SMTP: Invalid Command Sequence
This protocol anomaly triggers when it detects an invalid client-server-client sequence of SMTP commands, which normally is not issued by an SMTP client or server. Detecting this sequence can indicate an attacker is manually trying to exploit your SMTP server.
References
Short Name
SMTP:AUDIT:REQ-INVALID-CMD-SEQ
Severity
Info
Recommended
False
Recommended Action
None
Category
SMTP
Release Date
08/27/2003
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