Yes netlog is an example provided within Windows CE Platformbuilder.
When you look at the source code, you will see that netlog is a 'driver' DLL and netlogctl is used to control the DLL.
I fear that architecture is not to be re-build using C#. You cannot write native driver DLLs using C#.
BUT, you can also use iphlpapi, see my netstat example: http://www.hjgode.de/wp/2013/09/24/mobile-development-netstat-know-your-devices-open-ports/.
You get an overall stat:
======= TCP statistics ========
Retransmission timeout (min/max): Van Jacobson's Algorithm: 300/120000
max connnections: -1
active open: 69
passive open: 196
failed attempts: 0
established resets: 243
current established: 20
segments in: 134380
segments out: 130900
retransmitted segments: 175
in errors: 0
out resets: 861
num connections: 26
======= UDP statistics ========
in datagrams: 13771
in errors: 0
num ports: 3353
num addresses: 7
out datagrams: 887