Protocols

HTTP is the World Wide Web protocol used for data communication between web servers and clients.

SSDP is a network protocol used in small-sized networks, such as residential ones, for advertising and discovery of network services, primarily the ones supported by the Universal Plug-and-Play (UPnP) architecture. Features of SSDP are used in DDoS attacks of the SSDP amplification type.

TCP is a transport layer protocol in the OSI model, one of the main protocols of the Internet protocol suite.

SSL is a protocol for cryptographically secure data exchange using popular Internet protocols. SSL certificates are used to verify that a public key belongs to its actual owner.

HSTS is a mechanism that forces a web client and server to establish an HTTPS-based secure connection at once, without first using the unprotected HTTP protocol.

UDP is a protocol for sending messages (datagrams) to other hosts without error checking or correction.

HTTPS is an extension of HTTP protocol allowing to secure web traffic.

DNS is a system that keeps the information about Internet domains, with its key function being to provide the IP address of a node or other resource upon receiving its full domain name. DNS consists of multiple servers and has a distributed hierarchical architecture.

Border Gateway Protocol (BGP) is a routing protocol, that works on an application level. BGP chooses the most efficient routes to deliver Internet traffic.

ICMP is a TCP/IP stack protocol used for notifying about exception conditions that can occur in the Internet.