Different Types Monitoring System:-
DNS - Monitors the availability of Domain Name Servers (DNS) and verifies translation of domain names to appropriate IP addresses.
FTP - Tests and monitors the availability of File Transfer Protocol (FTP) servers to accept user logins and facilitate file transfers.
PING - Monitors and verifies ping requests to ensure IP-level connectivity. Ping can be used to monitor connectivity for servers, routers and firewalls.
POP3 - Monitors designated Post Office Protocol (POP) servers by verifying availability and specified mail user logins.
PORT - Monitors connectivity to custom Internet services from specified ports.
SMTP - Connects to mail servers using Simple Mail Transfer Protocol (SMTP) and verifies SMTP functionality.