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Date:      Tue, 24 Oct 2017 23:20:40 +1100 (EST)
From:      Ian Smith <smithi@nimnet.asn.au>
To:        Trond.Endrestol@fagskolen.gjovik.no
Cc:        Efren Bravo <efrenba@gmail.com>, freebsd-questions@freebsd.org
Subject:   Re: Routing problem
Message-ID:  <20171024230440.N32145@sola.nimnet.asn.au>
In-Reply-To: <mailman.87.1508846402.5945.freebsd-questions@freebsd.org>
References:  <mailman.87.1508846402.5945.freebsd-questions@freebsd.org>

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In freebsd-questions Digest, Vol 699, Issue 2, Message: 8
On Mon, 23 Oct 2017 22:30:26 +0200 (CEST)
Trond Endrest?l <Trond.Endrestol@fagskolen.gjovik.no> wrote:
 > On Mon, 23 Oct 2017 15:19-0400, Efren Bravo wrote:
 > 
 > > Hi there,
 > > 
 > > I installed a FreeBSD 10.1 box and upgraded to 10.4. I tried to configure
 > > this box as a FW but I can't get ping works from inside LAN to outside
 > > world, neither any tcp/upd connection. Basic configs:
 > > 
 > > router ip: 190.92.124.89
 > > 
 > > kernel (recompiled & installed OK):
 > > a lot of innecesary things disabled before recompilation
 > > ---
 > > options IPFILTER
 > > options IPFILTER_LOG
 > > options IPFILTER_LOOKUP
 > > options IPFILTER_DEFAULT_BLOCK
 > > 
 > > /etc/rc.conf
 > > ---
 > 
 > > #WAN
 > > ifconfig_re0="inet 190.92.124.90 netmask 255.255.255.248"
 > 
 > Public IPv4 address space.
 > 
 > > # LAN
 > > ifconfig_em0="inet 10.170.0.1 netmask 25.255.255.128"
 > 
 > Private IPv4 address space.
 > 
 > Do you plan on setting up NAT44 on this box? You should if you want 
 > this setup to work as expected.

Indeed, some variety of NAT daemon.  But also ..

 > > defaultrouter="190.92.124.89"
 > > gateway_eanble="YES"

.. that needs to be 'gateway_enable'.

 % grep -wA7 gateway_enable /etc/rc.d/routing

After fixing /etc/rc.conf one can just run:
 # service routing restart

or even (until next boot or routing restart) just:
 # sysctl net.inet.ip.forwarding=1

cheers, Ian



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