xFelix
xFelix

Every Technology Thing

xFelix
Every Technology Thing

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What are PTR Records? PTR records (short for Pointer Records) are used to perform a Reverse DNS lookup. As you probably know, DNS (Domain Name System) is sort of a p…

   1,183   2020-09-09   0 Read More

Long story short, this post will guide you to create your own mail server instead of looking for mail hosting service around the whole Internet. Background Like most g…

   2,093   2020-08-27   0 Read More

Recently I dealt with a cyber security attack using MS Office365 3rd party app to grant access to senior staff's email data. This is something new and advanced targeted …

   1,524   2020-05-18   0 Read More

I wrote a previous blog talking about how to issue and install letsencrypt ssl cert on Synology 3 years ago. I also participated in updating the early version of Synolog…

   10,208   2020-04-17   35 Read More

For macOS users, XQuartz is a must have supporting app to run Windows application on macOS. However, XQuartz the latest version is 2.7.11 which hasn't been updated since…

   1,627   2020-04-06   0 Read More

Since upgrade macOS to 10.15 Catalina, 32bit applications are no longer supported. It causes mac user some inconvenience to continue use legacy applications. A typical c…

   5,098   2020-03-06   5 Read More

The fraud landscape is a moving target, and this means that merchants must be ever vigilant against fraud threats. A great deal of merchant focus is on stopping friendly…

   1,066   2020-02-26   0 Read More

Background Some companies are still using legacy VPN technology for employee and contractors to access on premise system remotely. Under the cloud trend, more and mo…

   1,082   2020-02-11   0 Read More

Email threats continue to persist as one of the most common infection vectors. Demonstrating the prevalence of email inbox targeting, Verizon's 2019 Data Breach Investig…

   1,340   2020-01-20   0 Read More

I am exploring use case of Cloudflare Workers these days. One of useful function is to leverage Cloudflare workers to serve as edge cache to speed up website load time a…

   2,151   2020-01-17   2 Read More
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