[SR-Users] Disabling weak SSL Cypher suites

[Arik Halperin]

Federico, thanks

Did the changes in the file. It’s fixed.

Arik

> On 22 Dec 2019, at 19:28, Federico Cabiddu <federico.cabiddu at gmail.com> wrote:
> 
> Hi Arik,
> I think that the problem is that you are using a configuration file for tls.
> In this case you have to specify there the parameters like ciphers, because the module's ones will be ignored: http://www.kamailio.org/docs/modules/5.3.x/modules/tls.html#tls.p.config <http://www.kamailio.org/docs/modules/5.3.x/modules/tls.html#tls.p.config>.
> 
> Cheers,
> 
> Federico
> 
> On Sun, Dec 22, 2019 at 6:16 PM Arik Halperin <arik.halperin at s3code.com <mailto:arik.halperin at s3code.com>> wrote:
> Federico, Thank you
> 
> I added these lines to my config:
> 
> #!ifdef WITH_TLS
> # ----- tls params -----
> modparam("tls","config","/usr/local/etc/kamailio/tls.cfg")
> modparam("tls", "cipher_list", "HIGH")
> modparam("tls", "tls_method", "TLSv1.2+")
> #!endif
> 
> But it still doesn’t work.  
> 
> I ran this test, but it still says:
> 
> Cipher Suites
> # TLS 1.0 (suites in server-preferred order)
> TLS_RSA_WITH_AES_256_CBC_SHA (0x35)   WEAK	256
> TLS_RSA_WITH_CAMELLIA_256_CBC_SHA (0x84)   WEAK	256
> TLS_RSA_WITH_AES_128_CBC_SHA (0x2f)   WEAK	128
> TLS_RSA_WITH_SEED_CBC_SHA (0x96)   WEAK	128
> TLS_RSA_WITH_CAMELLIA_128_CBC_SHA (0x41)   WEAK	128
> TLS_RSA_WITH_RC4_128_SHA (0x5)   INSECURE	128
> TLS_RSA_WITH_RC4_128_MD5 (0x4)   INSECURE	128
> TLS_RSA_WITH_3DES_EDE_CBC_SHA (0xa)   WEAK
> 
> 
> I don’t know how to get rid of the insecure ones. 
> 
> Best Regards,
> Arik
> 
> 
>> On 10 Dec 2019, at 9:03, Federico Cabiddu <federico.cabiddu at gmail.com <mailto:federico.cabiddu at gmail.com>> wrote:
>> 
>> Hi,
>> for enabling a specific set of ciphers have a look at tls module's cipher_list param: http://www.kamailio.org/docs/modules/5.4.x/modules/tls.html#tls.p.cipher_list <http://www.kamailio.org/docs/modules/5.4.x/modules/tls.html#tls.p.cipher_list>.
>> For supporting specific versions of TLS look at tls_method param: http://www.kamailio.org/docs/modules/5.4.x/modules/tls.html#tls.p.tls_method <http://www.kamailio.org/docs/modules/5.4.x/modules/tls.html#tls.p.tls_method>.
>> 
>> Cheers,
>> 
>> Federico
>> 
>> On Tue, Dec 10, 2019 at 7:30 AM Arik Halperin <arik.halperin at s3code.com <mailto:arik.halperin at s3code.com>> wrote:
>> Hello,
>> 
>> How can I disable:
>> 
>> 
>> TLS_RSA_WITH_RC4_128_SHA (0x5)   INSECURE128
>> 
>> TLS_RSA_WITH_RC4_128_MD5 (0x4)   INSECURE128
>> 
>> What should I put in cypher_list in order to disable the above?
>> 
>> I would also like support TLS 1.2 and TLS 1.3, but remove support for 1.0 and 1.1
>> 
>> Thanks,
>> Arik Halperin
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