[AsteriskBrasil] RES: Intruso no Asterisk

Julio Arruda jarruda-asterisk em jarruda.com
Terça Novembro 24 10:44:44 BRST 2009 

Rafael Alves Machado wrote:
> Não existe um patch de atualização para Este problema? Pois passei pelo
> mesmo problema e o prejuízo foi alto.
> 

Humm...nao sei se voce entendeu, mas isto nao e' um bug. O ponto e', se 
voce permite  um SIP UA qualquer falar com o seu * sem estar registrado, 
e mandar chamadas, e' configuracao....
Existe uma quantidade grande de brute-force tambem, onde tentam achar 
combinacoes usuario/senha que podem mandar chamadas via seu asterisk....

> 
> Rafael
> 
> -----Mensagem original-----
> De: asteriskbrasil-bounces em listas.asteriskbrasil.org
> [mailto:asteriskbrasil-bounces em listas.asteriskbrasil.org] Em nome de Felipe
> R. Pasa
> Enviada em: segunda-feira, 23 de novembro de 2009 22:04
> Para: asteriskbrasil em listas.asteriskbrasil.org
> Assunto: Re: [AsteriskBrasil] Intruso no Asterisk
> 
> Alexandre,
> 
>  no seu sip.conf, voce pode habilitar o parametro allowguest=yes e na
> conta do [guest] coloca um contexto que alcance somente os seus ramais
> internos,ou algum que nao exista, neste caso o seu invasor no máximo
> liga para o seu ramal e inclusive voce pode até trocar umas
> palavrinhas com o intruso! :)
> 
> At.!
> 
> 2009/11/23 Alexandre Ricardo Souza Silva <alexandre em componentizar.com.br>:
>> Salve Galera!
>>
>>
>>                 Preciso de help de todos, estava verificando o log do meu
>> asterisk e notei que tenho uns 48 registro assim (  Sip/113.105.152.56
>> asterisk asterisk) , pelo que verifiquei na Net isso é tentativa de
> intruso,
>> só que esse ip tentou ligar para alguns lugares , mas sem sucesso pelo que
>> vi , todas as tentativas não passou de 16 segundos, essas 48 tentativas
> sao
>> desde mes 08 , hoje por exemplo não tive este ataque, eles estao tentando
> a
>> cada 4 dias...
>>
>>                Qual o patch q tenho que aplicar no *  para manter mais
>> seguro?
>>
>> ***Log
>> Nov 14 01:22:19] VERBOSE[21171] logger.c:     -- Executing
>> [011441616604001 em from-sip-external:1] NoOp("SIP/113.105.152.56-b2e04818",
>> "Received incoming SIP connection from unknown peer to 011441616604001")
> in
>> new stack
>> [Nov 14 01:22:19] VERBOSE[21171] logger.c:     -- Executing
>> [011441616604001 em from-sip-external:2] Set("SIP/113.105.152.56-b2e04818",
>> "DID=011441616604001") in new stack
>> [Nov 14 01:22:19] VERBOSE[21171] logger.c:     -- Executing
>> [011441616604001 em from-sip-external:3] Goto("SIP/113.105.152.56-b2e04818",
>> "s|1") in new stack
>> [Nov 14 01:22:19] VERBOSE[21171] logger.c:     -- Executing
>> [s em from-sip-external:1] GotoIf("SIP/113.105.152.56-b2e04818",
>> "0?from-trunk|011441616604001|1") in new stack
>> [Nov 14 01:22:19] VERBOSE[21171] logger.c:     -- Executing
>> [s em from-sip-external:2] Set("SIP/113.105.152.56-b2e04818",
>> "TIMEOUT(absolute)=15") in new stack
>> [Nov 14 01:22:19] VERBOSE[21171] logger.c:     -- Executing
>> [s em from-sip-external:3] Answer("SIP/113.105.152.56-b2e04818", "") in new
>> stack
>> [Nov 14 01:22:19] VERBOSE[21171] logger.c:     -- Executing
>> [s em from-sip-external:4] Wait("SIP/113.105.152.56-b2e04818", "2") in new
>> stack
>> [Nov 14 01:22:21] VERBOSE[21170] logger.c:     -- Executing
>> [s em from-sip-external:5] Playback("SIP/113.105.152.56-b2e08a38",
>> "ss-noservice") in new stack
>> [Nov 14 01:22:21] VERBOSE[21171] logger.c:     -- Executing
>> [s em from-sip-external:5] Playback("SIP/113.105.152.56-b2e04818",
>> "ss-noservice") in new stack
