Category: Unicorn tutorials

Unicorn’s **Capture Options** provide flexibility for packet capturing, enabling **saving modes**, triggers, adapter selection, and **capture filters** for efficient analysis.

Summary: A network-wide internet access issue was reported for Google domains. Investigation showed the issue was on Google’s end, beyond local control.

Endpoints are devices sending/receiving data. Tools like Unicorn’s Nodes and Conversations tabs help analyze and troubleshoot traffic effectively.

HTTP allows web browsers to access web servers via GET and POST methods, using TCP to transmit data and response codes to ensure…

The issue, a **hosts file error**, redirected www.google.com to 172.16.0.102 due to an incorrect hosts file entry. Removing the entry resolved web access.

PMTU Discovery failure often occurs due to ICMP Type 3 Code 4 messages being ignored, leading to retransmissions or missing packets caused by…

Internet troubleshooting: User faced no Internet access due to misconfigured default gateway. Packet analysis identified the issue as incorrect manual settings.

The IT help desk identified a printer RAM issue causing print jobs to halt. TCP retransmissions revealed the printer stopped responding mid-task.

Troubleshoot DNS issues in a multi-site network setup where branch offices face intranet access problems due to server communication failures.

Wire latency occurs when network delays are caused by devices between client and server. Identifying latency sources requires analyzing TCP packet timing.