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Open Port For Outgoing Connections In IPTables

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Step 1 – Access your server via SSH.

Step 2 – Run the following command to open port. This will open port 8000 for an incoming connection.

/sbin/iptables -I OUTPUT -p tcp –sport $uports –dport 8000 -j ACCEPT
/sbin/iptables -I INPUT -p tcp –sport 8000 –dport $uports -j ACCEPT

Step 3 – edit /etc/rc.local and append the two tables commands at the end of the file, so that the new rules will be applied even after a server reboot.