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Re: [Shorewall-users] shorewall + asterisk
From: Zenny <garbytrash_at_nospam>Date: Tue Feb 28 2012 - 18:03:29 GMT
To: Shorewall Users <shorewall-users@lists.sourceforge.net>
Simon is right. Shorewall maintains its own space without affecting
anything except iptables because it is a wrapper to iptables.
Shorewall.net has the most comprehensive set of documents compared to
that of FreeBSD. Any confusion gets settled by visiting the shorewall
documentation, it is that good!!
On 2/28/12, Simon Hobson <linux@thehobsons.co.uk> wrote:
> Costantino wrote:
>
>>I'm running quite few Asterisk setups where the machine has got only
>>Asterisk and it's part of an environment where another machine runs
>>Shorewall, and I do not have any problem, whether with the VoIP
>>telephones on the local LAN or TSP coming from the outside world.
>>
>>I believe with the configuration I've described the issue has got
>>more to do with what Asterisk does in term of binding when Shorewall
>>is active and the changes Shorewall has induced on the network on
>>activation.
>>
>>In fact even with the both NIC cards present, the issue disappears
>>as soon as Shorewall is disabled.
>
> No, Shorewall will **NOT** affect what Asterisk binds to. Shorewall
> does **NOT** affect the interfaces available to a process, nor the IP
> addresses the process will be able to detect on those interfaces. If
> doing "shorewall clear" allows things to start working, then your
> policies/rules are wrong - because "shorewall clear" only clears the
> iptables rules etc, it cannot magically make a process bind to
> interfaces it wasn't bound to before.
>
> The fact that you could see the packets entering an interface with
> wireshark, but Asterisk didn't report anything, does suggest that
> your policies/rules caused the packets to be dropped.
>
> Try "netstat -anp", that will show you what interfaces/ports are
> being bound to.
>
> --
> Simon Hobson
>
> Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
> author Gladys Hobson. Novels - poetry - short stories - ideal as
> Christmas stocking fillers. Some available as e-books.
>
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