I have three servers:

  1. Web-Server
  2. Database Server
  3. Database Replication Server

In the upcoming days, I am going to order a SSL certificate for the Web-Server to deliver the data encrypted to the client. This SSL certificate should be enough to also transport the data encrypted to the Database Server.

However, I am also in need of an encrypted connection in regards to the Database Replication Server.

Is it possible to set up the exact same SSL certificate on the Database Server/Database Replication Server? Or will I have to order an extra SSL certificate?

OS: Ubuntu Linux

DBMS: postgreSQL

Reason for encrypting data: Securing data, avoiding MITM attacks, ... (propably every reason for SSL encryption).

WAN: I have three independent vServers. I might move the DB-Servers into a VLAN (intranet) later on but at the moment all servers are running independently at one hoster's network.

  • More detail needed - why are you encrypting the database connection? What database engine are you using? What OS? Is your database connection across a WAN? – Craig Watson Jun 10 '15 at 16:11
  • Why would these matter? He needs them encrypted, and wants to know how many certs he will need – ztk Jun 10 '15 at 16:12
  • 1
    How do you know? The OP hasn't given any details. – Craig Watson Jun 10 '15 at 16:15
  • I know he needs them encrypted because he says so in his question. (The sentence beginning "However") – ztk Jun 10 '15 at 16:22
  • Updated the question. Why do OS and DBMS matter? – chrisp Jun 10 '15 at 16:26

Yes, You can use SSL certificate for any of your server whether it is Web-Server, Database Server or Database Replication Server.

If you buy a Comodo SSL certificate then you will be allows to install SSL on any number of server.

For Symantec & Thawte SSL certificate, you need to purchase license for each single server.

  • On your listed website "cheapsslsecurity.com", the GeoTrust products are also listed as having "unlimited server licenses" – Mathias R. Jessen Jun 11 '15 at 11:16
  • Why would that matter? The SSL certificate is still bound to one domain and that domain points to one server only. – chrisp Jun 12 '15 at 7:02

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.