Re: DOS

[magalhaes <magalhaes () INTIME-NET COM BR>]

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