RSH: Illegal STDERR Port
This protocol anomaly triggers when it detects an RSH connection with a specified standard error port number that is not in the required range (512 to 1023, inclusive). This can indicate someone is using a non-standard RSH client or a compromised host.
References
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