Event ID - 143

Port No143
Service Nameimap
RFC Doc0
ProtocolTCP
DescriptionAllows clients to remotely access mailbox and folders
Reference LinkPort No:143 And Service Name:imap
AttackBlock port 143, users checking email remotely should use SSL encrypted IMAP connections (available in almost all clients).
Inbound connections to port 143 are typically users remotely checking email however they can be password guessing attempts, failed logins should be monitored.

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