Glossary of Technical Terms
2G is the second generation of telecommunication technology for mobile networking.
3G is the third generation of telecommunication technology for mobile networking.
403 (403 Forbidden) is the standard HTTP error code that occurs when a server will not allow a
Web browser to access the file being requested.
404 (404 Not Found ) is the standard HTTP error code that occurs when a server cannot find the
file being requested.
ADSL (asymmetric digital subscriber line) is a technology that allows data to be sent over existing
copper telephone lines.
Bandwidth is the amount of data that can flow in a given time.
Block page is the page delivered to the user when a request for a Web site is filtered, or blocked.
Block pages take many forms and may be disguised as benign error pages or may bear the ISP’s
logo and further explanation of the block.
CCTV (closed circuit television) is the use of video cameras to transmit video from a specific place
to a limited set of monitors. Signals for CCTV are not openly transmitted.
Circumvention refers to the general concept of using proxies and other tools to bypass Internet
filtering.
Deep packet inspection is a form of computer network packet filtering that examines the data
part (and possibly also the header) of a packet as it passes an inspection point, searching for protocol noncompliance, viruses, spam, intrusions, or predefined criteria to decide if the packet can
pass or if it needs to be routed to a different destination, or for the purpose of collecting statistical
information.
DNS (domain name system) is a hierarchical naming system for computers, services, or any resource participating in the Internet.
DNS tampering (domain name system tampering) is a method of blocking communication by preventing the conversion of domain names into IP addresses, effectively blocking access to the
requested site.
2G is the second generation of telecommunication technology for mobile networking.
3G is the third generation of telecommunication technology for mobile networking.
403 (403 Forbidden) is the standard HTTP error code that occurs when a server will not allow a
Web browser to access the file being requested.
404 (404 Not Found ) is the standard HTTP error code that occurs when a server cannot find the
file being requested.
ADSL (asymmetric digital subscriber line) is a technology that allows data to be sent over existing
copper telephone lines.
Bandwidth is the amount of data that can flow in a given time.
Block page is the page delivered to the user when a request for a Web site is filtered, or blocked.
Block pages take many forms and may be disguised as benign error pages or may bear the ISP’s
logo and further explanation of the block.
CCTV (closed circuit television) is the use of video cameras to transmit video from a specific place
to a limited set of monitors. Signals for CCTV are not openly transmitted.
Circumvention refers to the general concept of using proxies and other tools to bypass Internet
filtering.
Deep packet inspection is a form of computer network packet filtering that examines the data
part (and possibly also the header) of a packet as it passes an inspection point, searching for protocol noncompliance, viruses, spam, intrusions, or predefined criteria to decide if the packet can
pass or if it needs to be routed to a different destination, or for the purpose of collecting statistical
information.
DNS (domain name system) is a hierarchical naming system for computers, services, or any resource participating in the Internet.
DNS tampering (domain name system tampering) is a method of blocking communication by preventing the conversion of domain names into IP addresses, effectively blocking access to the
requested site.