IGMPproxy: Difference between revisions
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Revision as of 10:56, 26 March 2012
Internet Protocol television (IPTV) is a system through which Internet television services are delivered using the architecture and networking methods of the Internet Protocol Suite over a packet-switched network infrastructure, e.g., the Internet and broadband Internet access networks, instead of being delivered through traditional radio frequency broadcast, satellite signal, and cable television (CATV) formats.
Installing tools
Add alpine http repository to /etc/apk/repositories
echo http://alpine.nethq.org/alpine/v1.9/packages/testing/ >> /etc/apk/repositories
Install igmpproxy
apk add igmpproxy
Install iptables (optional, see troubleshooting)
apk add iptables
Setup igmpproxy
Open /etc/igmpproxy.conf in your favorite editor
nano /etc/igmpproxy.conf
Set upstream interface to your WAN interface. In my case eth0
phyint eth0 upstream ratelimit 0 threshold 1
If you know your ISPs multicast sources you should add them here. If not don't worry we'll come back here later.
altnet 88.222.0.0/16 altnet 10.0.0.0/8
Set downstream interface to your LAN interface. In my case eth1
phyint eth1 downstream ratelimit 0 threshold 1
Disable other unused interfaces
phyint lo disabled
If you haven't added multicast sources yet your igmpproxy.conf should look like this
quickleave phyint eth0 upstream ratelimit 0 threshold 1 phyint eth1 downstream ratelimit 0 threshold 1 phyint lo disabled
Launch igmpproxy in debug mode
igmpproxy -d -v /etc/igmpproxy.conf
You should see output similar to this
RECV Membership query from 10.253.88.1 to 224.0.0.1 RECV Membership query from 10.254.88.1 to 224.0.0.1 RECV V2 member report from 88.222.27.35 to 239.255.255.250
Now we know that ISPs multicast sources are 10.x.x.x (10.0.0.0/8) and 88.222.x.x(88.222.0.0/16). We need to specify them in /etc/igmpproxy.conf right after upstream interface declaration like this
phyint eth0 upstream ratelimit 0 threshold 1 altnet 88.222.0.0/16 altnet 10.0.0.0/8
Your complete igmpproxy.conf should look like this
quickleave phyint eth0 upstream ratelimit 0 threshold 1 altnet 88.222.0.0/16 altnet 10.0.0.0/8 phyint eth1 downstream ratelimit 0 threshold 1 phyint lo disabled
Launch igmpproxy and enjoy IPTV :)
igmpproxy /etc/igmpproxy.conf
Troubleshooting
- Make sure your local subnet is not same as your ISP's multicast source. 192.168.0.0/24 is probably safe bet.
- You might need to add forwarding rules to iptables
iptables -I FORWARD -s 88.222.0.0/16 -d 224.0.0.0/4 -j ACCEPT iptables -I FORWARD -s 10.0.0.0/8 -d 224.0.0.0/4 -j ACCEPT iptables -I INPUT -d 224.0.0.0/4 -j ACCEPT
- If you're using shorewall modify /etc/shorewall/shorewall.conf
MULTICAST=Yes
Add following rules to /etc/shorewall/rules
ACCEPT all fw:224.0.0.0/4 ACCEPT all net:224.0.0.0/4 ACCEPT all loc:224.0.0.0/4