[PATCH v2] fff-gateway: Add firewall rules to ensure nothing is forwarded onto WAN

[robert]

Hi Fabian,

kann man machen. Sollte bei richtigem Routing zwar nicht nötig sein,
aber sicher ist sicher.

Reviewed-by: Robert Langhammer <rlanghammer at web.de>

Am 10.09.19 um 22:09 schrieb Fabian Bläse:
> Signed-off-by: Fabian Bläse <fabian at blaese.de>
> ---
> Changes in v2:
> - Fix redundant --reject-with parameter
> ---
>  .../fff/fff-gateway/files/usr/lib/firewall.d/10-no-forward-wan | 3 +++
>  1 file changed, 3 insertions(+)
>  create mode 100644 src/packages/fff/fff-gateway/files/usr/lib/firewall.d/10-no-forward-wan
>
> diff --git a/src/packages/fff/fff-gateway/files/usr/lib/firewall.d/10-no-forward-wan b/src/packages/fff/fff-gateway/files/usr/lib/firewall.d/10-no-forward-wan
> new file mode 100644
> index 0000000..f989d6b
> --- /dev/null
> +++ b/src/packages/fff/fff-gateway/files/usr/lib/firewall.d/10-no-forward-wan
> @@ -0,0 +1,3 @@
> +# Ensure nothing is forwarded onto WAN interface
> +iptables -A FORWARD -o $IF_WAN -j REJECT --reject-with icmp-net-unreachable
> +ip6tables -A FORWARD -o $IF_WAN -j REJECT --reject-with no-route