Forum Discussion
AhmedGalal219_3
Nimbostratus
NimbostratusSSL Profile Cipher
Hi all i need to make sure that my SSL Client profile uses TLS1.2 without using DES Cipher . what i have done is to change the Chiper in SSL Profile from DEFAULT to TLS1_2:!DES just making sure that am moving to right bath . one more thing in client Authentication there is a client certificate option i need to know ignore option thats mean user can connect with any certificate not the certificate i made in profile or what am little lose in this point .
thanks all
what i want to make sure that when i write in the cipher TLS1_2:!DES:!3DES will use only TLS1.2 protcol without DES or 3DES ciphers
yes but i suggest you check tmm --clientciphers, so you will know what exactly cipher suites you get.
for example, the following is output from 13.1.0.1. although, only tls 1.2 without des or 3des but it also includes rc4.
[root@ve13a:Active:In Sync] config tmm --clientciphers 'TLSv1_2:!DES:!3DES' ID SUITE BITS PROT METHOD CIPHER MAC KEYX 0: 49199 ECDHE-RSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDHE_RSA 1: 49171 ECDHE-RSA-AES128-CBC-SHA 128 TLS1.2 Native AES SHA ECDHE_RSA 2: 49191 ECDHE-RSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDHE_RSA 3: 49200 ECDHE-RSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDHE_RSA 4: 49172 ECDHE-RSA-AES256-CBC-SHA 256 TLS1.2 Native AES SHA ECDHE_RSA 5: 49192 ECDHE-RSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDHE_RSA 6: 49201 ECDH-RSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDH_RSA 7: 49193 ECDH-RSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDH_RSA 8: 49166 ECDH-RSA-AES128-SHA 128 TLS1.2 Native AES SHA ECDH_RSA 9: 49202 ECDH-RSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDH_RSA 10: 49194 ECDH-RSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDH_RSA 11: 49167 ECDH-RSA-AES256-SHA 256 TLS1.2 Native AES SHA ECDH_RSA 12: 156 AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 RSA 13: 47 AES128-SHA 128 TLS1.2 Native AES SHA RSA 14: 60 AES128-SHA256 128 TLS1.2 Native AES SHA256 RSA 15: 157 AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 RSA 16: 53 AES256-SHA 256 TLS1.2 Native AES SHA RSA 17: 61 AES256-SHA256 256 TLS1.2 Native AES SHA256 RSA 18: 65 CAMELLIA128-SHA 128 TLS1.2 Native CAMELLIA SHA RSA 19: 132 CAMELLIA256-SHA 256 TLS1.2 Native CAMELLIA SHA RSA 20: 49195 ECDHE-ECDSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDHE_ECDSA 21: 49161 ECDHE-ECDSA-AES128-SHA 128 TLS1.2 Native AES SHA ECDHE_ECDSA 22: 49187 ECDHE-ECDSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDHE_ECDSA 23: 49196 ECDHE-ECDSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDHE_ECDSA 24: 49162 ECDHE-ECDSA-AES256-SHA 256 TLS1.2 Native AES SHA ECDHE_ECDSA 25: 49188 ECDHE-ECDSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDHE_ECDSA 26: 49197 ECDH-ECDSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDH_ECDSA 27: 49156 ECDH-ECDSA-AES128-SHA 128 TLS1.2 Native AES SHA ECDH_ECDSA 28: 49189 ECDH-ECDSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDH_ECDSA 29: 49198 ECDH-ECDSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDH_ECDSA 30: 49157 ECDH-ECDSA-AES256-SHA 256 TLS1.2 Native AES SHA ECDH_ECDSA 31: 49190 ECDH-ECDSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDH_ECDSA 32: 158 DHE-RSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 EDH/RSA 33: 51 DHE-RSA-AES128-SHA 128 TLS1.2 Native AES SHA EDH/RSA 34: 103 DHE-RSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 EDH/RSA 35: 159 DHE-RSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 EDH/RSA 36: 57 DHE-RSA-AES256-SHA 256 TLS1.2 Native AES SHA EDH/RSA 37: 107 DHE-RSA-AES256-SHA256 256 TLS1.2 Native AES SHA256 EDH/RSA 38: 69 DHE-RSA-CAMELLIA128-SHA 128 TLS1.2 Native CAMELLIA SHA EDH/RSA 39: 136 DHE-RSA-CAMELLIA256-SHA 256 TLS1.2 Native