SNMPTRAP: Unexpected Reply
This protocol anomaly triggers when it detects a SNMP Manager reply. SNMP trap is a one-way messaging protocol and the server should not send replies. This can indicate tunneling over the SNMP trap port.
Extended Description
A reply to an SNMP TRAP message is a protocol anomaly. It could indicate that a nonstandard SNMP management station is being used on the server side, or that other software is using the SNMP service port for tunneling.
Short Name
SNMPTRAP:ERROR:UNEXPECTED-REPLY
Severity
Major
Recommended
True
Recommended Action
Drop Packet
Category
SNMPTRAP
Release Date
04/22/2003
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3324
False Positive
Unknown