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firewall: Allow IGMP and MLD input on WAN

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The WAN port should at least respond to IGMP and MLD queries as
otherwise a snooping bridge/switch might drop traffic.

RFC4890 recommends to leave IGMP and MLD unfiltered as they are always
link-scoped anyways.

Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>

SVN-Revision: 45613
This commit is contained in:
Steven Barth 2015-05-05 13:22:41 +00:00
parent 336fc7a702
commit d534883a52
1 changed files with 19 additions and 0 deletions
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19
package/network/config/firewall/files/firewall.config
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@ -46,6 +46,13 @@ config rule
option family ipv4
option target ACCEPT
config rule
option name Allow-IGMP
option src wan
option proto igmp
option family ipv4
option target ACCEPT
# Allow DHCPv6 replies
# see https://dev.openwrt.org/ticket/10381
config rule
@ -59,6 +66,18 @@ config rule
option family ipv6
option target ACCEPT
config rule
option name Allow-MLD
option src wan
option proto icmp
option src_ip fe80::/10
list icmp_type '130/0'
list icmp_type '131/0'
list icmp_type '132/0'
list icmp_type '143/0'
option family ipv6
option target ACCEPT
# Allow essential incoming IPv6 ICMP traffic
config rule
option name Allow-ICMPv6-Input