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PostgreSQL server listen on other port than 5432

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Hi.

I'm using CentOS 5.3 and PostgreSQL version 8.1.11.

I opened the posgres SQL to accept incoming connections:

<snip start from postgresql.conf>
listen_addresses = '*'
                                       # comma-separated list of addresses;
                                       # defaults to 'localhost', '*' = all
port = 5432
max_connections = 100
<snip end>

It seems that the posgres SQL sometimes listen on other ports than 5432:
# lsof -i -n -P  | grep postg
postmaste 18415 postgres    3u  IPv4  99670       TCP *:17583 (LISTEN)
postmaste 18415 postgres    4u  IPv6 102029       TCP *:5432 (LISTEN)
postmaste 18415 postgres    5u  IPv4 102030       TCP *:5432 (LISTEN)
postmaste 18415 postgres    8u  IPv4 102038       UDP
127.0.0.1:53420->127.0.0.1:53420
postmaste 18421 postgres    3u  IPv4  99670       TCP *:17583 (LISTEN)
postmaste 18423 postgres    3u  IPv4  99670       TCP *:17583 (LISTEN)
postmaste 18423 postgres    8u  IPv4 102038       UDP
127.0.0.1:53420->127.0.0.1:53420
postmaste 18424 postgres    3u  IPv4  99670       TCP *:17583 (LISTEN)
postmaste 18424 postgres    8u  IPv4 102038       UDP
127.0.0.1:53420->127.0.0.1:53420
postmaste 18425 postgres    3u  IPv4  99670       TCP *:17583 (LISTEN)
postmaste 22242 postgres    3u  IPv4  99670       TCP *:17583 (LISTEN)
postmaste 22242 postgres    8u  IPv4 102038       UDP
127.0.0.1:53420->127.0.0.1:53420
postmaste 22242 postgres    9u  IPv4 117409       TCP
127.0.0.1:5432->127.0.0.1:55254 (ESTABLISHED)
postmaste 22270 postgres    3u  IPv4  99670       TCP *:17583 (LISTEN)
postmaste 22270 postgres    8u  IPv4 102038       UDP
127.0.0.1:53420->127.0.0.1:53420
postmaste 22270 postgres    9u  IPv4 117489       TCP
127.0.0.1:5432->127.0.0.1:55256 (ESTABLISHED)


The extra port which is being used (17583) is a port that i need to
other services.
Did anyone see this issue?

Thanks
Dotan

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