What protocol is used by web servers and on which port ?
ur 1
HTTP is the hyper text transfer protocol . The port used by HTTP is port 80 . The HTTP is the protocol of application layer.
To load up web pages we use the HTTP protocol which runs on port 80 and HTTPS port 443. Of course there are many more protocols than just that. I will list some below... For associating host names... DNS Port 53 For web based email. IMAP port 143
LDAP uses port 389 for encrypted traffic.
RIP uses UDP protocol with port number 520
Port 3389 is the only port you need to open. Windows will attempt to stream sound through User Datagram Protocol (UDP) first. If no port is available for UDP, sound will stream through a virtual channel in Remote Desktop Protocol, which uses port 3389. http://www.microsoft.com/windowsxp/using/mobility/rdfaq.mspx
SMTP uses port number 465 by default. It stands for Simple Mail Transfer Protocol. It is the protocol for sending emails in a network.
HTML itself doesn't use a port. You can transfer an HTML document over any port you'd like. The Hyper-text Transfer Protocol (HTTP) however, does have a standard, non-secure port: 80. Web servers listen by default at :80. If they're configured to listen for secure HTTPS connections, they will also listen on :443. Configuring the server to listen on a different port is often used to run two sites over the same domain name, and is pretty common on intranets.
The BOOTP protocol uses multiple protocols, starting with port 67.
Http - Hyper Text Transport Protocol
Port Number
Web servers serve content over the protocol HTTP which runs on port 80. They also can use HTTPS which runs over port 443. HTTPS connections are encrypted to prevent unauthorized persons from seeing the HTTP traffic. HTTPS is or should always be used when using services such as online banking and E-commerce web sites. HTTPS is actually just HTTP traffic that is encrypted before being sent over the internet.
Hyper Text Transfer Protocol (HTTP)