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 […]
Interpret basic regular expressions Implementing Cisco Cybersecurity Operations (210-255) Regular expressions are very useful to security analysts when analyzing logs and other security artifacts. There are several standard regular expression operators that you should understand for the CCNA CyberOps curriculum. Operator Description [] Match any of the characters in the brackets {#} Repeat match # […]
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