hi timk74 - thanks for the info. Unfortunately it did not work.
I do have an update though - i think it is a restriction at the ISP. I tried connecting to another ISP and it seems to be working fine: but as soon as I move back to the other ISP, it seems blocked. Funny though that my ETH mining on miningpoolhub (port 17020) is not affected in any way
![Shocked](https://bitcointalk.org/Smileys/default/shocked.gif)
* VERSIONS: XMRig/2.6.2 libuv/1.20.2 gcc/7.3.0
* HUGE PAGES: available
* CPU: Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz (1) x64 AES-NI
* CPU L2/L3: 1.5 MB/12.0 MB
* THREADS: 6, cryptonight, av=0, donate=1%
* POOL #1: stratum+tcp://europe.cryptonight-hub.miningpoolhub.com:20580
* API BIND: 0.0.0.0:3334
* COMMANDS: hashrate, pause, resume
[2018-05-09 19:09:01] READY (CPU) threads 6(6) huge pages 6/6 100% memory 12.0 MB
[2018-05-09 19:09:03] use pool europe.cryptonight-hub.miningpoolhub.com:20580 172.104.126.71
[2018-05-09 19:09:03] new job from europe.cryptonight-hub.miningpoolhub.com:20580 diff 40000 algo cn/1
[2018-05-09 19:09:33] new job from europe.cryptonight-hub.miningpoolhub.com:20580 diff 40000 algo cn/1
[2018-05-09 19:09:36] accepted (1/0) diff 40000 (509 ms)
Can I please ask someone to share their Windows Firewall Config for port 20580?
Run the following command in admin command line (with correct path to NsCpuCNMiner64.exe) or paste code to .bat file and run it as administrator:
netsh advfirewall firewall add rule name="Claymore CryptoNote CPU Miner" dir=in action=allow program="C:\blabla\NsCpuCNMiner64.exe" enable=yes