Compare Pastes
Differences between the pastes
#241982 (15.12.2021 18:26)
and
#281422 (09.11.2025 02:16).
| 1 | # | |
| 2 | # rules.before | |
| 3 | # | |
| 4 | # Rules that should be run before the ufw command line added rules. Custom | |
| 5 | # rules should be added to one of these chains: | |
| 6 | # ufw6-before-input | |
| 7 | # ufw6-before-output | |
| 8 | # ufw6-before-forward | |
| 9 | # | |
| 10 | ||
| 11 | # Don't delete these required lines, otherwise there will be errors | |
| 12 | *filter | |
| 13 | :ufw6-before-input - [0:0] | |
| 14 | :ufw6-before-output - [0:0] | |
| 15 | :ufw6-before-forward - [0:0] | |
| 16 | # End required lines | |
| 17 | ||
| 18 | ||
| 19 | # allow all on loopback | |
| 20 | -A ufw6-before-input -i lo -j ACCEPT | |
| 21 | -A ufw6-before-output -o lo -j ACCEPT | |
| 22 | ||
| 23 | # drop packets with RH0 headers | |
| 24 | -A ufw6-before-input -m rt --rt-type 0 -j DROP | |
| 25 | -A ufw6-before-forward -m rt --rt-type 0 -j DROP | |
| 26 | -A ufw6-before-output -m rt --rt-type 0 -j DROP | |
| 27 | ||
| 28 | # quickly process packets for which we already have a connection | |
| 29 | -A ufw6-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
| 30 | -A ufw6-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
| 31 | -A ufw6-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
| 32 | ||
| 33 | # multicast ping replies are part of the ok icmp codes for INPUT (rfc4890, | |
| 34 | # 4.4.1 and 4.4.2), but don't have an associated connection and are otherwise | |
| 35 | # be marked INVALID, so allow here instead. | |
| 36 | -A ufw6-before-input -p icmpv6 --icmpv6-type echo-reply -j ACCEPT | |
| 37 | ||
| 38 | # drop INVALID packets (logs these in loglevel medium and higher) | |
| 39 | -A ufw6-before-input -m conntrack --ctstate INVALID -j ufw6-logging-deny | |
| 40 | -A ufw6-before-input -m conntrack --ctstate INVALID -j DROP | |
| 41 | ||
| 42 | # ok icmp codes for INPUT (rfc4890, 4.4.1 and 4.4.2) | |
| 43 | -A ufw6-before-input -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT | |
| 44 | -A ufw6-before-input -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT | |
| 45 | # codes 0 and 1 | |
| 46 | -A ufw6-before-input -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT | |
| 47 | # codes 0-2 (echo-reply needs to be before INVALID, see above) | |
| 48 | -A ufw6-before-input -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT | |
| 49 | -A ufw6-before-input -p icmpv6 --icmpv6-type echo-request -j ACCEPT | |
| 50 | -A ufw6-before-input -p icmpv6 --icmpv6-type router-solicitation -m hl --hl-eq 255 -j ACCEPT | |
| 51 | -A ufw6-before-input -p icmpv6 --icmpv6-type router-advertisement -m hl --hl-eq 255 -j ACCEPT | |
| 52 | -A ufw6-before-input -p icmpv6 --icmpv6-type neighbor-solicitation -m hl --hl-eq 255 -j ACCEPT | |
| 53 | -A ufw6-before-input -p icmpv6 --icmpv6-type neighbor-advertisement -m hl --hl-eq 255 -j ACCEPT | |
| 54 | # IND solicitation | |
| 55 | -A ufw6-before-input -p icmpv6 --icmpv6-type 141 -m hl --hl-eq 255 -j ACCEPT | |
| 56 | # IND advertisement | |
| 57 | -A ufw6-before-input -p icmpv6 --icmpv6-type 142 -m hl --hl-eq 255 -j ACCEPT | |
| 58 | # MLD query | |
| 59 | -A ufw6-before-input -p icmpv6 --icmpv6-type 130 -s fe80::/10 -j ACCEPT | |
| 60 | # MLD report | |
| 61 | -A ufw6-before-input -p icmpv6 --icmpv6-type 131 -s fe80::/10 -j ACCEPT | |
| 62 | # MLD done | |
| 63 | -A ufw6-before-input -p icmpv6 --icmpv6-type 132 -s fe80::/10 -j ACCEPT | |
| 64 | # MLD report v2 | |
| 65 | -A ufw6-before-input -p icmpv6 --icmpv6-type 143 -s fe80::/10 -j ACCEPT | |
| 66 | # SEND certificate path solicitation | |
| 67 | -A ufw6-before-input -p icmpv6 --icmpv6-type 148 -m hl --hl-eq 255 -j ACCEPT | |
| 68 | # SEND certificate path advertisement | |
| 69 | -A ufw6-before-input -p icmpv6 --icmpv6-type 149 -m hl --hl-eq 255 -j ACCEPT | |
| 70 | # MR advertisement | |
| 71 | -A ufw6-before-input -p icmpv6 --icmpv6-type 151 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT | |
| 72 | # MR solicitation | |
| 73 | -A ufw6-before-input -p icmpv6 --icmpv6-type 152 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT | |
| 74 | # MR termination | |
