networking

# Networking Skill

## Overview

Master Linux networking configuration, troubleshooting, and security.

## Capabilities

- **Configuration**: IP, routes, DNS
- **Troubleshooting**: tcpdump, netstat, ss
- **Firewalls**: iptables, nftables, firewalld
- **Services**: SSH, VPN, proxy
- **Monitoring**: iftop, nethogs, nmap

## Examples

```bash
# Check network interfaces
ip addr show

# Test connectivity
ping -c 4 google.com
traceroute google.com
```