Incident response

The Transmission Control Protocol (TCP) is one of the most commonly-used protocols on the internet. Unlike the User Datagram Protocol (UDP), TCP is not a “fire...

The Internet Protocol (IP) is the most widely-used network-level protocol. Common transport-level protocols, the Transport Control Protocol (TCP) and the...

Unlike the Transport Control Protocol (TCP) and User Datagram Protocol (UDP), the Internet Control Message Protocol (ICMP) is not designed for carrying data.  While...

In this episode of Cyber Work with Infosec, Chris Sienko interviewed Keatron Evans, Infosec instructor, managing consultant at KM Cyber Security, LLC and...

The Simple Mail Transfer Protocol (SMTP) is one of three protocols used for email. The other two are Post Office Protocol v3 (POP3) and Internet Message Access...

Internet Relay Chat (IRC) uses a client-server model to provide a chatroom. A single IRC server is set up, and users connect to the server via IRC clients....

The Hypertext Transfer Protocol (HTTP) is the protocol that is used to request and serve web content. HTTP is a plaintext protocol that runs on port 80. However,...

The File Transfer Protocol (FTP), as its name suggests, is designed for transferring files between computers. It is used for a variety of different purposes,...

The Domain Name System (DNS) protocol was first defined in RFCs 1034 and 1035 but has been updated by many subsequent RFCs. A primary purpose of the DNS protocol...

Data collection and analysis for use by network engineers, security professionals and incident response has only exploded over the years with the growth of...