COMPUTER THREATS SECURITY
WHAT IS A FIREWALL IN NETWORK SECURITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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25
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110
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119
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143
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161
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Detailed explanation-1: -SNMP ports are utilized via UDP 161 for SNMP Managers communicating with SNMP Agents (i.e. polling) and UDP 162 when agents send unsolicited Traps to the SNMP Manager.
Detailed explanation-2: -SNMP is a request/response protocol. UDP port 161 is its well-known port. SNMP uses UDP as its transport protocol because it has no need for the overhead of TCP.
Detailed explanation-3: -SNMP servers open port 161. They listen for and respond to incoming client requests and commands and are also able to issue alerts, called “traps” in response to specified events.
Detailed explanation-4: -Used by various devices and applications (including firewalls and routers) to communicate logging and management information with remote monitoring applications. Typically, SNMP agents listen on UDP port 161, asynchronous traps are received on port 162.