PROTOCOLS: FTP Traffic on Non-standard Port
This signature detects the FTP protocol over nonstandard ports. Attackers can install FTP servers on nonstandard ports to evade detection when uploading tools to a compromised server. Some applications also legitimately run FTP on nonstandard ports.
Short Name
PROTOCOLS:PORT:FTP
Severity
Info
Recommended
False
Recommended Action
None
Category
PROTOCOLS
Keywords
FTP Non-standard Port Traffic on
Release Date
05/09/2007
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
Port
TCP/0-20,22-65535
False Positive
Rarely