Multicast supported?

How can I see if my local router supports multicasting and if I can
send/receive multicast packets? When I try ping 224.0.0.1 it says
operation not permitted but when I try it from another computer ssh-ed
that is in subnet of LAN it works and returns pinged computers of that
subnet of LAN. When I try to send multicast packet using Java it says:
java.io.IOException: Operation not permitted
at java.net.PlainDatagramSocketImpl.send(Native Method)
at java.net.DatagramSocket.send(DatagramSocket.java:6 12)
I would like to have multicast supported at home in LAN and not to go
everytime to computer lab to test the project I'm working on.
-- mario

(E-Mail Removed) wrote:
> How can I see if my local router supports multicasting and if I can
> send/receive multicast packets? When I try ping 224.0.0.1 it says
> operation not permitted but when I try it from another computer ssh-ed
> that is in subnet of LAN it works and returns pinged computers of that
> subnet of LAN. When I try to send multicast packet using Java it says:
> java.io.IOException: Operation not permitted
> at java.net.PlainDatagramSocketImpl.send(Native Method)
> at java.net.DatagramSocket.send(DatagramSocket.java:6 12)
> I would like to have multicast supported at home in LAN and not to go
> everytime to computer lab to test the project I'm working on.
> -- mario

Why do you need multicast packets to go through your router at home?
Are you running more than one subnet?