drew/smtprelay
1
0
Fork 1
mirror of https://github.com/decke/smtprelay.git synced 2025-12-27 08:52:32 -07:00
Code Issues Packages Projects Releases Wiki Activity

Improve TLS Config to prefer server ciphers, remove 3DES ciphers and require TLS 1.1 or higher

Browse Source
This commit is contained in:
Bernhard Froehlich
2019-01-08 15:09:29 +00:00
parent 92be537b25
commit 6270d75571
1 changed files with 48 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
main.go
View File

@@ -192,6 +192,30 @@ func main() {
} }
server.TLSConfig = &tls.Config { server.TLSConfig = &tls.Config {
PreferServerCipherSuites: true,
MinVersion: tls.VersionTLS11,
// Ciphersuites as defined in stock Go but without 3DES
// https://golang.org/src/crypto/tls/cipher_suites.go
CipherSuites: []uint16 {
tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
tls.TLS_RSA_WITH_AES_128_GCM_SHA256, // does not provide PFS
tls.TLS_RSA_WITH_AES_256_GCM_SHA384, // does not provide PFS
tls.TLS_RSA_WITH_AES_128_CBC_SHA256,
tls.TLS_RSA_WITH_AES_128_CBC_SHA,
tls.TLS_RSA_WITH_AES_256_CBC_SHA,
},
Certificates: [] tls.Certificate{cert}, Certificates: [] tls.Certificate{cert},
} }
server.ForceTLS = *localForceTLS server.ForceTLS = *localForceTLS
@@ -215,6 +239,30 @@ func main() {
} }
server.TLSConfig = &tls.Config { server.TLSConfig = &tls.Config {
PreferServerCipherSuites: true,
MinVersion: tls.VersionTLS11,
// Ciphersuites as defined in stock Go but without 3DES
// https://golang.org/src/crypto/tls/cipher_suites.go
CipherSuites: []uint16 {
tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
tls.TLS_RSA_WITH_AES_128_GCM_SHA256, // does not provide PFS
tls.TLS_RSA_WITH_AES_256_GCM_SHA384, // does not provide PFS
tls.TLS_RSA_WITH_AES_128_CBC_SHA256,
tls.TLS_RSA_WITH_AES_128_CBC_SHA,
tls.TLS_RSA_WITH_AES_256_CBC_SHA,
},
Certificates: [] tls.Certificate{cert}, Certificates: [] tls.Certificate{cert},
} }