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bobob
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Posts: 4
Joined: Thu Oct 03, 2013 3:11 am

igmp vs icmp

Tue May 28, 2019 8:48 pm

Can anyone explain why my firewall logs countless ICMP requests on my forward chain in my IPV6 firewall.
I have allowed IGMP,and even protocol 1 (because ICMP is not on the list of protocols in my IPV6 firewall), but ICMP drops still seem to appear in the log.
My drop-all rule at the bottom of my forward chain still complains about ICMP traffic.
Hardware: CRS125-24G1S-2hnD
I have a 6/4 tunnel to HE witch are feeding the ipv6 traffic.

Edit: Running version 6.44.3 of RouterOS
Hardware:
CRS125-24G-1S-2hnD
hAP ac
 
proximus
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Posts: 113
Joined: Tue Oct 04, 2011 1:46 pm

Re: igmp vs icmp

Tue May 28, 2019 9:25 pm

icmpv6 (protocol 58) is an option in the IPv6 firewall configuration. (Protocol 1 is IPv4 ICMP ... not v6)

IPv6 is dependent on ICMPv6 and should not be blocked, unless you really understand which types can be.

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