Traffic on port 3400 isn't declared as red traffic in e.g. top services report. It's declared as CSMS2 traffic.
It assume that this is releated to /etc/services:
csms2 3400/tcp # CSMS2
csms2 3400/udp # CSMS2
Webadmin traffic is declared correctly and the /etc/services has an entry:
webadmin 4444/tcp # KRB524
webadmin 4444/udp # KRB524
# PROBLEM krb524 assigned the port,
# PROBLEM nv used it without an assignment
nv-video 4444/tcp # NV Video default
nv-video 4444/udp # NV Video default
The same behavior affects the other astaro specific traffic:
4422/tcp -> ACC Gateway Manager
4433/tcp -> ACC Connection
Regards,
Marco