My network has 2 subnets /25 and Linux server in each subnet. One of the subnets contains a Windows computer which is used for managing Linux servers via SSH; but there is problem with firewall on this computer.The firewall allows communication within the same subnet but blocks communication into (or response coming back?) the second subnet.
I have tried to set inbound and outgoing rule, allowing PuTTY by wizard in main firewall control panel and nothing has worked me. Please tell me what I have done wrong or how to set up it correctly.
I have tested that when firewall is completely disabled, communication works.
I have tested that Windows blocks all ports. I can't use FTP or Remote Desktop Protocol either.
Wireshark shows black lines with
TCP Surious Retransmission and
TCP Dup ACK. Between these lines are black ICMP redirects.