Cannot access other computers on LAN

[Julien dupont]

In most howtos it is instructed to enable port forwarding with 'echo 1 >
/proc/sys/net/ipv4/ip_forward', but they don't say it's not permanent... So
it was gone when I rebooted the machine.

I then disabled the firewall on the VPN_office machine... And it works! If
obviously VPN_out must be highly secured, I guess there is no problem to
disable the firewall on VPN_office? Everything is blocked on our LAN
router.I don't understand why it was on in first place as I did not enable
it.

Thanks you very much Lars for your kind help. Although I browsed a lot of
help pages and howto, I did not find any that was actually telling the
*full* right set of instructions.

Le mar. 15 janv. 2019 à 21:09, Lars Kruse <lists at sumpfralle.de> a écrit :

> Hello Julien,
>
>
> Am Tue, 15 Jan 2019 16:33:26 +0100
> schrieb Julien dupont <marcelvierzon at gmail.com>:
>
> > ip_forward was not enabled, now it is.
>
> a good step forward :)
>
> (you should do this permanently via /etc/sysctl.d/)
>
>
> > 'iptables -L -vn' yields:
> > [..]
>
> OK. The output tells us, that there are firewall rules.
> Now you should take a look at your firewall configuration file. There you
> will
> need to allow traffic from your tinc network into your office network.
> Maybe
> you want to restrict this to certain IPs or ports.
>
> As soon as your firewall rules allow forward traffic to your target, you
> can
> check, whether these packets arrive and maybe where the response packets
> get
> lost.
>
> Cheers,
> Lars
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