15
SMTP
provides
a
direct end-to-end
mail
delivery,
which
is
rather
unusual;
most
mail
systems
use store-and- forward protocols. The e- mail servers run either Post Office
Protocol (POP) or Internet Mail Access Protocol (IMAP) to distribute e- mail
messages to
users [6].
2.2.1.3 SNMP
SNMP stands for Simple Network Management Protocol. SNMP is a standard protocol,
part of the TCP/IP (Transmission Control Protocol/Internet Protocol) suite, used to
manage and monitor nodes on a network. The accompanying illustration shows how the
SNMP manager
and
agent
are
organized.
SNMP
is
a
communications
protocol
for
collecting information about devices on the network, including hubs, routers, and bridges.
Each piece of information to be collected about a device is defined in a Management
Information Base (MIB). SNMP uses UDP (User Datagram Protocol) to send and receive
messages on the
network. [6]
2.2.1.4 HTTP
HTTP stands for Hypertext Transfer Protocol. The command and control protocol used to
manage communications between a Web browser and a Web server [6].
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