CAMELLIA SHA EDH/RSA 40: 162 DHE-DSS-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 DHE/DSS 41: 50 DHE-DSS-AES128-SHA 128 TLS1.2 Native AES SHA DHE/DSS 42: 64 DHE-DSS-AES128-SHA256 128 TLS1.2 Native AES SHA256 DHE/DSS 43: 163 DHE-DSS-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 DHE/DSS 44: 56 DHE-DSS-AES256-SHA 256 TLS1.2 Native AES SHA DHE/DSS 45: 106 DHE-DSS-AES256-SHA256 256 TLS1.2 Native AES SHA256 DHE/DSS 46: 68 DHE-DSS-CAMELLIA128-SHA 128 TLS1.2 Native CAMELLIA SHA DHE/DSS 47: 135 DHE-DSS-CAMELLIA256-SHA 256 TLS1.2 Native CAMELLIA SHA DHE/DSS 48: 166 ADH-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ADH 49: 167 ADH-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ADH 50: 5 RC4-SHA 128 TLS1.2 Native RC4 SHA RSA 51: 4 RC4-MD5 128 TLS1.2 Native RC4 MD5 RSAthats mean that it as i didnt SSL profile at all and it will accept any certificate or what.
if i do not misremember, ignore means big-ip will not request client certificate from client (server certificate is already presented to client).
nitass_89166Noctilucent
what i have done is to change the Chiper in SSL Profile from DEFAULT to TLS1_2:!DES just making sure that am moving to right bath .
you may check cipher suites using tmm --clientciphers command.
K15194: Overview of the BIG-IP SSL/TLS cipher suite
https://support.f5.com/csp/article/K15194one more thing in client Authentication there is a client certificate option i need to know ignore option thats mean user can connect with any certificate not the certificate i made in profile or what am little lose in this point.
John has written excellent article regarding client authentication here.
SSL Profiles Part 8: Client Authentication by John Wagnon
https://devcentral.f5.com/articles/ssl-profiles-part-8-client-authentication
AhmedGalal219_3Indeed i have readed this article before i post but i wanted to make sure that i have understanded it in right way and make sure of my configuration . what i want to make sure that when i write in the cipher TLS1_2:!DES:!3DES will use only TLS1.2 protcol without DES or 3DES ciphers .
And am already read SSL Profiles Part 8: Client Authentication too before i post this but am in little lose about ignore function he said that it will ignore any certificate presented and will not authenticate the client before establishing the SSL session. thats mean that it as i didnt SSL profile at all and it will accept any certificate or what .
nitassEmployee
what i have done is to change the Chiper in SSL Profile from DEFAULT to TLS1_2:!DES just making sure that am moving to right bath .
you may check cipher suites using tmm --clientciphers command.
K15194: Overview of the BIG-IP SSL/TLS cipher suite
https://support.f5.com/csp/article/K15194one more thing in client Authentication there is a client certificate option i need to know ignore option thats mean user can connect with any certificate not the certificate i made in profile or what am little lose in this point.
John has written excellent article regarding client authentication here.
SSL Profiles Part 8: Client Authentication by John Wagnon
https://devcentral.f5.com/articles/ssl-profiles-part-8-client-authentication- AhmedGalal219_3
Indeed i have readed this article before i post but i wanted to make sure that i have understanded it in right way and make sure of my configuration . what i want to make sure that when i write in the cipher TLS1_2:!DES:!3DES will use only TLS1.2 protcol without DES or 3DES ciphers .
And am already read SSL Profiles Part 8: Client Authentication too before i post this but am in little lose about ignore function he said that it will ignore any certificate presented and will not authenticate the client before establishing the SSL session. thats mean that it as i didnt SSL profile at all and it will accept any certificate or what .
