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How to Get a Letsencrypt Wildcard SSL Certificate

letsencrypt wildcard image

Acquiring a Secure Sockets Layer Letsencrypt Wildcard SSL certificate before enabling Internet access to Exchange Server.

Exchange 2003 has an outstanding new characteristic that allows Outlook 2003 users to link to an Exchange server higher than the Internet and work in Outlook as if they were joined on the internal network. 

This feature, called Exchange remote procedure call (RPC) Server, also provides secure data transmission without a VPN connection. It uses the RPC over HyperText Transfer Protocol (HTTP) service in Windows 2003 Server. 

It protects data transmission using an installed Secure Sockets Layer Letsencrypt Wildcard  SSL certificate on the Exchange 2003 server.

However, before setting up this process, you must install a Secure Sockets Layer Letsencrypt Wildcard SSL certificate on the Exchange server. How you go referring to doing this is the center of this article.

Letsencrypt Wildcard: Advanced SSL Certificate Providers

Although you could establish the connection described above in previous versions of Exchange. It was unreliable due to several parts, such as host file configurations and Internet service provider (ISP) Internet configurations. 

In previous versions, the link also transmitted data across the Internet insecurely. Requirements for implementing an Exchange RPC server steps to complete the implementation of an Exchange RPC server are:

  • Acquire a Secure Sockets Layer Letsencrypt SSL certificate.
  • Set up the Exchange remote procedure call (RPC) server.
  • Set up Outlook 2003 clients.
  • Built the Exchange remote procedure call (RPC) server to run through the Internet security and acceleration (ISA) server.

Secure Sockets Layer Letsencrypt Wildcard SSL certificate requires a certificate authority to generate an SSL certificate. There are three certificate authority options.

Third-party certificate authorities VeriSign and GeoTrust are the representative cases of third-party certificate authorities.

They provide Secure Sockets Layer Letsencrypt Wildcard SSL certificates for commercial and non-commercial sites across the Internet.

Their Letsencrypt Wildcard SSL certificates are automatically recognized by the major Web browsers, such as Internet Explorer and Netscape Navigator.

The downside is that maintaining a Secure Sockets Layer Letsencrypt SSL certificate can be costly. This option is best when end customers who are not a part of your organization, such as customers, will be using a Letsencrypt SSL channel to connect to your Web and Exchange server.

Your customers connect through the Exchange server; you can maintain your certificate authority infrastructure and issue certificates as needed. This is a more budget option than third-party certificate authorities. 

Microsoft Certificate Services can be old for this purpose and is included as a Windows Server 2003. Nevertheless, be aware that if the server becomes come to an understanding, a hacker can corrupt Certificate Services and impersonate you to your end-users. 

Also, if the SSD hard drive fails, you cannot prolonged authenticate your certificates. In either case, it generally means reissuing your certificate authority infrastructure from scrape. The best way to reduce the effect of certificate corruption is to do the following:

  • Install your root Certificate Authority on an SSD hard drive.
  • Set up an Issuing Secondary Certificate Authority. This will task you as your day-to-day manager of certificates.
  • Delete and store the HDD containing your root CA in a safe location, safe deposit box, or vault.
  • Create and install a Secure Sockets Layer SSL certificate on the Exchange server using the providing Certificate Authority.

At this point, if the providing Certificate Authority gets corrupted or compromised, it can be rebuilt from the Root Certificate Authority.

Self-SSL Microsoft provides a third option for implementing a Secure Sockets Layer SSL certificate. Self Secure Sockets Layer Letsencrypt SSL is an Internet Information Service (IIS) 6.0 resource kit mechanism. 

This option is inexpensive but is only recommended when using it with a small number of users. If you have a server dedicated to a project team or small office, this is a permissible option. 

In this case, the place of origin or authority for your Letsencrypt SSL certificate is discovered on the Exchange server, so securing access to the server becomes very important.

Recommended security scenarios while Letsencrypt SSL certificates will help keep safe data transmission between Exchange and the Outlook customers, you still need to protect the server.

The ensuing is a list of acceptable security structures, starting with the best: Demilitarized Zone (DMZ) A firewall is executed on the router connected to the Internet, or traffic to and from the router is managed through the firewall. 

Beyond the firewall, a server should work as a proxy server using a product like Microsoft Internet Security and Acceleration Internet security and acceleration (ISA) Server and an Exchange Front-Engine server.

A second firewall is placed between your internal network and the demilitarized zone (DMZ). Behind the second firewall, you put a complete Exchange server.

Modified demilitarized zone (DMZ) scenarios in this scenario, the Exchange server is placed within the demilitarized zone (DMZ) or on the proxy server.

You still keep in existence a second firewall that joins your internal network. Outer edge only in this structure, you have only one firewall that divides your internal network and the Exchange server from the Internet.

You can use a racially balanced firewall/proxy server product, such as an Internet security and acceleration (ISA) Server, to serve in this capacity.

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