Travis Veazey wrote:
>     > Tom,
>     >
>     > Thanks for your swift reply, and sorry for missing such basic
>     information
>     > initially!
>     >
>     > I'm using Shorewall-perl version 4.2.10 (latest available in Ubuntu's
>     > repository).
>     >
>     >
>     >     Travis Veazey wrote:
>     >
>     >     > Any time we make changes to the firewall configurations and
>     issue a
>     >     > shorewall
>     >     > safe-restart command, all of our phone calls (we are using
>     an Asterisk
>     >     > server behind our
>     >     > firewall) get dropped.
> 
>     The nat table rules are replaced atomically when using Shorewall-perl so
>     I think we need to look elsewhere. What other Shorewall features are you
>     using besides DNAT/SNAT and traffic shaping?
> 
>     -Tom
> 
> 
> We're using DNAT, traffic shaping, accounting, and one change to the modules
> file as described here: http://www.shorewall.net/FAQ.htm#faq77  We have no
> SNAT beyond the standard egress masquerade. We do have multiple IP
> addresses on the external interface - 4, to be precise - but those are
> set up via
> our distribution's built-in networking utilities, so Shorewall shouldn't
> be doing anything to those, right?

Correct.

> We have DNAT rules that forward the same ports on
> different IPs to different internal servers.
> 
> We also have a tunnel interface set up to accept OpenVPN connections, with
> of course the necessary DNAT etc to make that work.
> 
> If there's anything more specific you need to know, let me know. I don't
> want to just flood you with our config files. Thanks for your help!

Please send /var/lib/shorewall/firewall as an attachment to me privately.

Thanks,
-Tom
-- 
Tom Eastep        \ When I die, I want to go like my Grandfather who
Shoreline,         \ died peacefully in his sleep. Not screaming like
Washington, USA     \ all of the passengers in his car
http://shorewall.net \________________________________________________

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