Network Services
Server disks on a file server configured to be accessed across a network.
What is a fileshare?
A secured terminal access protocol used for remote connectivity.
What is Secure Shell (SSH)?
A system no longer supported by its vendor.
What is a legacy system?
When a port on a switch or network interface card continuously transitions between up and down states.
What is port flapping?
The application protocol underpinning file and printer sharing on windows networks, generally over port 445.
What is Server Message Block (SMB)?
A protocol used to access and update directories like those that might be used in Active Directory.
What is Lightweight Directory Access Protocol (LDAP)?
A server designed to forward requests from a client.
What is a proxy server?
One specific range of IP addresses that are used exclusively for communication on a LAN when DHCP was unable to lease an IP address.
What is the automatic private IP addressing range (APIPA)?
The protocol used to send emails (not manage).
What is Simple Mail Transfer Protocol?
A protocol used to download and delete an email from a mail server.
What is Post Office Protocol (POP3)?
A device used to distribute network traffic across multiple servers to prevent outages and reduce congestion.
What is a load balancer?
Real time services like voice and video.
What is Voice over IP (VoIP)?
The legacy version of SSH that uses port 23.
What is Telnet?
A mail access protocol used to access emails from multiple devices.
What is Internet Mail Access Protocol (IMAP)?
An electronic device designed to perform a specific, dedicated function, like a microcontroller in an intravenous drip-rate meter.
What is an embedded system?
When switches, APs, and routers prioritize specific traffic, like voice, video, or games, over busty data, like HTTP requests.
What is Quality of Service (QoS)?
A legacy protocol that is the framework for management and monitoring network devices, typically working on ports 161 and 162.
What is Simple Network Management Protocol (SNMP)?
An obsolete protocol used in Windows networks to address each other by name and establish sessions for other protocols using ports 137 - 139.
What is the Network Basic Input / Output System (NetBIOS)?
A system that takes the place of a control server in a large scale, multiple site industrial control system.
What is a supervisory control and data acquisition (SCADA) system?
An index calculated from the signal strength level of a wireless connection.
What is a Received Signal Strength Indicator (RSSI)?