I have an issue with the share folders configuration; I am going to explain the scenario.
I have 4 servers (Windows 2003 Standard R2)(web server, app server, db server, backup server) and my computer, the web, app and backup server are in the same vlan so there is no firewall between them, and I can connect to all the servers with my computer via VPN with full access.
I need a share folder into all servers but when I try to access from my computer or backup server to the web, app and DB servers it is requesting username and password and keeps doing without permit the access. In the netstat command it said that the connection is timeout but if I made telnet to these servers using port tcp 445 it connect without issues so is no a firewall issue. Also I was able to connect in the other way (from app, web and DB to the backup and my computer).Besides I can connect from the app and the web to the DB in both way from and to, so the issue is only with Backup and my computer to the others servers. I am trying to access them by \\ipaddressoftheserver
Also I am attaching a picture of the network traffic, the red lines means that i can't access the share folders, black lines means that i can access them.