What knowledge and practical experience do you have in working with network settings and protocols in Linux?

I have basic knowledge and practical experience with network settings and protocols in Linux. I can configure network interfaces using ifconfig and ip, manage routes via route and ip route.

I am also familiar with the basics of TCP/IP, UDP, ICMP protocols, and can use utilities like ping, traceroute, netstat, and ss for network diagnostics. In C/C++ projects, I have implemented simple network applications using sockets (BSD sockets), which helped me understand client-server interaction principles.

Example of a simple TCP client in C++:

#include <iostream>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>

int main() {
    int sock = socket(AF_INET, SOCK_STREAM, 0);
    if (sock < 0) {
        std::cerr << "Socket creation error\n";
        return 1;
    }

    sockaddr_in serv_addr{};
    serv_addr.sin_family = AF_INET;
    serv_addr.sin_port = htons(80); // HTTP port

    if(inet_pton(AF_INET, "93.184.216.34", &serv_addr.sin_addr) <= 0) { // example.com
        std::cerr << "Invalid address\n";
        return 1;
    }

    if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
        std::cerr << "Connection Failed\n";
        return 1;
    }

    std::cout << "Connected to server\n";
    close(sock);
    return 0;
}