- nitass
what i want to make sure that when i write in the cipher TLS1_2:!DES:!3DES will use only TLS1.2 protcol without DES or 3DES ciphers
yes but i suggest you check tmm --clientciphers, so you will know what exactly cipher suites you get.
for example, the following is output from 13.1.0.1. although, only tls 1.2 without des or 3des but it also includes rc4.
[root@ve13a:Active:In Sync] config tmm --clientciphers 'TLSv1_2:!DES:!3DES' ID SUITE BITS PROT METHOD CIPHER MAC KEYX 0: 49199 ECDHE-RSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDHE_RSA 1: 49171 ECDHE-RSA-AES128-CBC-SHA 128 TLS1.2 Native AES SHA ECDHE_RSA 2: 49191 ECDHE-RSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDHE_RSA 3: 49200 ECDHE-RSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDHE_RSA 4: 49172 ECDHE-RSA-AES256-CBC-SHA 256 TLS1.2 Native AES SHA ECDHE_RSA 5: 49192 ECDHE-RSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDHE_RSA 6: 49201 ECDH-RSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDH_RSA 7: 49193 ECDH-RSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDH_RSA 8: 49166 ECDH-RSA-AES128-SHA 128 TLS1.2 Native AES SHA ECDH_RSA 9: 49202 ECDH-RSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDH_RSA 10: 49194 ECDH-RSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDH_RSA 11: 49167 ECDH-RSA-AES256-SHA 256 TLS1.2 Native AES SHA ECDH_RSA 12: 156 AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 RSA 13: 47 AES128-SHA 128 TLS1.2 Native AES SHA RSA 14: 60 AES128-SHA256 128 TLS1.2 Native AES SHA256 RSA 15: 157 AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 RSA 16: 53 AES256-SHA 256 TLS1.2 Native AES SHA RSA 17: 61 AES256-SHA256 256 TLS1.2 Native AES SHA256 RSA 18: 65 CAMELLIA128-SHA 128 TLS1.2 Native CAMELLIA SHA RSA 19: 132 CAMELLIA256-SHA 256 TLS1.2 Native CAMELLIA SHA RSA 20: 49195 ECDHE-ECDSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDHE_ECDSA 21: 49161 ECDHE-ECDSA-AES128-SHA 128 TLS1.2 Native AES SHA ECDHE_ECDSA 22: 49187 ECDHE-ECDSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDHE_ECDSA 23: 49196 ECDHE-ECDSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDHE_ECDSA 24: 49162 ECDHE-ECDSA-AES256-SHA 256 TLS1.2 Native AES SHA ECDHE_ECDSA 25: 49188 ECDHE-ECDSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDHE_ECDSA 26: 49197 ECDH-ECDSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDH_ECDSA 27: 49156 ECDH-ECDSA-AES128-SHA 128 TLS1.2 Native AES SHA ECDH_ECDSA 28: 49189 ECDH-ECDSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDH_ECDSA 29: 49198 ECDH-ECDSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDH_ECDSA 30: 49157 ECDH-ECDSA-AES256-SHA 256 TLS1.2 Native AES SHA ECDH_ECDSA 31: 49190 ECDH-ECDSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDH_ECDSA 32: 158 DHE-RSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 EDH/RSA 33: 51 DHE-RSA-AES128-SHA 128 TLS1.2 Native AES SHA EDH/RSA 34: 103 DHE-RSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 EDH/RSA 35: 159 DHE-RSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 EDH/RSA 36: 57 DHE-RSA-AES256-SHA 256 TLS1.2 Native AES SHA EDH/RSA 37: 107 DHE-RSA-AES256-SHA256 256 TLS1.2 Native AES SHA256 EDH/RSA 38: 69 DHE-RSA-CAMELLIA128-SHA 128 TLS1.2 Native CAMELLIA SHA EDH/RSA 39: 