Building a Basic DNS Server in PHP/Python: A Beginner's Guide Creating a full-fledged DNS server in PHP is not recommended for production environments due to performance and security concerns. DNS servers require low-level networking capabilities and efficient handling of DNS protocol messages, which PHP is not optim... |
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Dynamic DNS Made Easy: Building a Python-Based Solution Creating a dynamic DNS (Domain Name System) service in Python involves several components: a server that listens for DNS queries, a database to store mappings between domain names and IP addresses, and functionality to update these mappings dynamically. Be... |
Public DNS (Domain Name Service) based on IPv4, IPv6 widely used In most cases, the Dynamic Host Configuration Protocol (DHCP) automatically configures your system to use the IP addresses of your ISP's domain name servers.To use Public DNS, you need to explicitly change the DNS settings in your operating system or devic... |
All Engineering Software Development How can you prioritize software design trade-offs when developing a new product? Software design criteria are specific guidelines and principles that help shape the development of a software system. These criteria ensure that the software meets certain requirements, performs effectively, and is maintainable. Here are some common softwa... |
Configuring IP Address on Centos 6.7 On Centos 6.7, you can check IP address configuration by ifconfig command as below:# ifconfig The below is the example of files on "/etc/sysconfig/network-scripts"# cd /etc/sysconfig/network-scripts# cd ls -Faltotal 220drwxr-xr-x. 2 root root 4096 Oct... |
How do I determine the client IP type (IPv4/IPv6) in PHP In the PHP, there are filters which can determine IPv4 and IPv6: FILTER_VALIDATE_IP, FILTER_FLAG_IPV4, FILTER_FLAG_IPV6.Below code shows how to determine the client protocol:This code snippet checks whether the client's IP address is IPv4 or IPv6 using fil... |
How do I determine the client IP type in Python - IPv4 or IPv6 We can determine IPv6 and IPv4 based on its separator character. IPv4 uses period(.) and IPv6 uses colon(:).Below code shows how to determine the client protocol In this Python code:We import the socket module.We use socket.getaddrinfo() to get the IP... |
Mastering Model Persistence: Saving and Loading Trained Machine Learning Models in Python In the realm of machine learning, training a model is just the beginning. Once we've invested time and resources into training a model, it's essential to save it for future use. In this blog post, we'll explore how to save and load trained machine learning... |
Harnessing the Power of Random Forest Algorithm in Python In the vast landscape of machine learning algorithms, there exists a powerful ensemble method known as Random Forest. It's highly regarded for its robustness and versatility, making it a popular choice for both classification and regression tasks. In this ... |
Understanding and Implementing K-Nearest Neighbors (KNN) Algorithm in Python In the realm of machine learning, there exists a multitude of algorithms, each with its unique strengths and weaknesses. One such algorithm, widely used for classification and regression tasks, is the K-Nearest Neighbors (KNN) algorithm. In this blog post,... |
Forecasting with Linear Regression and KNN Regression in Python In the realm of machine learning, making accurate predictions based on historical data is a common and crucial task. Two popular methods for tackling such problems are Linear Regression and K-Nearest Neighbors (KNN) Regression. Both come with their unique ... |
Python Implementation of Linear Regression Below code is based on Python 3 to implement Linear Regression based on where:Y is the dependent variableX is the independent variableβ0 is the interceptβ1 is the slope Our primary objective while using linear regression is to locate the best-fit... |
Implementing a Versatile DNS Server in Python: Handling A, AAAA, CNAME, and TXT Records Supporting AAAA records, which are used for IPv6 addresses, is a straightforward extension of the previous examples. The AAAA record type is essential for modern applications that operate over IPv6 networks. Here's how you can modify the existing Python DN... |
Exploring the Depths of Data Transfer: sendfile vs. kTLS When optimizing the performance of web servers and ensuring secure data transmission, two technologies often come into play: sendfile and Kernel TLS (kTLS). Both are designed to enhance efficiency in different ways, primarily in the context of sending data... |
Enable/Disable IPv4 on Windows Disabling IPv4 on Windows through a batch script can be a bit more involved compared to disabling IPv6, but it's still achievable using netsh. Here's a script that disables IPv4 on all network interfaces:Save this script with a .bat extension (e.g., disabl... |
Enable/Disable IPv6 on Windows Even though IPv6 is one of the key features by the most of network service providers, but its network equipments are not stable accordingly, so we face a lot of connectivity issues from time to time. Sometimes, it is recommended us to turn IPv6 off for sta... |
How to mount windows shared folder on Centos 6.8 - mount error 12 = Cannot allocate memory to the mount.cifs(8) In order to mount windows shared folder on CentOS, you need to install some packages like belowAnd the easiest way can mount the folder you want will be like belowIn case that you encounter error message like “mount error(12): Cannot allocate memory to the... |
Setup Apache+PHP+MySQL on Centos 6.7 If you installed Centos in minial installation mode, you should install Apache + PHP + MySQL manually.The followings are the procedure to install Apache + PHP + MySQL:Making apache and mysql to start automatically |
Adding new cron job for automated processing on every 10 minutes on Centos 6.7 The software utility Cron is a time-based job scheduler in Unix-like computer operating systems. People who set up and maintain software environments use cron to schedule jobs (commands or shell scripts) to run periodically at fixed times, dates, or interv... |
mcrypt missing when using phpMyAdmin on Centos 6.7 “mcrypt” is an interface to the mcrypt library, which supports a wide variety of block algorithms such as DES, TripleDES, Blowfish (default), 3-WAY, SAFER-SK64, SAFER-SK128, TWOFISH, TEA, RC2 and GOST in CBC, OFB, CFB and ECB cipher modes. Additionally, it... |
Set timezone and time on Centos 6.7 When using OAuth 1.0a, it requires timestamp for authentication. The followings are the example of shell commands which can set time information. Setup timezoneTo set the timezone of your system clock do the following:# rm -rf /etc/localtime# ln -s /u... |
How to optimize MySQL automatically in CentOS Linux I am using CentOS Linux for service purpose. Main reason to use CentOS is cheaper hosting for private purpose. Actually MySQL requires periodical optimization process in my experiences, and I use /etc/cron.hourly usually for those kind of bath processing.&... |