WINDOWS NT 와 FIREWALL 관련

제품 : SQL*NET
작성날짜 : 1998-11-26
WINDOWS NT 와 FIREWALL 관련
===========================
(일반적으로 SQL*NET listener 가 1521 Port 를 사용한다고 가정)
Windows NT 에서 Firewall 이 설치된 경우 1521 Port 를 열어주었다고
하더라도 클라이언트에서 접속시 ORA-12203 error 가 발생하게 된다.
이유는 아래의 그림과 같다.
1. 클라이언트가 접속 시도를 한다.
2. Listener 가 Redirect connect 를 하도록 한다.
이때 주어지는 포트는 사용하지 않는 Random Port 이다.
3. 클라이언트에서 재접속을 한다. (이때 사용하는 port 가 문제가 된다)
그림을 잘 맞춰주세요.
------ <-------2-----2---- ---------
|client| |listener |(port=1521)
------ --------1-----1----> ---------
|
----------3-----3------> ---------
| oracle |(port=xxxx)
해결방법은 두가지가 있다.
1. SQLNet proxy 가 포함된(Build into) Firewall 을 사용하는 것이다.
먼저 SQLNet proxy 가 Listener 와 다른 포트를 이용해서 기동되어야 한다.
(보통 1610 을 사용)
아래 그림과 같이 접속이 가능하게 된다.
firewall
||
------ <----2--------||-----2------ ---------
|client| || |listener |(port=1521)
------ ----1------> proxy --1------>---------
A \ /||\
| -----3-------/ || \---3------>---------
| || | oracle |(port=xxxx)
----------4---------||-----4----------------+
2. 8.0.X 버전에서 지원되는 기능을 사용한다.
레지스트리에 있는 USE_SHARED_SOCKET 이란 parameter 를 사용한다.
Firewall 의 종류에 전혀 구애받지 않는다.
Listener Port 만 열어주면 된다.
Parameterm 의 Syntax 는
USE_SHARED_SOCKET=TRUE
이다.
레지스트리에 각 DB version에 따라 아래와 같이 존재한다.
\\HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE (Relases 8.0)
\\HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\HOME<#> (Release 8i )
이 파라미터의 기능은 1521 Port 만을 사용하는 것이다.
현재 session들이 살아있는 상태에서 listener가 stop 될 수는 있지만
다시 start되기 위해서는 현 session들을 모두 닫아야 한다.

Hi,
How have you configured Windows Firewall rules on the Server?
Would you please post out the log which indicates that the traffic was blocked?
Best Regards,
Amy

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    Error:    Disconnected from server: ECONNABORTED - Connection aborted
    Error:    Failed to retrieve directory listing
    However, if I turn off the Windows firewall it works and I can use FileZilla and other FTP clients just fine.
    My question is, rather than turning off the firewall altogether, how can I make an exception just for FTP, or just for FileZilla. I believe ports 20 and 21 are used depending on whether the connection is active or passive.
    It isn't just me either. I was trying to help somebody else who is experiencing the exact same thing in his Windows 7. If he turns off the firewall completely FTP works. Otherwise it's the same error. He is on a different network altogether, in a different
    country. Neither of us are behind proxy servers. In my case, it's just my home network.
    I tried the following so far:
    1. Make sure that FileZilla was listed as allowed in the firewall control panel. It was by default, so that didn't help.
    2. Creating an "inbound rule" in the advanced settings for ports 20-21. That didn't help either.
    Just completely turning off the firewall lets it work.
    Any suggestions?
    Thanks,
    Doug

    Hi doug,
    What is your current situation? Have you solved this issue?
    Here I list the several solution:
    Use the network monitor the capture package related to FTP as arnavsharma mentioned.
    Take a look at the article as Sebastian and Sameer Gawde mentioned.
    http://technet.microsoft.com/en-US/en-en/library/dd421710%28v=ws.10%29.aspx#bkmk_1
    Best regards,
    Fangzhou CHEN
    Fangzhou CHEN
    TechNet Community Support

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