Signature Detail
Short Name |
SNMPTRAP:ERROR:UNEXPECTED-REPLY |
|---|---|
Severity |
High |
Recommended |
Yes |
Recommended Action |
Drop Packet |
Category |
SNMPTRAP |
Release Date |
2003/04/22 |
Update Number |
1213 |
Supported Platforms |
idp-4.0+, isg-3.0+, j-series-9.5+, mx-9.4+, srx-9.2+, srx-branch-9.4+, vsrx-12.1+ |
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.
References