>> [Nov 14 01:22:21] VERBOSE[21170] logger.c:     --
>> <SIP/113.105.152.56-b2e08a38> Playing 'ss-noservice' (language 'en')
>> [Nov 14 01:22:21] VERBOSE[21171] logger.c:     --
>> <SIP/113.105.152.56-b2e04818> Playing 'ss-noservice' (language 'en')
>> [Nov 14 01:22:28] VERBOSE[21170] logger.c:     -- Executing
>> [s em from-sip-external:6] PlayTones("SIP/113.105.152.56-b2e08a38",
>> "congestion") in new stack
>> [Nov 14 01:22:28] VERBOSE[21170] logger.c:     -- Executing
>> [s em from-sip-external:7] Congestion("SIP/113.105.152.56-b2e08a38", "5") in
>> new stack
>> [Nov 14 01:22:28] VERBOSE[21171] logger.c:     -- Executing
>> [s em from-sip-external:6] PlayTones("SIP/113.105.152.56-b2e04818",
>> "congestion") in new stack
>> [Nov 14 01:22:28] VERBOSE[21171] logger.c:     -- Executing
>> [s em from-sip-external:7] Congestion("SIP/113.105.152.56-b2e04818", "5") in
>> new stack
>> [Nov 14 01:22:34] VERBOSE[21170] logger.c:   == Spawn extension
>> (from-sip-external, s, 7) exited non-zero on 'SIP/113.105.152.56-b2e08a38'
>> [Nov 14 01:22:34] VERBOSE[21170] logger.c:     -- Executing
>> [T em from-sip-external:1] NoOp("SIP/113.105.152.56-b2e08a38", "Received
>> incoming SIP connection from unknown peer to T") in new stack
>> [Nov 14 01:22:34] VERBOSE[21170] logger.c:     -- Executing
>> [T em from-sip-external:2] Set("SIP/113.105.152.56-b2e08a38", "DID=s") in new
>> stack
>> [Nov 14 01:22:34] VERBOSE[21170] logger.c:     -- Executing
>> [T em from-sip-external:3] Goto("SIP/113.105.152.56-b2e08a38", "s|1") in new
>> stack
>> [Nov 14 01:22:34] VERBOSE[21170] logger.c:     -- Executing
>> [s em from-sip-external:1] GotoIf("SIP/113.105.152.56-b2e08a38",
>> "0?from-trunk|s|1") in new stack
>> [Nov 14 01:22:34] VERBOSE[21170] logger.c:     -- Executing
>> [s em from-sip-external:2] Set("SIP/113.105.152.56-b2e08a38",
>> "TIMEOUT(absolute)=15") in new stack
>> [Nov 14 01:22:34] VERBOSE[21170] logger.c:     -- Executing
>> [s em from-sip-external:3] Answer("SIP/113.105.152.56-b2e08a38", "") in new
>> stack
>> [Nov 14 01:22:34] VERBOSE[21170] logger.c:     -- Executing
>> [s em from-sip-external:4] Wait("SIP/113.105.152.56-b2e08a38", "2") in new
>> stack
>> [Nov 14 01:22:34] VERBOSE[21171] logger.c:   == Spawn extension
>> (from-sip-external, s, 7) exited non-zero on 'SIP/113.105.152.56-b2e04818'
>> [Nov 14 01:22:34] VERBOSE[21171] logger.c:     -- Executing
>> [T em from-sip-external:1] NoOp("SIP/113.105.152.56-b2e04818", "Received
>> incoming SIP connection from unknown peer to T") in new stack
>> [Nov 14 01:22:34] VERBOSE[21171] logger.c:     -- Executing
>> [T em from-sip-external:2] Set("SIP/113.105.152.56-b2e04818", "DID=s") in new
>> stack
>> [Nov 20 15:23:17] VERBOSE[6506] logger.c:     -- Executing
>> [s em from-sip-external:1] GotoIf("SIP/113.105.152.56-b3702a48",
>> "0?from-trunk|s|1") in new stack
>> [Nov 20 15:23:17] VERBOSE[6506] logger.c:     -- Executing
>> [s em from-sip-external:2] Set("SIP/113.105.152.56-b3702a48",
>> "TIMEOUT(absolute)=15") in new stack
>> [Nov 20 15:23:17] VERBOSE[6506] logger.c:     -- Executing
>> [s em from-sip-external:3] Answer("SIP/113.105.152.56-b3702a48", "") in new
>> stack
>> [Nov 20 15:23:17] VERBOSE[6506] logger.c:   == Spawn extension
>> (from-sip-external, s, 3) exited non-zero on 'SIP/113.105.152.56-b3702a48'
>> [Nov 20 17:05:38] VERBOSE[25061] logger.c:     -- Executing
>> [00#441616604001 em from-sip-external:1] NoOp("SIP/113.105.152.56-b37009f8",
>> "Received incoming SIP connection from unknown peer to 00#441616604001")
> in
>> new stack
