Different Types of UPS Systems

Different Types of UPS Systems The varied types of uninterruptible power supplies (UPS) and their attributes often cause confusion in the data center industry. For example, it is widely believed that there are only two types of UPS systems, namely standby UPS and on-line UPS. These two commonly used terms do not correctly describe many of the UPS systems available. Many misunderstandings about UPS systems are cleared up when the…

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Moving a SSL certificate from Microsoft IIS 8 to Apache

Moving a SSL certificate from Microsoft IIS 8 to Apache

In this post we will look that how to move SSL certificate .PFX from IIS 8 to Apache Server. The apache server requires two file. 1 – Server.key : the private key associated with the certificate 2 – Server.crt :  the public SSL certificate issued by certificate authority. To move a SSL certificate from Microsoft IIS 8.0 to Apache server, the certificate must be converted from a PKCS#12 (.p12 or…

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IP Routing and the Routing Table

IP Routing and the Routing Table

What are Routes and Route Segments?? Routers are necessary for the selection of the route on the Internet. When a router receives an IP packet, it selects an appropriate path (through a network) based on the destination address of the packet. It then forwards the packet to the next router in the path. The packet is thus transferred from one router to the next along the path. The last router…

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Installing Let’s Encrypt SSL Certificate on CentOS7

Installing Let’s Encrypt SSL Certificate on CentOS7

In this tutorial I will show you how to install Let’s Encrypt SSL certificate on CentOS7, The server will be running Apache as webserver. The Let’s Encrypt provides trusted certificate for 3 months (90 days), so we will also see how to automate the renewal process. Requirements: CentOS7 Server with Apache as webserver One domain name configured for A record in Public DNS In this tutorial, we will install a…

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How to View a Certificate Fingerprint as SHA-256, SHA-1 or MD5 using OpenSSL

During the configuration of PKIFED federation for eduGAIN, we got the requirement to see the thumbprint of the SSL Certificate as SHA-256, SHA-1 or MD5 using OpenSSL command. We used the below OpenSSL commands to see the certificate thumbprint. The Thumbprint is an identifier used by some server platforms to locate the certificate in a certificate store. Requirement: How to View a Certificate Thumbprint as SHA-256, SHA-1 or MD5 using…

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