Yes.
For customers with a source code license the easiest way might be to build the server with extra debugging:
make <normal FLAGS> DEBUG=1 DEBUG2=1
You can also alter the way netconf-subsystem-pro is launched
in the sshd_config file:
netconf-subsystem-pro : default usage for SSH
netconf-subsystem-pro -f file | -filename file : set the trace file
netconf-subsystem-pro -t level | -trace level : set the trace level
netconf-subsystem-pro -p proto | -protocol proto : set the protocol
If -t=3 (trace-level=3) is used, then you will get a separate trace file
for each session instead of deleting them as the session closes.
You will see files in the /tmp directory, like /tmp/subsys-err.8456.log
The PID number of the process will be used for the number part.
These files are used by default if no -f option is given