Date: Mon, 5 Dec 2005 05:10:52 -0600 From: "Travis H." <solinym@gmail.com> To: Jany <sebosik@demax.sk> Cc: freebsd-pf@freebsd.org Subject: Re: Multicast over NAT Message-ID: <d4f1333a0512050310h16e684abi6b98814fe6f29a96@mail.gmail.com> In-Reply-To: <437A6296.2010105@demax.sk> References: <437A6296.2010105@demax.sk>
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> I found that I need to allow packets with allow-opts (IGMP) - which I > also tried, but it doesn`t help... If i trie to fetch playlist in VLC > via SAP announces, it sends some IGMP packets to $int_if, but they won`t > pass out on $ext_if. Is it possible to config Packet Filter to support > multicast traffic. IGMP is its own protocol, like TCP or UDP. You need to create a rule that allows it. Also you will likely need to create rules for the appropriate multicast addresses; I don't think that referring to an interface will pick up the multicast addresses (it doesn't pick up subnet-directed broadcast or local broadcast). Beyond that, I don't know. I've never fooled with IGMP... if all else fails, consider reading the RFC. -- http://www.lightconsulting.com/~travis/ -><- Knight of the Lambda Calculus "We already have enough fast, insecure systems." -- Schneier & Ferguson GPG fingerprint: 50A1 15C5 A9DE 23B9 ED98 C93E 38E9 204A 94C2 641B
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