The resolution to this issue is to add an option, in your Java Front-End Server settings:

1) Stop Silk Central services via Silk Central Service Manager

2) Open registry with regedit and go to the Front-end server registry key:

32-bit system: HKEY_LOCAL_MACHINE\SOFTWARE\Apache Software Foundation\Procrun 2.0\SCCFrontendServer\Parameters\Java[Options]
64-bit system: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Apache Software Foundation\Procrun 2.0\SCCFrontendServer\Parameters\Java[Options]

3) Edit registry-key "Options" and append the following jvm option to the existing
options:
-Djsse.enableSNIExtension=false

4) Save this registry-key and restart Silk Central services via Silk Central Service Manager

This should now the pass the SSL handshake to confirm the hostname, authenticate your Subversion Source Control, provided you have entered the correct credentials.