| oracle listener [message #641043] |
Mon, 10 August 2015 02:43  |
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maereg
Messages: 1
Registered: August 2015
Location: addis ababa Ethiopia
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Junior Member |
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Dear all
why we need to change oracle default listener name and port?? what is the risk if it not changed?
thank you for your support!
[EDITED by LF: fixed topic title typo; was "listiner"]
[Updated on: Mon, 10 August 2015 06:59] by Moderator Report message to a moderator |
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| Re: oracle listiner [message #641062 is a reply to message #641043] |
Mon, 10 August 2015 06:36  |
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EdStevens
Messages: 1376
Registered: September 2013
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Senior Member |
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maereg wrote on Mon, 10 August 2015 02:43Dear all
why we need to change oracle default listener name and port?? what is the risk if it not changed?
thank you for your support!
Who says you need to change them?
Yes, the name and port are well known. As is the port for a host of other services, like ftp, sftp, ssh, smtp, etc, etc.
See http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml
See https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
If you or someone in your organization thinks this is a security issue, or that security is increased by moving a well-known service to a non-standard port, you/they are woefully misinformed. Ask yourself/them if they are prepared to move their smtp services or thier dns services to a non-standard port.
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