136 DHE-RSA-CAMELLIA256-SHA 256 TLS1.2 Native CAMELLIA SHA EDH/RSA 40: 162 DHE-DSS-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 DHE/DSS 41: 50 DHE-DSS-AES128-SHA 128 TLS1.2 Native AES SHA DHE/DSS 42: 64 DHE-DSS-AES128-SHA256 128 TLS1.2 Native AES SHA256 DHE/DSS 43: 163 DHE-DSS-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 DHE/DSS 44: 56 DHE-DSS-AES256-SHA 256 TLS1.2 Native AES SHA DHE/DSS 45: 106 DHE-DSS-AES256-SHA256 256 TLS1.2 Native AES SHA256 DHE/DSS 46: 68 DHE-DSS-CAMELLIA128-SHA 128 TLS1.2 Native CAMELLIA SHA DHE/DSS 47: 135 DHE-DSS-CAMELLIA256-SHA 256 TLS1.2 Native CAMELLIA SHA DHE/DSS 48: 166 ADH-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ADH 49: 167 ADH-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ADH 50: 5 RC4-SHA 128 TLS1.2 Native RC4 SHA RSA 51: 4 RC4-MD5 128 TLS1.2 Native RC4 MD5 RSAthats mean that it as i didnt SSL profile at all and it will accept any certificate or what.
if i do not misremember, ignore means big-ip will not request client certificate from client (server certificate is already presented to client).
- nitass
additionally, you may also consider disabling protocol (e.g. ssl 3.0, tls 1.0, tls 1.1) using clientssl profile's options.
 
Cipher Suite Practices and Pitfalls by MegaZone (Misuse section)
 
https://devcentral.f5.com/s/articles/cipher-suite-practices-and-pitfalls-25564 
- AhmedGalal219_3
thanks this was very helpful i did prevent RC4 too and i will convert all client certificate option in profiles to require cuz i didnt know at the beginig that ignore is the default option and it doesnt inforce and validate client certificate .
- nitass_89166
what i want to make sure that when i write in the cipher TLS1_2:!DES:!3DES will use only TLS1.2 protcol without DES or 3DES ciphers
yes but i suggest you check tmm --clientciphers, so you will know what exactly cipher suites you get.
for example, the following is output from 13.1.0.1. although, only tls 1.2 without des or 3des but it also includes rc4.
[root@ve13a:Active:In Sync] config tmm --clientciphers 'TLSv1_2:!DES:!3DES' ID SUITE BITS PROT METHOD CIPHER MAC KEYX 0: 49199 ECDHE-RSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDHE_RSA 1: 49171 ECDHE-RSA-AES128-CBC-SHA 128 TLS1.2 Native AES SHA ECDHE_RSA 2: 49191 ECDHE-RSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDHE_RSA 3: 49200 ECDHE-RSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDHE_RSA 4: 49172 ECDHE-RSA-AES256-CBC-SHA 256 TLS1.2 Native AES SHA ECDHE_RSA 5: 49192 ECDHE-RSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDHE_RSA 6: 49201 ECDH-RSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDH_RSA 7: 49193 ECDH-RSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDH_RSA 8: 49166 ECDH-RSA-AES128-SHA 128 TLS1.2 Native AES SHA ECDH_RSA 9: 49202 ECDH-RSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDH_RSA 10: 49194 ECDH-RSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDH_RSA 11: 49167 ECDH-RSA-AES256-SHA 256 TLS1.2 Native AES SHA ECDH_RSA 12: 156 AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 RSA 13: 47 AES128-SHA 128 TLS1.2 Native AES SHA RSA 14: 60 AES128-SHA256 128 TLS1.2 Native AES SHA256 RSA 15: 157 AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 RSA 16: 53 AES256-SHA 