Secure front-end profile
In addition to a default front-end and a default back-end profile, a new default secure front-end profile is available from release 12.1. The settings required for an A+ rating (as of May 2018) from Qualys SSL Labs are preloaded into this profile. Earlier, you had to explicitly set each of the parameters required for an A+ rating on an SSL front-end profile or an SSL virtual server. Now you can bind the ns_default_ssl_profile_secure_frontend profile to your SSL virtual server and the required parameters are automatically set on your SSL virtual server.
Note:
The secure front-end profile is not editable.
When you enable the default profile, the default front-end profile is automatically bound to all the SSL virtual servers. To get an A+ rating, you must explicitly bind the ns_default_ssl_profile_secure_frontend profile and also bind an SHA2/SHA256 server certificate to your SSL virtual server.
Secure front-end profile parameters
The parameters with their default settings are listed here:
SSLv3: DISABLED TLSv1.0: DISABLED TLSv1.1: DISABLED TLSv1.2: ENABLED TLSv1.3: DISABLED
Deny SSL Renegotiation: NONSECURE
HSTS: ENABLED
HSTS IncludeSubDomains: YES
HSTS Max-Age: 15552000
Cipher Name: SECURE Priority :1
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Secure cipher alias
A new secure cipher alias is added and bound to the secure front-end profile. To list the ciphers that are part of this alias, at the command prompt type: show cipher SECURE
show cipher SECURE
1) Cipher Name: TLS1.2-ECDHE-RSA-AES256-GCM-SHA384 Priority : 1
Description: TLSv1.2 Kx=ECC-DHE Au=RSA Enc=AES-GCM(256) Mac=AEAD HexCode=0xc030
2) Cipher Name: TLS1.2-ECDHE-RSA-AES128-GCM-SHA256 Priority : 2
Description: TLSv1.2 Kx=ECC-DHE Au=RSA Enc=AES-GCM(128) Mac=AEAD HexCode=0xc02f
3) Cipher Name: TLS1.2-ECDHE-ECDSA-AES256-GCM-SHA384 Priority : 3
Description: TLSv1.2 Kx=ECC-DHE Au=ECDSA Enc=AES-GCM(256) Mac=AEAD HexCode=0xc02c
4) Cipher Name: TLS1.2-ECDHE-ECDSA-AES128-GCM-SHA256 Priority : 4
Description: TLSv1.2 Kx=ECC-DHE Au=ECDSA Enc=AES-GCM(128) Mac=AEAD HexCode=0xc02b
Done
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Configuration
Perform the following steps:
- Add a load balancing virtual server of type SSL.
- Bind a SHA2/SHA256 certificate.
- Enable the default profile.
- Bind the secure front-end profile to the SSL virtual server.
Get an A+ rating for an SSL virtual server by using the CLI
At the command prompt, type:
add lb vserver <name> <serviceType> <IPAddress> <port>
bind ssl vserver <vServerName> -certkeyName <string>
set ssl parameter -defaultProfile ENABLED
set ssl vserver <vServerName> -sslProfile ns_default_ssl_profile_secure_frontend
show ssl vserver [<vServerName>]
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Example:
add lb vserver ssl-vsvr SSL 192.0.2.240 443
bind ssl vserver ssl-vsvr -certkeyName letrsa
set ssl parameter -defaultProfile ENABLED
Save your configuration before enabling the Default profile. You cannot undo the changes. Are you sure you want to enable the Default profile? [Y/N]y
set ssl vserver ssl-vsvr -sslProfile ns_default_ssl_profile_secure_frontend
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sh ssl vserver ssl-vsvr
Advanced SSL configuration for VServer ssl-vsvr:
Profile Name :ns_default_ssl_profile_secure_frontend
1) CertKey Name: letrsa Server Certificate
Done
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sh ssl profile ns_default_ssl_profile_secure_frontend
1) Name: ns_default_ssl_profile_secure_frontend (Front-End)
SSLv3: DISABLED TLSv1.0: DISABLED TLSv1.1: DISABLED TLSv1.2: ENABLED TLSv1.3: DISABLED
Client Auth: DISABLED
Use only bound CA certificates: DISABLED
Strict CA checks: NO
Session Reuse: ENABLED Timeout: 120 seconds
DH: DISABLED
DH Private-Key Exponent Size Limit: DISABLED Ephemeral RSA: ENABLED Refresh Count: 0
Deny SSL Renegotiation NONSECURE
Non FIPS Ciphers: DISABLED
Cipher Redirect: DISABLED
SSL Redirect: DISABLED
Send Close-Notify: YES
Strict Sig-Digest Check: DISABLED
Zero RTT Early Data: DISABLED
DHE Key Exchange With PSK: NO
Tickets Per Authentication Context: 1
Push Encryption Trigger: Always
PUSH encryption trigger timeout: 1 ms
SNI: DISABLED
OCSP Stapling: DISABLED
Strict Host Header check for SNI enabled SSL sessions: NO
Push flag: 0x0 (Auto)
SSL quantum size: 8 kB
Encryption trigger timeout 100 mS
Encryption trigger packet count: 45
Subject/Issuer Name Insertion Format: Unicode
SSL Interception: DISABLED
SSL Interception OCSP Check: ENABLED
SSL Interception End to End Renegotiation: ENABLED
SSL Interception Maximum Reuse Sessions per Server: 10
Session Ticket: DISABLED
HSTS: ENABLED
HSTS IncludeSubDomains: YES
HSTS Max-Age: 15552000
ECC Curve: P_256, P_384, P_224, P_521
1) Cipher Name: SECURE Priority :1
Description: Predefined Cipher Alias
1) Vserver Name: v2
Done
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Get an A+ rating for an SSL virtual server by using the GUI
- Navigate to Traffic Management > Load Balancing > Virtual Servers, and select an SSL virtual server.
- In Advanced Settings, click SSL Profile.
- Select ns_default_ssl_profile_secure_frontend.
- Click OK.
- Click Done.