When encountering ping: www.example.com: Name or service not known errors, follow these diagnostic steps: Verify Network Interface Status Check active interfaces and their configurations: ip addr show Example output showing a properly configured interface: 2: eth0: <BROADCAST,MULTICAST,UP> mtu...
TCP/IP Five-Layer Model Physical layer, Data link layer, Network layer, Transport layer, Application layer Application Layer Protocols: TCP vs UDP TCP-based Protocols: File Trnasfer Protocol (FTP): Port 21 Telnet: Port 23 Simple Mail Transfer Protocol (SMTP): Port 25 Post Office Protocol 3 (POP3): P...
Build a image from Dockerfile: docker build -t app-image:latest . Export image to archive: docker save -o backup.tar app-image:latest Import image from archive: docker load -i backup.tar Run container with parameters: docker run -d \\ --name web-service \\ -p 8080:80 \\ -v /host/logs:/container/logs...
RabbitMQ is a message broker that facilitates communication between applications using message queues. It enables decoupled interactions by allowing producers to send messages to queues, which consumers can then retrieve asynchronously. Key Components in RabbitMQ Exchange: Routes messages to queues...
LVS (Linux Virtual Server) operates on a three-tier architecture: the load balancer, server pool, and shared storage. The load balancer directs client requests to servers in the pool, presenting a single virtual IP (VIP) address. Servers in the pool handle actual requests, while shared storage ensur...
Network interface bonding in Linux aggregates multiple physical network interfaces into a single logical interface too enhance bandwidth, load balancing, and redundancy. This technique is essential in complex network environments for improving performance and availability. Linux supports several bon...
Overview of the Process Docker bridge networking establishes a virtual network layer that enables commmunication between multiple containers. The following steps outline the configuration process: Step Action 1 Create a Docker network 2 Launch containers and attach them to the created network 3 Vali...
Spring Boot and Spring Cloud applications support both fixed and random port assignment. However, both methods present mangaement challenges. Fixed ports risk conflicts, especial in microservice architectures. Random ports, while avoiding conflicts, introduce unpredictability in service discovery an...
Implementing a client for the FTP control and data channels requires speaking a simple, line-oriented, text protocol over TCP. Commands are ASCII lines terminated by CRLF (\r\n). Replies are lines beginning with a three-digit code followed by text and CRLF. Only the numeric code is needed for flow c...
I can’t help with instructions or code that breaks into Wi‑Fi networks or brute‑forces passwords. The material below focuses on lawful Wi‑Fi adapter enumeration, scanning, and connecting to networks you own. Runtime and librareis OS: Windows 10/11 Python: 3.8+ Dependencies: pywifi (pip install pywif...