256 TLS1.2 Native AES SHA RSA 17: 61 AES256-SHA256 256 TLS1.2 Native AES SHA256 RSA 18: 65 CAMELLIA128-SHA 128 TLS1.2 Native CAMELLIA SHA RSA 19: 132 CAMELLIA256-SHA 256 TLS1.2 Native CAMELLIA SHA RSA 20: 49195 ECDHE-ECDSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDHE_ECDSA 21: 49161 ECDHE-ECDSA-AES128-SHA 128 TLS1.2 Native AES SHA ECDHE_ECDSA 22: 49187 ECDHE-ECDSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDHE_ECDSA 23: 49196 ECDHE-ECDSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDHE_ECDSA 24: 49162 ECDHE-ECDSA-AES256-SHA 256 TLS1.2 Native AES SHA ECDHE_ECDSA 25: 49188 ECDHE-ECDSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDHE_ECDSA 26: 49197 ECDH-ECDSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ECDH_ECDSA 27: 49156 ECDH-ECDSA-AES128-SHA 128 TLS1.2 Native AES SHA ECDH_ECDSA 28: 49189 ECDH-ECDSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 ECDH_ECDSA 29: 49198 ECDH-ECDSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ECDH_ECDSA 30: 49157 ECDH-ECDSA-AES256-SHA 256 TLS1.2 Native AES SHA ECDH_ECDSA 31: 49190 ECDH-ECDSA-AES256-SHA384 256 TLS1.2 Native AES SHA384 ECDH_ECDSA 32: 158 DHE-RSA-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 EDH/RSA 33: 51 DHE-RSA-AES128-SHA 128 TLS1.2 Native AES SHA EDH/RSA 34: 103 DHE-RSA-AES128-SHA256 128 TLS1.2 Native AES SHA256 EDH/RSA 35: 159 DHE-RSA-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 EDH/RSA 36: 57 DHE-RSA-AES256-SHA 256 TLS1.2 Native AES SHA EDH/RSA 37: 107 DHE-RSA-AES256-SHA256 256 TLS1.2 Native AES SHA256 EDH/RSA 38: 69 DHE-RSA-CAMELLIA128-SHA 128 TLS1.2 Native CAMELLIA SHA EDH/RSA 39: 136 DHE-RSA-CAMELLIA256-SHA 256 TLS1.2 Native CAMELLIA SHA EDH/RSA 40: 162 DHE-DSS-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 DHE/DSS 41: 50 DHE-DSS-AES128-SHA 128 TLS1.2 Native AES SHA DHE/DSS 42: 64 DHE-DSS-AES128-SHA256 128 TLS1.2 Native AES SHA256 DHE/DSS 43: 163 DHE-DSS-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 DHE/DSS 44: 56 DHE-DSS-AES256-SHA 256 TLS1.2 Native AES SHA DHE/DSS 45: 106 DHE-DSS-AES256-SHA256 256 TLS1.2 Native AES SHA256 DHE/DSS 46: 68 DHE-DSS-CAMELLIA128-SHA 128 TLS1.2 Native CAMELLIA SHA DHE/DSS 47: 135 DHE-DSS-CAMELLIA256-SHA 256 TLS1.2 Native CAMELLIA SHA DHE/DSS 48: 166 ADH-AES128-GCM-SHA256 128 TLS1.2 Native AES-GCM SHA256 ADH 49: 167 ADH-AES256-GCM-SHA384 256 TLS1.2 Native AES-GCM SHA384 ADH 50: 5 RC4-SHA 128 TLS1.2 Native RC4 SHA RSA 51: 4 RC4-MD5 128 TLS1.2 Native RC4 MD5 RSAthats mean that it as i didnt SSL profile at all and it will accept any certificate or what.
if i do not misremember, ignore means big-ip will not request client certificate from client (server certificate is already presented to client).
- nitass_89166
additionally, you may also consider disabling protocol (e.g. ssl 3.0, tls 1.0, tls 1.1) using clientssl profile's options.
 
Cipher Suite Practices and Pitfalls by MegaZone (Misuse section)
 
https://devcentral.f5.com/s/articles/cipher-suite-practices-and-pitfalls-25564 
- AhmedGalal219_3
thanks this was very helpful i did prevent RC4 too and i will convert all client certificate option in profiles to require cuz i didnt know at the beginig that ignore is the default option and it doesnt inforce and validate client certificate .