-----Ursprüngliche Nachricht----- Von: Stefan Jahnke [mailto:[EMAIL PROTECTED]] Gesendet: Mittwoch, 12. Februar 2003 13:14 An: Multiple recipients of list ORACLE-L Betreff: Oracle connection through firewall
Hi everybody Since I'm a networking dummy, here's a question that might be easy to answer: I have to setup client access (Oracle Net) to an Oracle Database through a firewall. So far, I only know that the listener listens on a dedicated port (like 1521). After a client requested a connection, a dedicated server process is started (this is not an MTS environment) and the listener is informed about the port the server process wants to use to communicate with the client. The listener sends this information to the client and from thereon, the client can communicate with the server through this port. Now, I'm wondering about what ports do I have to keep open on the firewall between client and Oracle server ? &&>>>yes, you have to do this. 1521 is probably not enough, since this let's the client only reach the listener itself. What happens then ? Can I restrict Oracle Net to a range of ports for the server processes to be used (didn't find that in the fine manual) ? &&>> As far as I know OracleNet can not do this for you- this is an operating system issue. This means you should configure your OS regarding the acceptable range of local ports, but this range will be for all servers on this host, not only for Oracle. For more info, you can follow this link "http://en.tldp.org/LDP/solrhe/Securing-Optimizing-Linux-RH-Edition-v1.3/cha p6sec70.html" (Linux specific, although the other OSes should have similar parameters). Then you should configure your firewall to accept from outside the configured range of ports. But would make the existence of the firewall pointless. If so, how is this done ? Or do I have to go with Oracle connection manager ? &&&&>>> Definitely. Best regards. Milen Kulev Regards, Stefan Jahnke Consultant BOV Aktiengesellschaft Voice: +49 201 - 4513-298 Fax: +49 201 - 4513-149 mailto: [EMAIL PROTECTED] Please remove nospam to contact me via email. visit our website: http://www.bov.de subscribe to our newsletter: http://www.bov.de/presse/newsletter.asp Sicherheitsluecken mit IT-Security-Konzepten von BOV effizient schliessen! Weitere Informationen unter +49 201/45 13-240 oder E-Mail an mailto:[EMAIL PROTECTED]. Wie Sie wissen, koennen ueber das Internet versandte E-Mails leicht unter fremden Namen erstellt oder manipuliert werden. Aus diesem Grunde bitten wir um Verstaendnis dafuer, dass wir zu Ihrem und unserem Schutz die rechtliche Verbindlichkeit der vorstehenden Erklaerungen und Aeusserungen ausschliessen. As you are probably aware, e-mails sent via the Internet can easily be copied or manipulated by third parties. For this reason we would ask for your understanding that, for your own protection and ours, we must decline all legal responsibility for the validity of the statements and comments given above. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Stefan Jahnke INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Kulev, Milen INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
