Using remote client cannot enter the server-side

Publication Date:  2012-09-17 Views:  82 Downloads:  0
Issue Description
Network management servers(Solaris operating system)and clients compose DCN network connections by some routers ,the clients cannot enter the server-side.
Alarm Information
No
Handling Process
  Step 1 Check the firewall setting in current network
  Step 2 Open up all the network management using port on the firewall.
Root Cause
 The problem of network between clients and servers
  The clients and servers do not use the same communication protocols
  The ports of clients and servers are screened by firewall or virus
  Orientation:
  It can ping server-side by client successfully.
  Clients use telnet server IP 9800 or telnet server IP 9803,it prompts the connection is failed.
  Server-side local computer’s client can enter server-side
  It cannot enter server by using the remote clients
  We can connect the server-side machine and client machine to the same router, clients use telnet server IP 9800 or telnet server IP 9803,client can enter server-side,so we can judge the ports of clients and servers are screened by firewall or virus.
Suggestions
 Taking notice of the firewall between client and server and Ensuring that the correlative ports can be opened normally.

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