How to find out the number of current connections in windows 2012 R2?

Question

iptables

How to solve the following tasks in windows 2012 R2:
1) find out the number of current connections on ports 443 and 80
2) find out from which IP addresses the server receives requests
3) block unwanted IP addresses from which requests come
In linux, this is done like this:

netstat -na | grep ':443 '
iptables -A INPUT -s IP-j DROP

How is this done in window 2012? Is it possible to get by with standard windows tools for these purposes, or do I need to install any programs?

Answer 1

netstat -na | findstr ^:443;)

netsh advfirewall firewall add rule name="Block IP" dir=in interface=any action=block remoteip=192.168.1.123/32