Signature Detail
Short Name |
TFTP:AUDIT:S2C-INVALID-OPCODE |
|---|---|
Severity |
Info |
Recommended |
No |
Category |
TFTP |
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+ |
TFTP: REPLY: Invalid Opcode
This protocol anomaly is an invalid opcode sent from a TFTP server. Normally, the server sends DATA, ACK, or ERROR messages, but not READ or WRITE requests. This can indicate a malicious server or a tunneling attempt.
Extended Description
None
References