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Can't keep listener going on CentOS

Posted: Fri May 28, 2010 5:40 am
by FTP
CentOS will open firwall "iptables" by default, so you need to add some rules for your listener ports, do it like this:

Code: Select all

su -
/sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT
/sbin/iptables -I INPUT -p tcp --dport 21 -j ACCEPT
/sbin/iptables -I INPUT -p tcp --dport 5466 -j ACCEPT
/etc/rc.d/init.d/iptables save
/etc/init.d/iptables restart

And for CentOS 8.0+, you can use the below commands:

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su -
firewall-cmd --zone=public --permanent --add-port 80/tcp
firewall-cmd --zone=public --permanent --add-port 21/tcp
firewall-cmd --zone=public --permanent --add-port 5466/tcp
firewall-cmd --reload