ScreenOS Cookbook by Stefan Brunner Vik Davar David Delcourt Ken Draper Joe Kelly & Sunil Wadhwa

Author:Stefan Brunner, Vik Davar, David Delcourt, Ken Draper, Joe Kelly & Sunil Wadhwa
Language: eng
Format: epub
Tags: COMPUTERS / Internet / Security
ISBN: 9780596159252
Publisher: O’Reilly Media
Published: 2008-12-16T16:00:00+00:00

H323

H.323

TCP/1720 for H.225 call control messages

H.323, based on the ITU-T Q.931 recommendation, is a suite of protocols used by audio and video communication sessions. IP telephony systems have used the H.225 component extensively for call control messages such as call setup and teardown.

HTTP

HyperText Transfer protocol

TCP/80

HTTP requests generated by web browers are provided HTTP responses from web servers with web content in formats such as HTML and XML. Standards, such as the HTTP/1.1 specification, define the list of permissible HTTP commands and their boundaries

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