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Database Networking (MOSC)

Accept only tcp4 connection

May 16, 2017 2:32AM edited Jun 1, 2017 5:01AM in Database Networking (MOSC) 10 commentsAnswered

Dear All,

According to security policy requirements oracle 11.2.0.4 RAC database is supposed to listen only tcp4 connections.

If I run netstat -na | grep LIST | grep tcp6 output would be as following:

tcp6	0	0 ::1.58783	.	LISTEN
tcp6	0	0 *.6200	.	LISTEN
tcp6	0	0 ::1.58832	.	LISTEN
tcp6	0	0 *.58068	.	LISTEN
tcp6	0	0 ::1.58792	.	LISTEN
tcp6	0	0 ::1.58805	.	LISTEN
tcp6	0	0 ::1.58814	.	LISTEN
tcp6	0	0 *.49374	.	LISTEN

or if I would specify more in details:

/usr/local/bin/lsof -i | grep IPv6 | grep LISTEN

ons	4449 adminora	6u IPv6 0xe000000738ac7380	0t0 TCP *:6200 (LISTEN)
tnslsnr 18648 adminora 11u IPv6 0xe00000080004b080	0t0 TCP [::1]:58041 (LISTEN)
tnslsnr 18660 adminora 11u IPv6 0xe000000794033380	0t0 TCP [::1]:58053 (LISTEN)
tnslsnr 18679 adminora 11u IPv6 0xe000000740bfe100	0t0 TCP [::1]:58067 (LISTEN)
tnslsnr 18692 adminora 11u IPv6 0xe000000748735080

1

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