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From: Henrik Nordstrom <hno@marasystems.com>
To: Ramin Dousti <ramin@cannon.eng.us.uu.net>
Cc: Harald Welte <laforge@netfilter.org>,
	"John A. Sullivan III" <john.sullivan@nexusmgmt.com>,
	<netfilter@lists.netfilter.org>,
	<netfilter-devel@lists.netfilter.org>
Subject: Re: TTL patch buggy?
Date: Thu, 8 Jan 2004 08:14:14 +0100 (CET)	[thread overview]
Message-ID: <Pine.LNX.4.44.0401080812490.13863-100000@filer.marasystems.com> (raw)
In-Reply-To: <20040107221614.GE20346@cannon.eng.us.uu.net>

On Wed, 7 Jan 2004, Ramin Dousti wrote:

> Absolutely. For a sec I forgot all about the dense mode. Thanks, Henrik.
> However, I still don't see any "danger" about this.

The danger is in if you forget about this and set the TTL on multicast as 
if it was normal traffic. You then allow this multicast traffic to be 
distributed widely outside your network even if the originator had taken 
care to make sure distribution is not allowed far beyond the local 
networks.

Regards
Henrik

WARNING: multiple messages have this Message-ID (diff)
From: Henrik Nordstrom <hno@marasystems.com>
To: Ramin Dousti <ramin@cannon.eng.us.uu.net>
Cc: Harald Welte <laforge@netfilter.org>,
	"John A. Sullivan III" <john.sullivan@nexusmgmt.com>,
	netfilter@lists.netfilter.org,
	netfilter-devel@lists.netfilter.org
Subject: Re: TTL patch buggy?
Date: Thu, 8 Jan 2004 08:14:14 +0100 (CET)	[thread overview]
Message-ID: <Pine.LNX.4.44.0401080812490.13863-100000@filer.marasystems.com> (raw)
In-Reply-To: <20040107221614.GE20346@cannon.eng.us.uu.net>

On Wed, 7 Jan 2004, Ramin Dousti wrote:

> Absolutely. For a sec I forgot all about the dense mode. Thanks, Henrik.
> However, I still don't see any "danger" about this.

The danger is in if you forget about this and set the TTL on multicast as 
if it was normal traffic. You then allow this multicast traffic to be 
distributed widely outside your network even if the originator had taken 
care to make sure distribution is not allowed far beyond the local 
networks.

Regards
Henrik



  reply	other threads:[~2004-01-08  7:14 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-02 15:02 TTL patch buggy? John A. Sullivan III
2004-01-06 18:56 ` Harald Welte
2004-01-06 22:18   ` John A. Sullivan III
2004-01-07 16:16     ` Henrik Nordstrom
2004-01-07 19:04       ` John A. Sullivan III
2004-01-07 19:18         ` Antony Stone
2004-01-07 20:44           ` Ramin Dousti
2004-01-07 19:35         ` Harald Welte
2004-01-07 20:07           ` John A. Sullivan III
2004-01-07 21:38             ` Ramin Dousti
2004-01-08  8:02               ` Cedric Blancher
2004-01-08 16:25                 ` Ramin Dousti
2004-01-08 19:17                   ` Cedric Blancher
2004-01-07 21:19           ` Ramin Dousti
2004-01-07 20:54             ` Henrik Nordstrom
2004-01-07 20:54               ` Henrik Nordstrom
2004-01-07 22:16               ` Ramin Dousti
2004-01-08  7:14                 ` Henrik Nordstrom [this message]
2004-01-08  7:14                   ` Henrik Nordstrom
2004-01-08 20:56                   ` Ramin Dousti
2004-01-07 20:36         ` Ramin Dousti
2004-01-07 19:31       ` Harald Welte
  -- strict thread matches above, loose matches on Subject: below --
2004-01-08 14:32 bmcdowell
2004-01-02 13:13 John A. Sullivan III
2004-01-02 14:27 ` Antony Stone

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