Welcome to ISAserver.org

Isa as a router: multicast possible?

Users viewing this topic: none

Logged in as: Guest

Printable Version

All Forums >> [ISA Server 2004 Firewall] >> Network Infrastructure >> Isa as a router: multicast possible?

Page: [1]

Message

<< Older Topic Newer Topic >>

Isa as a router: multicast possible? - 29.Oct.2008 6:14:56 AM

tinto

Posts: 247
Joined: 9.Sep.2004
From: Italy
Status: offline

Good day to everyone...

we are using ISA 2004 with satisfaction since some years as a router/firewall for connecting our network with partners' networks.

Now we've got a task: our internal main application uses Multicast (on UDP) for communications among central servers and clients. We have been asked to install a functional client in a partner's network, so the multicast packets should pass by the ISA.

In "debugging" phase we have created 2 access rules allowing "all outbound traffic" from servers to the client and vice-versa. There is Route relationship between the two networks. The client is now partially functional if we configure it to work without Multicast and in TCP mode. But if we try to configure in Multicast/UDP it stops working, as i was expecting.

I'm new to Multicast, i'm studying about it (it is always good to study

) but my question is: is there a way to make ISA deal with Multicast (not only for NLB purposes) or it's not designed for this -as i guess- so it will be impossible to make our client in partner's network work at 100%?

Thank you in advance.

_____________________________

Tinto

Post #: 1

Featured Links*

RE: Isa as a router: multicast possible? - 29.Oct.2008 11:46:18 AM

tinto

Posts: 247
Joined: 9.Sep.2004
From: Italy
Status: offline

in the while i have done some inquiry... theorically the RRAS undergoing ISA is capable of managing IGMP protocol and so on.
I have done some tries enabling the protocol on the 2 networks which need it. In ISA monitoring console the packets with the broadcast address as destination IP begun to appear, denied. I was not able to allow them creating access rules.
I have read this:
http://support.microsoft.com/?scid=kb%3Ben-us%3B938550&x=14&y=17

showing that (on isa2006) the IGMP support shall be enabled with a particualr procedure (the article is about NLB, but maybe this would be neened in my situation too).

Probably this "solution" maybe possibile but seems quite difficult, not very documented/used/supported.

_____________________________

Tinto

(in reply to tinto)

Post #: 2

RE: Isa as a router: multicast possible? - 29.Oct.2008 12:05:32 PM

SteveMoffat

Posts: 1130
Joined: 29.Jun.2001
From: Hamilton, Bermuda
Status: offline

As far as I remember, ISA doesn't "do" multicast.

_____________________________

Thanks
Steve

ISA 2006 Book! - http://tinyurl.com/2gpoo8
TMG Bible - http://tinyurl.com/ykv85hr
www.isaserver.bm

The built in ISA help is likely the most comprehensive help built into an application anywhere. USE it!!! Search it!!! RTFM

(in reply to tinto)