Instala o Fail2band. Nele vc pode bloquear um IP se ele tentar se autenticar no seu servidor por mais de 3 vezes, por exemplo.<br>Adotei o Fail2band, senhas fortes, usuários que não sejam o numero do ramal e praticamente meus problemas terminaram.<br>
<br><div class="gmail_quote">Em 17 de abril de 2012 22:14, MarcosEduardo Cara anches <span dir="ltr"><<a href="mailto:marcos@webe.in">marcos@webe.in</a>></span> escreveu:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="PT-BR">
<div>
<p class="MsoNormal">Sou novato, como posso bloquear este tipo de invasão,
são ligações para exterior com tarifas que custam 29,00 reais
minuto, já bloqueei na operadora ligações internacionais, mas como loqueio este
tipo de entradas. Ficarei muito <span style>agradecido pela
ajuda</span>.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<div align="center">
<table style="width:100.0%;border:none;border-top:solid #9e9e9e 1.0pt" border="1" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[3041] netsock2.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">== Using SIP RTP TOS bits 184<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[3041] netsock2.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">== Using SIP RTP CoS mark 5<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[16577] pbx.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">-- Executing [09410901001272@from-sip-external:1]
NoOp("SIP/</span><b><span style="font-size:14.0pt;font-family:"Courier New";color:red" lang="EN-US">87.106.102.28</span></b><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">-0000048f",
"Received incoming SIP connection from unknown peer to
09410901001272") in new stack<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[16577] pbx.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">-- Executing [09410901001272@from-sip-external:2] Set("SIP/</span><b><span style="font-size:14.0pt;font-family:"Courier New";color:red" lang="EN-US">87.106.102.28</span></b><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">-0000048f",
"DID=09410901001272") in new stack<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[16577] pbx.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">-- Executing [09410901001272@from-sip-external:3]
Goto("SIP/87.106.102.28-0000048f", "s,1") in new stack<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[16577] pbx.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">-- Goto (from-sip-external,s,1)<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[16577] pbx.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">-- Executing [s@from-sip-external:1]
GotoIf("SIP/87.106.102.28-0000048f",
"0?checklang:noanonymous") in new stack<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[16577] pbx.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">-- Goto (from-sip-external,s,5)<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[16577] pbx.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">-- Executing [s@from-sip-external:5]
Set("SIP/87.106.102.28-0000048f", "TIMEOUT(absolute)=15")
in new stack<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:#f2f2f2;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:#f2f2f2;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:#f2f2f2;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[16577] func_timeout.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:#f2f2f2;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">Channel will hangup at 2012-04-12 06:12:24.193 BRT.<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[16577] pbx.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">-- Executing [s@from-sip-external:6]
Answer("SIP/87.106.102.28-0000048f", "") in new stack<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[3041] netsock2.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">== Using SIP RTP TOS bits 184<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[3041] netsock2.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #eeeeee 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">== Using SIP RTP CoS mark 5<u></u><u></u></span></p>
</td>
</tr>
<tr>
<td style="border:none;border-bottom:solid #aaaaaa 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">Apr 12 06:12:09<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #aaaaaa 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">VERBOSE<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #aaaaaa 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Verdana","sans-serif"">[16578] pbx.c:<u></u><u></u></span></p>
</td>
<td style="border:none;border-bottom:solid #aaaaaa 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"" lang="EN-US">-- Executing [00441212790976@from-sip-external:1]
NoOp("SIP/87.106.102.28-00000490", "Received incoming SIP
connection from unknown peer to 00441212790976") in new stack<u></u><u></u></span></p>
</td>
</tr>
</tbody></table>
</div>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal">Marcos Eduardo Cara Sanches<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
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