![]() ![]() Smtp_tls_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL, ARIA, RSA, AES128 ![]() Smtp_tls_mandatory_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL, ARIA, RSA, AES128 Smtpd_tls_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL, ARIA, RSA, AES128 ![]() Smtpd_tls_mandatory_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL, ARIA, RSA, AES128 Openssl s_client -connect 192.168.2.I have the following in my TLS configuration, but the only problem I have is that TLS_AES_128_GCM_SHA256 is a 128 bit cipher, and I would like to remove it: smtpd_tls_eecdh_grade = ultra You can also use openssl to verify if a cipher or protocol is present. Use OpenSSL to verify presence of cipher or protocol The current version is listed towards the top of the page. In the Operations Console select Maintenance > Update and Rollback.On the Security Console Home tab, click Software Version Information and look at the version listed.You can check your version of Authentication Manager two ways: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 Authentication Manager version Newer Authentication Manager 8.2 servers will exclude all RC4 ciphers, and show ciphersuites such as TLS_ECDHE_WITH_AES_256_GCM_SHA384 and even TLS_RSA_WITH_AES_256_GCM_SHA256 for older browsers/clients, but not RC4, as shown: Older Authentication Manager 8.0 or 8.1 servers will list ciphersuites such as TLS_RSA_WITH_RC4_128_SHA and TLS_RSA_WITH_AES_256_GCM_SHA256. If you look at this server's section, you can see a list of ciphersuites. You can see RSA ciphersuites in the opt/rsa/am/server/config/config.xml, which has a section for various servers and the biztier server which control the RSA consoles. If your scan flags insecure RC4 ciphers then plan your upgrade to Authentication Manager 8.2 to address that. For example, older Windows clients that do not support TLSv1.2 will not work, and this could affect RSA RADIUS in Authentication Manager 8.1 SP1. Beware that there are implications when you do this. You enable strict TLS when your security scan flags insecure SSL protocols and your policy dictates they must be eliminated. See this blog post by Jeffrey Carpenter, RSA Product Marketing Manager, entitled ATTN: RSA SecurID Customers.Apple iOS ATS Issue and What to Do About It. You only need support for TLS (and SHA2 signed certificates). When you have Apple iOS devices that use CT-KIP and App Transport Security has been implemented, you DO NOT need strict TLS.If you need to prevent the use of RC4 ciphers, upgrade to at least Authentication Manager 8.2.If you need to prevent SSL protocols that a less than TLSv1.2, you need to patch at least to Authentication Manager 8.1 SP1 P13 and run the strict TLS1_2 enable script.If you need support for TLS version 1.2 SSL protocol, then upgrade to at least Authentication Manager 8.1 SP1 P3. ![]()
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