sstp: keep default ssl ciphers for better compatibility

accel-pppd/accel-ppp.conf

@@ -114,7 +114,7 @@ verbose=1
 #cert-hash-sha1=
 #cert-hash-sha256=
 #ssl=1
-#ssl-ciphers=HIGH:!aNULL:!kRSA:!PSK:!SRP:!MD5:!RC4
+#ssl-ciphers=DEFAULT
 #ssl-prefer-server-ciphers=0
 #ssl-ca-file=/etc/ssl/sstp-ca.crt
 #ssl-pemfile=/etc/ssl/sstp.pem

accel-pppd/ctrl/sstp/sstp.c

@@ -170,7 +170,7 @@ static X509 *conf_ssl_cert = NULL;
 static EVP_PKEY *conf_ssl_pkey = NULL;
 
 static const char *conf_ssl_ca_file = NULL;
-static const char *conf_ssl_ciphers = "HIGH:!aNULL:!kRSA:!PSK:!SRP:!MD5:!RC4";
+static const char *conf_ssl_ciphers = NULL;
 static int conf_ssl_prefer_server_ciphers = 0;
 static int conf_ssl = 1;
 #endif