Digitus Internet Camera DN-16021 User Manual

 

105

The most popular LAN communication technology. 
There are a variety of types of Ethernet, including 10 
Mbps (traditional Ethernet), 100 Mbps (Fast Ethernet), 
and 1,000 Mbps (Gigabit Ethernet). Most Ethernet 
networks use Category 5 cabling to carry information, 
in the form of electrical signals, between devices. 
Ethernet is an implementation of CSMA/CD that 
operates in a bus or star topology. 

 
 

 

Fast Ethernet, also called 100BASE-T, operates at 10 
or 100Mbps per second over UTP, STP, or fiber-optic 
media. 

 

Firewall is considered the first line of defense in 
protecting private information. For better security, data 
can be encrypted. A system designed to prevent 
unauthorized access to or from a private network. 
Firewalls are frequently used to prevent unauthorized 
Internet users from accessing private networks 
connected to the Internet, especially Intranets all 
messages entering or leaving the intranet pass through 
the firewall, which examines each message and blocks 
those that do not meet the specified security criteria.   

 
 

 

A gateway links computers that use different data 
formats together. 

 

Groups consist of several user machines that have 
similar characteristics such as being in the same 
department.