Urgent regarding Firewall...Net8 Administration
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Thread: Urgent regarding Firewall...Net8 Administration

  1. #1
    Join Date
    Feb 2001
    Posts
    15
    Hi Friends,
    I have a problem in connecting to the server. It says no listener found.
    * Server TCP/IP is in different Masknet.
    * Client TCP/IP is in different Masknet.

    1) The reason is the client is connected to server through firewall. The default port is 1521. Firewall is not enabling this port number. I tried by giving another port number 1526. For this no error at firewall, but not connecting to the Server.

    2) Also when the request comes from client .. at firewall i am able to see that client is generating different ports dynamically. So i would like to know, how can i connect to the Server with this type different dynamic ports.

    3) How does the Oracle client from DMC connects to the Oracle server behind the Firewall. How configuration should be made...?

    This is very ugent. Please help me.

    Thanks in advance,
    Yajman

  2. #2
    Join Date
    Feb 2001
    Posts
    123
    A similar question was asked earlier this week - see the thread at

    [url]http://www.dbasupport.com/forums/showthread.php?threadid=6813[/url]

    HTH,

    David.

  3. #3
    Join Date
    Feb 2001
    Posts
    15
    Hi Dave,
    I could not found the solution with the link u have mentioned. My problem is, if a client in DMZ network connects to Oracle Server behind firewall is not enabling the port 1521 at firewall. But i am able to connect to the server, if i bypass the firewall. Please give the solution.

    Thanks in advance,
    Yajman

  4. #4
    Join Date
    Mar 2000
    Location
    westboro, ma, USA
    Posts
    14
    are you on windows NT ? In which case you go to the registry of Oracle server and add an entry under Oracle use_shared_sockets=TRUE.
    Rajesh

  5. #5
    Join Date
    Mar 2000
    Location
    Atlanta, GA,USA
    Posts
    155
    Take a look at this URL: [url]http://www.dbasupport.com/forums/showthread.php?threadid=6316[/url]

    Sergey.

  6. #6
    Join Date
    Dec 2000
    Posts
    14
    Hi,


    I had this problem earlier and fixed this problem.

    Add one registry entry at NT side that

    USE_SHARED_SOCKET = TRUE

    This will take of firewall issues. This one I found one document in metalink that issues with firewall and WIN NT.
    You can check this one using firewall as a keyword.

    Good luck
    Subbarao Manchikanti

  7. #7
    Join Date
    Feb 2001
    Posts
    15

    Thanks and Clarification...?

    Hi ,
    Thanks for the advice. Where to register this parameter.
    USE_SHARED_SOCKET = TRUE
    whether at Oracle Server(NT) or Client Side m/c or firewall server.

    Please inform me as soon as possible

    Thanks in advance,
    Manjunatha S Yajman

  8. #8
    Join Date
    Jan 2001
    Posts
    318
    I had similar problem too. I changed TCP/IP to Oracle Named Pipes and it started to work. I have win NT here.
    This may be a wrong approach to change tcp/ip to named pipe, but looks like I am not have any problems with it.
    Sonali

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