Hi,
Connect the DNS-323 to the router via ethernet.
Log into the router to find out the IP address for the DNS-323 and the DHCP IP address range.
Log into the DNS-323 and give it a static IP address that is outside the DHCP range of the router.
eg: If the router IP address is 192.168.1.1 (this may vary with different model routers), and the DHCP range is for example 192.168.1.2 to 192.168.1.100, give the DNS-323 an unused fixed IP address between 192.168.1.101 and 192.168.1.254.
Let's say you have given the DNS-323 the fixed IP address 192.168.1.200, in finder, click on "go", "connect to server", enter smb://192.168.1.200 in the "server address" field and then click "connect".
If you have a password protected directory that you want to connect to, change the server address to suit. eg: smb://192.168.1.200/directoryname
In Chronosync refer to the DNS-323 by IP address.
Good luck!