Cloud DNS

votre-efficacite-personnelle.com

This domain is registered for one of our customers.

If this is your domain name, please visit this page to see how to register it as DNS zone into your account.

Note: If you already have registered the DNS zone for your domain name, please wait for DNS propagation. Your web site will be displayed soon. It may take few minutes.

* Do you know what TCPdump is?


Suggested article: TCPdump for Beginners: What It Is, How to Install, and Key Commands

TCPdump is a powerful command-line tool for capturing and analyzing network traffic in real time. It helps users monitor network activity by intercepting data packets, making it essential for troubleshooting, security audits, and performance analysis.

Basic TCPdump Syntax:
tcpdump [options] [filter expression]

Commonly Used Options:

  • -i <interface>: Specifies the network interface to capture packets from.
  • -n: It prevents DNS resolution by showing IP addresses instead of hostnames to reduce latency.
  • -c <count>: Limits the number of packets captured.
  • -w <filename>: Saves captured packets to a file (.pcap format) for later analysis with tools like Wireshark.
  • -r <filename>: Reads and analyzes packets from a saved .pcap file.

Use Cases:

  • Identify Slow Connections: Capture packets to spot delays or timeouts.
  • Track Failed Handshakes: Look for missing ACK responses, indicating connection issues.
  • Detecting Unusual Traffic: Spot irregular patterns like port scanning or DDoS attacks.
  • Identify Malicious Connections: Capture packets to detect suspicious IPs and connections.

If you are interested in learning more about this topic, we suggest you read the following article explaining TCPdump in detail!