It is placed between two or more networks and protects data and equipment from unauthorized access.
syslog
EMI
RFI
It connects multiple networks that are geographically separated.
fiber optic
access point
switch
wireless access point
router
IP phone
access point
green and orange
Z-Wave
cloud-based network controller
RJ-11
LEO
Bluetooth
7
802.11n
patch panel
line of sight wireless
application, transport, internet, network access
the use of an analog modem to transmit data over voice telephone lines
DSL modem
LDAP
SSH
Switch