Category: L.A.M.P.

What is a seeder and what is a leecher?

When I use Transmission to do the downloading, I see some figures on the web control panel of Transmission. Those are technical terms. Such as Seeder, Leecher, Ratio, Trackers, Peers, etc. So the questions come. What is a seeder? What is a leecher? Let me check it from search [...]
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5 Free SSL Tools You Must Try in 2016

It is 2016, your website must be SSL encrypted. Now, you have questions, how about my server and how about my SSL installation? This is the answer to this question. You must try these five free tools to test, check, analyse your https website. No.1 SSLShopper It is an [...]
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Add my Blog to HSTS preload list

Now my Blog, David Yin Blog is https encrypted . And it is also HSTS enabled. And latest, it is HSTS preload enabled. It has three layers meaning. https support. HSTS enabled. HSTS preload enabled. Let me explain them one by one. First, add https support. I did this [...]
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PHP Benchmark on PHP 7.0

It is a test bed on a VPS. Here is the basic information of it. Ubuntu Linux 14.04.3 Linux 3.13.0-71-generic on x86_64 Intel(R) Xeon(R) CPU L5520 @ 2.27GHz, 1 cores 512MB Memory Nginx 1.9.9 PHP 7.0 [...]
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Email Server Settings for ZOHOMail

Here is a notes for Email Server Settings. It is not just for Email server. It is mainly for DNS setting for Email server. The purpose of it is to prevent from your outgoing email into spam box. I have a web page, which use PHPMailer to send email. [...]
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Remove Old Kernels on CentOS

I know how to remove old Kernels on Ubuntu. But, I don’t know how to do it on CentOS. After googling, I found answer. Go through and see how many kernels here. Three kernels in machine. Delete, remove old kernels. [...]
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Tools to check your SSL Installation

I have tried some tools to diagnose my SSL certificate installation. Some related to correct certificate, and more on certificate chain issues. SSL Certificates are trusted from its parent, or issued by its high lever certificate. It looks like a chain, one connect to other one and gos to [...]
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Certificate Installation: NGINX with Comodo SSL

Here is the guide to show you how to install the Comodo SSL certificate in Nginx. Order Comodo Certificate. And received the Certificate files. I don’t discuss how to get it, where to get it. It is another topic. You will receive following files. Positive SSL certificate, it is [...]
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