A terminal server, also known as a communication server, is a hardware device orserverthat provides terminals -- such as PCs, printers and other devices -- with a common connection point to a local or wide area network (WAN). The terminals connect to the terminal server from theirRS-232Co...
A proxy server is an intermediary server that retrieves data from an Internet source on behalf of a user. Learn more about how they work and their uses.
An SMTP server is dedicated to sending and receiving large quantities of emails. Learn more about SMTP servers and their impact on email marketing here.
When a web server sends a Hypertext Markup Language (HTML) file to a client, it uses HTTP to do so. The HTTP program layer asks the TCP layer to set up the connection and send the file. The TCP stack divides the file into data packets, numbers them and then forwards them individually...
Establishing a TCP connection: the three-way handshake Establishing a TCP connection requires that both the client and server participate in what is known as athree-way handshake. The process can be broken down as follows: A client sends the server a SYN packet—a connection request from its ...
(APPN), as a Low Entry Network (LEN) node, or as a Branch Network node using High Performance Routing over Internet Protocol (HPR/IP). Administrators can deploy SNA applications on Windows computers using the HIS client that connects to the HIS server via TCP/IP, supporting required SNA ...
in aSYN flood attack, an attacker takes advantage of the way the TCP protocol works. They send SYN packets to repeatedly initiate aTCP handshakewith a server, until the server is unable to provide service to legitimate users because its resources are tied up by all the phony TCP connections....
The client and server can now communicate by writing to or reading from their sockets. Definition: A socket is one endpoint of a two-way communication link between two programs running on the network. A socket is bound to a port number so that the TCP layer can identify the application ...
TCP None; obsolete WireGuard 256-bit AES encryption UDP Best option for early adopters When an attempted connection is made to the VPN provider's remote server, the server authenticates the user and creates an encrypted tunnel for their data to run through. The data that funnels throu...
DNS, or the Domain Name System, is a protocol within the TCP/IP standard. DNS serves an essential role of translating the human-readable domain names—for example: www.wideworldimports.com—into a known IP address. IP addresses enable computers and network devices to identify and route ...