We are facing a communication problem between the public and our private network.
We have a Linux based web server behind a firewall and an internet router. As part of some integration, our web portal team is trying to Telnet the public IP of an another web portal from these Linux web servers on port 80, but the connection is closed by remote host just in time it says connected.
But same is successful while we try it from a Windows based web server in our network. Everything seems fine, the firewall is passing the traffic.
Does it matter if one end server is running Linux and other end is a Windows server. Because the public IP application server is running Windows server. what are the key points to meet the requirement to make the communication succeed.
Refer the below error logs.
]$ telnet 126.96.36.199 80 Trying 188.8.131.52... Connected to 184.108.40.206 (220.127.116.11). Escape character is '^]'. Connection closed by foreign host.