Extract files from a TCP stream when given a PCAP file and Wireshark Implementing Cisco Cybersecurity Operations (210-255) For this example, I made a sample pcapng file using Wireshark. I did a wget of a graphics file from my website. Go to File>Export Objects>HTTP (works the same with the other protocols listed) 2. Choose the […]
Identify these key elements in an intrusion from a given PCAP file : Source address, Destination address, Source port, Destination port, Protocols, and Payloads Implementing Cisco Cybersecurity Operations (210-255) PCAP files are a way of storing packet data captured using a packet sniffer like Wireshark. The Wireshark website has dozens of example packet captures that […]
Identify the elements from a NetFlow v5 record from a security event Implementing Cisco Cybersecurity Operations (210-255) When it comes to Netflow, the 5-tuple is king. Be sure to know the 5-tuple. Source IP Address Destination IP Address Source Port Destination Port Protocol 10.1.1.2 192.168.1.3 23343 443 TCP 10.1.3.3 192.168.3.2 43232 53 UDP 192.168.4.5 172.16.3.2 […]
Describe the fields in these protocol headers as they relate to intrusion analysis: Ethernet frame, IPv4, IPv6, TCP, UDP, ICMP, HTTP Implementing Cisco Cybersecurity Operations (210-255) Ethernet Frames Public Domain, Link The biggest thing for the Ethernet frame is to be able to identify the source and destination MAC address. Often you will be looking […]
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