Search results
Results from the WOW.Com Content Network
Port forwarding via NAT router. In computer networking, port forwarding or port mapping is an application of network address translation (NAT) that redirects a communication request from one address and port number combination to another while the packets are traversing a network gateway, such as a router or firewall.
This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for bidirectional traffic. TCP usually uses port numbers that match the services of the corresponding UDP implementations, if they exist, and vice versa.
Cloudflare timed out contacting the origin server. 523 Origin Is Unreachable Cloudflare could not reach the origin server; for example, if the DNS records for the origin server are incorrect or missing. 524 A Timeout Occurred Cloudflare was able to complete a TCP connection to the origin server, but did not receive a timely HTTP response.
Cloudflare was founded in July 2009 by Matthew Prince, Lee Holloway, and Michelle Zatlyn. [2] [8] [9] Prince and Holloway had previously collaborated on Project Honey Pot, a product of Unspam Technologies that served as some inspiration for the basis of Cloudflare. [10]
Support for HTTP/3 was added to Cloudflare and Google Chrome first, [16] [17] and is also enabled in Firefox. [18] HTTP/3 has lower latency for real-world web pages, if enabled on the server, and loads faster than with HTTP/2, in some cases over three times faster than HTTP/1.1 (which is still commonly only enabled).
Using the reverse proxy of a third party (e.g., Cloudflare, Imperva) places the entire triad of confidentiality, integrity and availability in the hands of the third party who operates the proxy. If a reverse proxy is fronting many different domains, its outage (e.g., by a misconfiguration or DDoS attack) could bring down all fronted domains. [7]
QUIC was developed with HTTP in mind, and HTTP/3 was its first application. [35] [36] DNS-over-QUIC is an application of QUIC to name resolution, providing security for data transferred between resolvers similar to DNS-over-TLS. [37]
Cloudflare distributes a patch for nginx that integrates the quiche HTTP/3 library into it. [38] Microsoft IIS support for HTTP/3 is enabled natively with Windows Server 2022/Windows 11. [39] HAProxy supports HTTP/3 over QUIC since version 2.6 released on 31 May 2022. [40] [41] Nimble Streamer supports HTTP/3 since 4.1.8-1 [42] for HTTP-based ...