Port Bug Report: postmaster hangs after 'portscan' from a mac

From: Unprivileged user <nobody>
To: pgsql-ports(at)postgresql(dot)org
Subject: Port Bug Report: postmaster hangs after 'portscan' from a mac
Date: 1999-02-02 12:02:14
Message-ID: 199902021202.HAA51272@hub.org
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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Georg Ritter
Your email address : georg(dot)ritter(at)uibk(dot)ac(dot)at

Category : runtime: back-end
Severity : non-critical

Summary: postmaster hangs after 'portscan' from a mac

System Configuration
--------------------
Operating System : linux

PostgreSQL version : 6.4.2

Compiler used : gcc

Hardware:
---------
Redhat 5.2, PII-400, 128MB, 20GB

Versions of other tools:
------------------------

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Problem Description:
--------------------
the postmaster service hangs after I do a portscan (from a
mac with AGNETtools).
AGNET tools says 'unkown service on port 5000' (which is my
postmaster port).
I understand that you perhapse "should not" scan the postmaster
port. But it seems that I could also "crash" someone's
postmaster (what certainly would not be nice).

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Test Case:
----------
use AGNetTool's portscan util (http://www.aggroup.com)
enter the IP of the postmaster running server
et voila.

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Solution:
---------
Perhapse there exists a protokoll for "portscans", bescause
the other services on the server like telnet aso. where liste very
exaktly (version numbers...) and one only need to add a
right reaction to the portscan query.

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