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Internal CAs tend to be used in more secure applications than external CAs because the trust relationships can be tightly controlled by a single organization., However, that also means they're harder to trust than a publicly available CA, and can't be used for generic applications such as Email and Web SSL.
No – SSL certificates can no longer be used to secure your company's internal websites, intranets or IP address. This is because internal servers are vulnerable to 'man-in-the-middle' attacks, in which attackers will use a copy of the real certificate to intercept and eavesdrop on any form of online communication.
We get asked the following question a lot in this industry: “Can I use one SSL certificate on multiple domains?” We have the following response: Yes.
Domain Validation (DV SSL) Certificates This type of certificate is ideal for internal testing domains or even blog posts because they offer full encryption and basic trust indicators.
Let's suppose I have a web application that is accessed externally via http://webapp.mydomain.com and internally via http://webapp.intranetservername/
Do I need two SSL certificates? Or can the same SSL certificate be used?
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