP: port 284 connection attempt from 154.167.58.76:51472 Feb 20 00:12:59 bufren iplog[107]: TCP: port 285 connection attempt from 52.130.199.93:20648 Feb 20 00:12:59 bufren iplog[107]: TCP: port 286 connection attempt from 206.92.84.111:55361 And it goes until port 37000 and above, allways from a different ip number ----------------------------------------- Anderson Silveira Electrical Engineer - Security Officer ----------------------------------------- Knowledge is power - We are what we think _________________________________________________________ Oi! Você quer um iG-mail gratuito? Então clique aqui: http://www.ig.com.br/paginas/assineigmail.html