03-21-2014
Quote:
Originally Posted by
randomxs
Why would someone continually try to access the https port for months on end 100s of times an hour when clearly they must see they are being denied access to the server?
Iptables is not perfect and even when you use DROP rather than REJECT a port scanner can tell that DROP is in use by doing a SYN scan. If a server is on the port the SYN will get an ACK, otherwise it gets a RST. So the bad guy knows that he is getting nailed by a DROP rule and there is a live server being protected by the DROP rule. So he sets up an infinite loop trying to connect.
He hopes you will someday have a problem, wonder if iptables is causing it, and try dropping iptables just for a few seconds. Or maybe you will change your configuration and do a quick "service iptables restart". Most iptable configs allow ESTABLISHED connections to persist so once he connects... he is in.
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LEARN ABOUT CENTOS
drop_tablespace
DROP
TABLESPACE(7) PostgreSQL 9.2.7 Documentation DROP TABLESPACE(7)
NAME
DROP_TABLESPACE - remove a tablespace
SYNOPSIS
DROP TABLESPACE [ IF EXISTS ] name
DESCRIPTION
DROP TABLESPACE removes a tablespace from the system.
A tablespace can only be dropped by its owner or a superuser. The tablespace must be empty of all database objects before it can be
dropped. It is possible that objects in other databases might still reside in the tablespace even if no objects in the current database are
using the tablespace. Also, if the tablespace is listed in the temp_tablespaces setting of any active session, the DROP might fail due to
temporary files residing in the tablespace.
PARAMETERS
IF EXISTS
Do not throw an error if the tablespace does not exist. A notice is issued in this case.
name
The name of a tablespace.
NOTES
DROP TABLESPACE cannot be executed inside a transaction block.
EXAMPLES
To remove tablespace mystuff from the system:
DROP TABLESPACE mystuff;
COMPATIBILITY
DROP TABLESPACE is a PostgreSQL extension.
SEE ALSO
CREATE TABLESPACE (CREATE_TABLESPACE(7)), ALTER TABLESPACE (ALTER_TABLESPACE(7))
PostgreSQL 9.2.7 2014-02-17 DROP TABLESPACE(7)