Update:

Since I changed the nsrport range, I'm not able to stop and start the networker 
service on the networker client side appropriate.

I found this in the daemon.raw:
61233 08/27/12 09:53:56  2 0 0 1090525504 21751 0 networker client nsrexecd 
Failed to bind socket for NSR authentication service: Operation not permitted
61233 08/27/12 10:06:22  2 0 0 1090525504 25247 0 networker client nsrexecd 
Failed to bind socket for NSR authentication service: Cannot assign requested 
address
61233 08/27/12 13:27:24  2 0 0 1090525504 3556 0 networker client nsrexecd 
Failed to bind socket for NSR authentication service: Operation not permitted

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