Skip to main content

Function of Application Layer

Function of the Application Layer (Layer-7)

The application layer is responsible for integrating network services with the operating system. The application layer really provides the interface between the applications and the rest of the network. Different protocols are associated with the application layer, such as HTTPS, HTTP, TELNET, FTP, SMTP and many others. We talk about these protocols as being in the application layer, but in reality, most of these protocols actually extend down through the session layer. 

Comments

Post a Comment

Popular posts from this blog

Active and Passive FTP

Active and Passive FTP The FTP server may support Active or Passive connections, or both.  In an Active FTP connection, the client opens a port and listens and the server actively connects to it.  In a Passive FTP connection, the server opens a port and listens (passively) and the client connects to it.  You must grant Auto FTP Manager Access to the Internet and to choose the right type of FTP Connection Mode. Most FTP client programs select passive connection mode by default because server administrators prefer it as a safety measure.  Firewalls generally block connections that are "initiated" from the outside.  Using passive mode, the FTP client is "reaching out" to the server to make the connection.  The firewall will allow these outgoing connections, meaning that no special adjustments to firewall settings are required. If you are connecting to the FTP server using Active mode of connection you must set your firewa...
Post a Comment
Read more