12-01-2008
open ports solaris 8
Hello,
I have a number of Solaris 8 Sun servers that have open ports that I cannot identify. I see some with 1012-1020 (which are reserved ports according to the IANA. Lsof does not identify these. One server has all these on and one server just has 1017.
*.1023 Idle
*.1022 Idle
*.1021 Idle
*.1020 Idle
*.1019 Idle
*.1018 Idle
*.1017 Idle
*.1016 Idle
*.1015 Idle
*.1014 Idle
*.1013 Idle
I also have Disksuite running on 2 of the servers and I see strange ports opened by inetd. Some research indicates that this could be from a Disksuite metatool, but it isn't on all the servers.
# *lsof -i :36724*
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
inetd 247 root 13u IPv4 0x30004c18638 0t0 TCP *:36724 (LISTEN)
# *lsof -i :36725*
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
inetd 247 root 14u IPv4 0x30004c184b8 0t0 TCP *:36725 (LISTEN)
# *lsof -i :50689*
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
inetd 210 root 13u IPv4 0x30001a2be38 0t0 TCP *:50689 (LISTEN)
# *lsof -i :50690*
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
inetd 210 root 14u IPv4 0x30001a2b3b8 0t0 TCP *:50690 (LISTEN)
But then I have another server which isn't running Disksuite that has a similar port open.
# *lsof -i :32769*
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
smcboot 265 root 3u IPv4 0x300001470b0 0t0 TCP *:32769 (LISTEN)
Any ideas please?
Thanks
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LEARN ABOUT CENTOS
listen
LISTEN(7) PostgreSQL 9.2.7 Documentation LISTEN(7)
NAME
LISTEN - listen for a notification
SYNOPSIS
LISTEN channel
DESCRIPTION
LISTEN registers the current session as a listener on the notification channel named channel. If the current session is already registered
as a listener for this notification channel, nothing is done.
Whenever the command NOTIFY channel is invoked, either by this session or another one connected to the same database, all the sessions
currently listening on that notification channel are notified, and each will in turn notify its connected client application.
A session can be unregistered for a given notification channel with the UNLISTEN command. A session's listen registrations are
automatically cleared when the session ends.
The method a client application must use to detect notification events depends on which PostgreSQL application programming interface it
uses. With the libpq library, the application issues LISTEN as an ordinary SQL command, and then must periodically call the function
PQnotifies to find out whether any notification events have been received. Other interfaces such as libpgtcl provide higher-level methods
for handling notify events; indeed, with libpgtcl the application programmer should not even issue LISTEN or UNLISTEN directly. See the
documentation for the interface you are using for more details.
NOTIFY(7) contains a more extensive discussion of the use of LISTEN and NOTIFY.
PARAMETERS
channel
Name of a notification channel (any identifier).
NOTES
LISTEN takes effect at transaction commit. If LISTEN or UNLISTEN is executed within a transaction that later rolls back, the set of
notification channels being listened to is unchanged.
A transaction that has executed LISTEN cannot be prepared for two-phase commit.
EXAMPLES
Configure and execute a listen/notify sequence from psql:
LISTEN virtual;
NOTIFY virtual;
Asynchronous notification "virtual" received from server process with PID 8448.
COMPATIBILITY
There is no LISTEN statement in the SQL standard.
SEE ALSO
NOTIFY(7), UNLISTEN(7)
PostgreSQL 9.2.7 2014-02-17 LISTEN(7)