>> [Nov 20 17:05:38] VERBOSE[25061] logger.c:     -- Executing
>> [00#441616604001 em from-sip-external:2] Set("SIP/113.105.152.56-b37009f8",
>> "DID=00#441616604001") in new stack
>> [Nov 20 17:05:38] VERBOSE[25061] logger.c:     -- Executing
>> [00#441616604001 em from-sip-external:3] Goto("SIP/113.105.152.56-b37009f8",
>> "s|1") in new stack
>> [Nov 20 17:05:38] VERBOSE[25061] logger.c:     -- Executing
>> [s em from-sip-external:1] GotoIf("SIP/113.105.152.56-b37009f8",
>> "0?from-trunk|00#441616604001|1") in new stack
>> [Nov 20 17:05:38] VERBOSE[25061] logger.c:     -- Executing
>> [s em from-sip-external:2] Set("SIP/113.105.152.56-b37009f8",
>> "TIMEOUT(absolute)=15") in new stack
>> [Nov 20 17:05:38] VERBOSE[25061] logger.c:     -- Executing
>> [s em from-sip-external:3] Answer("SIP/113.105.152.56-b37009f8", "") in new
>> stack
>> [Nov 20 17:05:38] VERBOSE[25061] logger.c:     -- Executing
>> [s em from-sip-external:4] Wait("SIP/113.105.152.56-b37009f8", "2") in new
>> stack
>> [Nov 20 17:05:40] VERBOSE[25061] logger.c:     -- Executing
>> [s em from-sip-external:5] Playback("SIP/113.105.152.56-b37009f8",
>> "ss-noservice") in new stack
>> [Nov 20 17:05:40] VERBOSE[25061] logger.c:     --
>> <SIP/113.105.152.56-b37009f8> Playing 'ss-noservice' (language 'en')
>> [Nov 20 17:05:47] VERBOSE[25061] logger.c:     -- Executing
>> [s em from-sip-external:6] PlayTones("SIP/113.105.152.56-b37009f8",
>> "congestion") in new stack
>> [Nov 20 17:05:47] VERBOSE[25061] logger.c:     -- Executing
>> [s em from-sip-external:7] Congestion("SIP/113.105.152.56-b37009f8", "5") in
>> new stack
>> [Nov 20 17:05:52] VERBOSE[25061] logger.c:   == Spawn extension
>> (from-sip-external, s, 7) exited non-zero on 'SIP/113.105.152.56-b37009f8'
>> [Nov 20 17:05:52] VERBOSE[25061] logger.c:     -- Executing
>> [h em from-sip-external:1] NoOp("SIP/113.105.152.56-b37009f8", "Hangup") in
> new
>> stack
>> [Nov 20 17:05:52] VERBOSE[25061] logger.c:     -- Executing
>> [h em from-sip-external:2] Set("SIP/113.105.152.56-b37009f8", "DID=s") in new
>> stack
>> [Nov 20 17:05:52] VERBOSE[25061] logger.c:     -- Executing
>> [h em from-sip-external:3] Goto("SIP/113.105.152.56-b37009f8", "s|1") in new
>> stack
>> [Nov 20 17:05:52] VERBOSE[25061] logger.c:     -- Executing
>> [s em from-sip-external:1] GotoIf("SIP/113.105.152.56-b37009f8",
>> "0?from-trunk|s|1") in new stack
>> [Nov 20 17:05:52] VERBOSE[25061] logger.c:     -- Executing
>> [s em from-sip-external:2] Set("SIP/113.105.152.56-b37009f8",
>> "TIMEOUT(absolute)=15") in new stack
>> [Nov 20 17:05:52] VERBOSE[25061] logger.c:     -- Executing
>> [s em from-sip-external:3] Answer("SIP/113.105.152.56-b37009f8", "") in new
>> stack
>> [Nov 20 17:05:52] VERBOSE[25061] logger.c:   == Spawn extension
>> (from-sip-external, s, 3) exited non-zero on 'SIP/113.105.152.56-b37009f8'
>>
>> **
>>
>>                Fico no aguardo
>>
>> Abraço
>>
>>
>> Alexandre
>> _______________________________________________
>> A Redfone é líder no fornecimento de bridges TDMoE &lt;-> E1
>> - Valor similar ao de placas E1 PCI;
>> - Não há problemas de compatibilidade com barramento PCI;
>> - Possibilitam a construção de soluções de alta disponibilidade(dois
>> servidores compartilham o mesmo E1)
>> Conheça mais sobre este produto em www.red-fone.com
>> _______________________________________________
>> Lista de discussões AsteriskBrasil.org
>> AsteriskBrasil em listas.asteriskbrasil.org
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>>
> 
> 
>

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