postgresql port closed for remote access
Make sure your firewall is not blocking traffic.
Append the following rules to your iptables (change X.X.X.X
to your server IP address):
# iptables -A INPUT -p tcp -s 0/0 --sport 1024:65535 -d X.X.X.X --dport 5432 -m state --state NEW,ESTABLISHED -j ACCEPT
# iptables -A OUTPUT -p tcp -s X.X.X.X --sport 5432 -d 0/0 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT
If it works, save the iptables and restart it:
# apt-get install iptables-persistent
# /etc/init.d/iptables restart
If you have an external firewall on your network, you should allow the connection there as well.
Security note: opening your PostgreSQL port to public might be a security concern. You should consider limiting the incoming traffic to specific IP address/range by changing the -s 0/0
parameter in the first iptables command to -s X.X.X.X/X
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alexandre9865
Updated on September 18, 2022Comments
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alexandre9865 over 1 year
I'm trying to connect to a PostgreSQL database in an Ubuntu Server, which I have root access, but somehow I can't open port 5432 for remote access, just local. This is what happens when I use "nmap" command on the server (XXX.XXX.X.XX represents server's IP):
nmap -p 5432 localhost PORT STATE SERVICE 5432/tcp open postgresql nmap -p 5432 XXX.XXX.X.XX PORT STATE SERVICE 5432/tcp closed postgresql
I have already edited the files 'pg_hba.conf' and 'postgresql.conf' but it didn't work.
The changes:
pg_hba.conf file:
# IPv4 local connections: host all all all md5 # IPv6 local connections: host all all all md5
postgresql.conf file:
listen_addresses = '*'
And when i try to connect with pgAdmin III, this is what it shows me:
Server doesn't listen
could not connect to server: Connection refused (0x0000274D/10061) Is the server running on host "XXX.XXX.X.XX" and accepting TCP/IP connections on port 5432?
I have tried to open the port using "ufw" command but it didin't work as well.
Can anyone help me?
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natxo asenjo almost 8 yearsdid you restart the postgresql service after modifying those settings?
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