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| author | Guilhem Moulin <guilhem@fripost.org> | 2020-11-08 15:10:05 +0100 |
|---|---|---|
| committer | Guilhem Moulin <guilhem@fripost.org> | 2020-11-15 18:33:37 +0100 |
| commit | ef1764c0ec38f987087f8dc9727aa12c441720a0 (patch) | |
| tree | c290566dbd130efce7c645e5f70e5c1464c8be9f | |
| parent | 4db299d6e2a5953c59906d4f1cb6841da34beb7c (diff) | |
Firewall: ICMPv6: accept link-local multicast receiver notification messages.
| -rwxr-xr-x | roles/common/templates/etc/nftables.conf.j2 | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/roles/common/templates/etc/nftables.conf.j2 b/roles/common/templates/etc/nftables.conf.j2 index 808383c..cc79671 100755 --- a/roles/common/templates/etc/nftables.conf.j2 +++ b/roles/common/templates/etc/nftables.conf.j2 @@ -64,7 +64,10 @@ table netdev filter { # accept neighbour discovery for autoconfiguration, RFC 4890 sec. 4.4.1 ip6 hoplimit 255 icmpv6 type { 133,134,135,136,141,142 } counter accept - # reject all remaining ICMP/ICMPv6 traffic + # accept link-local multicast receiver notification messages + ip6 saddr fe80::/10 ip6 daddr ff02::/16 ip6 hoplimit 1 icmpv6 type { 130,131,132,143 } counter accept + + # drop all remaining ICMP/ICMPv6 traffic meta l4proto { icmp, icmpv6 } drop # bogon filter (cf. RFC 6890 for non-global ip addresses) |