Use Putty to SSH into the router
/etc/config <shell> cd /etc/config
cp firewall firewall.bak </shell> (so you can restore default firewall rules)
<shell> vi firewall </shell>
Change all “REJECT” to “ACCEPT”
This should make your firewall open and very insecure.
Extra rules MAY be required to full open all ports however.
Save the changes and quit
<shell> /etc/init.d/firewall restart </shell>
so that it reloads firewall with your modified firewall settings