# # rules.before # # Rules that should be run before the ufw command line added rules. Custom # rules should be added to one of these chains: # ufw6-before-input # ufw6-before-output # ufw6-before-forward # # Don't delete these required lines, otherwise there will be errors *filter :ufw6-before-input - [0:0] :ufw6-before-output - [0:0] :ufw6-before-forward - [0:0] # End required lines # allow all on loopback -A ufw6-before-input -i lo -j ACCEPT -A ufw6-before-output -o lo -j ACCEPT # drop packets with RH0 headers -A ufw6-before-input -m rt --rt-type 0 -j DROP -A ufw6-before-forward -m rt --rt-type 0 -j DROP -A ufw6-before-output -m rt --rt-type 0 -j DROP # quickly process packets for which we already have a connection -A ufw6-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A ufw6-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A ufw6-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT # multicast ping replies are part of the ok icmp codes for INPUT (rfc4890, # 4.4.1 and 4.4.2), but don't have an associated connection and are otherwise # be marked INVALID, so allow here instead. -A ufw6-before-input -p icmpv6 --icmpv6-type echo-reply -j ACCEPT # drop INVALID packets (logs these in loglevel medium and higher) -A ufw6-before-input -m conntrack --ctstate INVALID -j ufw6-logging-deny -A ufw6-before-input -m conntrack --ctstate INVALID -j DROP # ok icmp codes for INPUT (rfc4890, 4.4.1 and 4.4.2) -A ufw6-before-input -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT -A ufw6-before-input -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT # codes 0 and 1 -A ufw6-before-input -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT # codes 0-2 (echo-reply needs to be before INVALID, see above) -A ufw6-before-input -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT -A ufw6-before-input -p icmpv6 --icmpv6-type echo-request -j ACCEPT -A ufw6-before-input -p icmpv6 --icmpv6-type router-solicitation -m hl --hl-eq 255 -j ACCEPT -A ufw6-before-input -p icmpv6 --icmpv6-type router-advertisement -m hl --hl-eq 255 -j ACCEPT -A ufw6-before-input -p icmpv6 --icmpv6-type neighbor-solicitation -m hl --hl-eq 255 -j ACCEPT -A ufw6-before-input -p icmpv6 --icmpv6-type neighbor-advertisement -m hl --hl-eq 255 -j ACCEPT # IND solicitation -A ufw6-before-input -p icmpv6 --icmpv6-type 141 -m hl --hl-eq 255 -j ACCEPT # IND advertisement -A ufw6-before-input -p icmpv6 --icmpv6-type 142 -m hl --hl-eq 255 -j ACCEPT # MLD query -A ufw6-before-input -p icmpv6 --icmpv6-type 130 -s fe80::/10 -j ACCEPT # MLD report -A ufw6-before-input -p icmpv6 --icmpv6-type 131 -s fe80::/10 -j ACCEPT # MLD done -A ufw6-before-input -p icmpv6 --icmpv6-type 132 -s fe80::/10 -j ACCEPT # MLD report v2 -A ufw6-before-input -p icmpv6 --icmpv6-type 143 -s fe80::/10 -j ACCEPT # SEND certificate path solicitation -A ufw6-before-input -p icmpv6 --icmpv6-type 148 -m hl --hl-eq 255 -j ACCEPT # SEND certificate path advertisement -A ufw6-before-input -p icmpv6 --icmpv6-type 149 -m hl --hl-eq 255 -j ACCEPT # MR advertisement -A ufw6-before-input -p icmpv6 --icmpv6-type 151 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT # MR solicitation -A ufw6-before-input -p icmpv6 --icmpv6-type 152 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT # MR termination -A ufw6-before-input -p icmpv6 --icmpv6-type 153 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT # ok icmp codes for OUTPUT (rfc4890, 4.4.1 and 4.4.2) -A ufw6-before-output -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT -A ufw6-before-output -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT # codes 0 and 1 -A ufw6-before-output -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT # codes 0-2 -A ufw6-before-output -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT -A ufw6-before-output -p icmpv6 --icmpv6-type echo-request -j ACCEPT -A ufw6-before-output -p icmpv6 --icmpv6-type echo-reply -j ACCEPT -A ufw6-before-output -p icmpv6 --icmpv6-type router-solicitation -m hl --hl-eq 255 -j ACCEPT -A ufw6-before-output -p icmpv6 --icmpv6-type neighbor-advertisement -m hl --hl-eq 255 -j ACCEPT -A ufw6-before-output -p icmpv6 --icmpv6-type neighbor-solicitation -m hl --hl-eq 255 -j ACCEPT -A ufw6-before-output -p icmpv6 --icmpv6-type router-advertisement -m hl --hl-eq 255 -j ACCEPT # IND solicitation -A ufw6-before-output -p icmpv6 --icmpv6-type 141 -m hl --hl-eq 255 -j ACCEPT # IND advertisement -A ufw6-before-output -p icmpv6 --icmpv6-type 142 -m hl --hl-eq 255 -j ACCEPT # MLD query -A ufw6-before-output -p icmpv6 --icmpv6-type 130 -s fe80::/10 -j ACCEPT # MLD report -A ufw6-before-output -p icmpv6 --icmpv6-type 131 -s fe80::/10 -j ACCEPT # MLD done -A ufw6-before-output -p icmpv6 --icmpv6-type 132 -s fe80::/10 -j ACCEPT # MLD report v2 -A ufw6-before-output -p icmpv6 --icmpv6-type 143 -s fe80::/10 -j ACCEPT # SEND certificate path solicitation -A ufw6-before-output -p icmpv6 --icmpv6-type 148 -m hl --hl-eq 255 -j ACCEPT # SEND certificate path advertisement -A ufw6-before-output -p icmpv6 --icmpv6-type 149 -m hl --hl-eq 255 -j ACCEPT # MR advertisement -A ufw6-before-output -p icmpv6 --icmpv6-type 151 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT # MR solicitation -A ufw6-before-output -p icmpv6 --icmpv6-type 152 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT # MR termination -A ufw6-before-output -p icmpv6 --icmpv6-type 153 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT # ok icmp codes for FORWARD (rfc4890, 4.3.1) -A ufw6-before-forward -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT -A ufw6-before-forward -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT # codes 0 and 1 -A ufw6-before-forward -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT # codes 0-2 -A ufw6-before-forward -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT -A ufw6-before-forward -p icmpv6 --icmpv6-type echo-request -j ACCEPT -A ufw6-before-forward -p icmpv6 --icmpv6-type echo-reply -j ACCEPT # ok icmp codes for FORWARD (rfc4890, 4.3.2) # Home Agent Address Discovery Reques -A ufw6-before-input -p icmpv6 --icmpv6-type 144 -j ACCEPT # Home Agent Address Discovery Reply -A ufw6-before-input -p icmpv6 --icmpv6-type 145 -j ACCEPT # Mobile Prefix Solicitation -A ufw6-before-input -p icmpv6 --icmpv6-type 146 -j ACCEPT # Mobile Prefix Advertisement -A ufw6-before-input -p icmpv6 --icmpv6-type 147 -j ACCEPT # allow dhcp client to work -A ufw6-before-input -p udp -s fe80::/10 --sport 547 -d fe80::/10 --dport 546 -j ACCEPT # allow MULTICAST mDNS for service discovery -A ufw6-before-input -p udp -d ff02::fb --dport 5353 -j ACCEPT # allow MULTICAST UPnP for service discovery -A ufw6-before-input -p udp -d ff02::f --dport 1900 -j ACCEPT # don't delete the 'COMMIT' line or these rules won't be processed COMMIT