TFTP: REQUEST: Unexpected ACK

This protocol anomaly is an unexpected ACK sent from a client. Normally, ACKs are sent by the client when the client attempts to read a file from the server and respond to the DATA messages sent by the server. This can indicate a tunneling attempt.

Short Name
TFTP:AUDIT:C2S-UNEXP-ACK
Severity
Info
Recommended
False
Recommended Action
None
Category
TFTP
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

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