Open port with iptables

 
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Operating Systems Linux Red Hat Open port with iptables
# 1  
Old 05-18-2012
Open port with iptables

Hi,

What iptables command do I need to run in order to open up the following port for incomming traffic on the following server:

Code:
# telnet 127.0.0.1 1521
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused

R,
D.
# 2  
Old 05-18-2012
Add the following line in /etc/sysconfig/iptables before the FORWARD chain:
Code:
-A INPUT -m state --state NEW -m tcp -p tcp --dport 1521 -j ACCEPT

And restart the iptables service:
Code:
service iptables restart

Check if the port is open now:
Code:
iptables -L

# 3  
Old 05-24-2012
Kindly run the following command sequences on root terminal.

iptables -I INPUT -m state --state NEW -p tcp --dport 1521 -j ACCEPT
iptables -I INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
/etc/init.d/iptables save
This User Gave Thanks to nicks For This Post:
# 4  
Old 05-24-2012
iptables -A INPUT -p tcp -m tcp --dport 1521 -j ACCEPT
iptables save
service iptables restart
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