I'm setting up an infrastructure based on Windows Server 2012. The firewall is turned off and I can't access the Domain controller to check for the group policy.

I'm experiencing some connection problem between servers. All the servers are running a site on the TCP Port 80 and I check with netstat that the web server is binding on every Ip of the servers.

If i try to telnet from the server itself on the port 80 it works (using DNS name) if I try same telnet from another machine I get connection failed.

The DNS works, the ping is successfull, the servers are on the same subnet, the firewall is turned off (even though windows advanced firewall says that some settings can be managed by the System Administrator, i guess group policy).

I don't know how to troubleshoot further. Do you have any idea? Is that possible that the FW looks turned off but there are some group policy blocking the connections? (I also check group policy->Administrative Template->Network Connections-> Windows FW everything is not configured)

I need some hint on how to keep troubleshooting such a problem.