| 75 | -A ufw6-before-input -p icmpv6 --icmpv6-type 153 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT | |
| 76 | ||
| 77 | # ok icmp codes for OUTPUT (rfc4890, 4.4.1 and 4.4.2) | |
| 78 | -A ufw6-before-output -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT | |
| 79 | -A ufw6-before-output -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT | |
| 80 | # codes 0 and 1 | |
| 81 | -A ufw6-before-output -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT | |
| 82 | # codes 0-2 | |
| 83 | -A ufw6-before-output -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT | |
| 84 | -A ufw6-before-output -p icmpv6 --icmpv6-type echo-request -j ACCEPT | |
| 85 | -A ufw6-before-output -p icmpv6 --icmpv6-type echo-reply -j ACCEPT | |
| 86 | -A ufw6-before-output -p icmpv6 --icmpv6-type router-solicitation -m hl --hl-eq 255 -j ACCEPT | |
| 87 | -A ufw6-before-output -p icmpv6 --icmpv6-type neighbor-advertisement -m hl --hl-eq 255 -j ACCEPT | |
| 88 | -A ufw6-before-output -p icmpv6 --icmpv6-type neighbor-solicitation -m hl --hl-eq 255 -j ACCEPT | |
| 89 | -A ufw6-before-output -p icmpv6 --icmpv6-type router-advertisement -m hl --hl-eq 255 -j ACCEPT | |
| 90 | # IND solicitation | |
| 91 | -A ufw6-before-output -p icmpv6 --icmpv6-type 141 -m hl --hl-eq 255 -j ACCEPT | |
| 92 | # IND advertisement | |
| 93 | -A ufw6-before-output -p icmpv6 --icmpv6-type 142 -m hl --hl-eq 255 -j ACCEPT | |
| 94 | # MLD query | |
| 95 | -A ufw6-before-output -p icmpv6 --icmpv6-type 130 -s fe80::/10 -j ACCEPT | |
| 96 | # MLD report | |
| 97 | -A ufw6-before-output -p icmpv6 --icmpv6-type 131 -s fe80::/10 -j ACCEPT | |
| 98 | # MLD done | |
| 99 | -A ufw6-before-output -p icmpv6 --icmpv6-type 132 -s fe80::/10 -j ACCEPT | |
| 100 | # MLD report v2 | |
| 101 | -A ufw6-before-output -p icmpv6 --icmpv6-type 143 -s fe80::/10 -j ACCEPT | |
| 102 | # SEND certificate path solicitation | |
| 103 | -A ufw6-before-output -p icmpv6 --icmpv6-type 148 -m hl --hl-eq 255 -j ACCEPT | |
| 104 | # SEND certificate path advertisement | |
| 105 | -A ufw6-before-output -p icmpv6 --icmpv6-type 149 -m hl --hl-eq 255 -j ACCEPT | |
| 106 | # MR advertisement | |
| 107 | -A ufw6-before-output -p icmpv6 --icmpv6-type 151 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT | |
| 108 | # MR solicitation | |
| 109 | -A ufw6-before-output -p icmpv6 --icmpv6-type 152 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT | |
| 110 | # MR termination | |
| 111 | -A ufw6-before-output -p icmpv6 --icmpv6-type 153 -s fe80::/10 -m hl --hl-eq 1 -j ACCEPT | |
| 112 | ||
| 113 | # ok icmp codes for FORWARD (rfc4890, 4.3.1) | |
| 114 | -A ufw6-before-forward -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT | |
| 115 | -A ufw6-before-forward -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT | |
| 116 | # codes 0 and 1 | |
| 117 | -A ufw6-before-forward -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT | |
| 118 | # codes 0-2 | |
| 119 | -A ufw6-before-forward -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT | |
| 120 | -A ufw6-before-forward -p icmpv6 --icmpv6-type echo-request -j ACCEPT | |
| 121 | -A ufw6-before-forward -p icmpv6 --icmpv6-type echo-reply -j ACCEPT | |
| 122 | # ok icmp codes for FORWARD (rfc4890, 4.3.2) | |
| 123 | # Home Agent Address Discovery Reques | |
| 124 | -A ufw6-before-input -p icmpv6 --icmpv6-type 144 -j ACCEPT | |
| 125 | # Home Agent Address Discovery Reply | |
| 126 | -A ufw6-before-input -p icmpv6 --icmpv6-type 145 -j ACCEPT | |
| 127 | # Mobile Prefix Solicitation | |
| 128 | -A ufw6-before-input -p icmpv6 --icmpv6-type 146 -j ACCEPT | |
| 129 | # Mobile Prefix Advertisement | |
| 130 | -A ufw6-before-input -p icmpv6 --icmpv6-type 147 -j ACCEPT | |
| 131 | ||
| 132 | # allow dhcp client to work | |
| 133 | -A ufw6-before-input -p udp -s fe80::/10 --sport 547 -d fe80::/10 --dport 546 -j ACCEPT | |
| 134 | ||
| 135 | # allow MULTICAST mDNS for service discovery | |
| 136 | -A ufw6-before-input -p udp -d ff02::fb --dport 5353 -j ACCEPT | |
| 137 | ||
| 138 | # allow MULTICAST UPnP for service discovery | |
| 139 | -A ufw6-before-input -p udp -d ff02::f --dport 1900 -j ACCEPT | |
| 140 | ||
| 141 | # don't delete the 'COMMIT' line or these rules won't be processed |