Firewall rules

Additional firewall rules required for proper connection.
Only needed when default firewall config is aggressive (on default firewall settings at least Ubuntu and Fedora do not need this).

Allow multicast:

iptables -A INPUT   -m pkttype --pkt-type multicast -j ACCEPT
iptables -A FORWARD -m pkttype --pkt-type multicast -j ACCEPT
iptables -A OUTPUT  -m pkttype --pkt-type multicast -j ACCEPT

Chromecast devices network scanning:

iptables -I INPUT -p udp --dport 5353 -j ACCEPT

Allow connections to http server (replace port number with the one set in extension settings):

iptables -I INPUT -p tcp --dport 4000 -j ACCEPT

Allow Chromecast UDP data (inbound and outbound):

iptables -I INPUT -p udp -m udp --dport 32768:61000 -j ACCEPT
iptables -I OUTPUT -p udp -m udp --sports 32768:61000 -j ACCEPT

Allow Chromecast TCP data:

iptables -I OUTPUT -p tcp --dports 8008:8009 -j ACCEPT