IPv6/Firewall: Unterschied zwischen den Versionen

Aktuelle Version vom 22. Juli 2025, 14:11 Uhr

IPv6/Firewall

Beschreibung

Protokolle
Netze

ICMP

Internet Control Message Protocol (ICMP) ist Kernbestandteil der Internetprotokollfamilie

Austausch von Fehlermeldungen und Informationsnachrichten

IPv4

Bei IPv4 ist es gängige Praxis, ICMP an der Firewall zu blockieren

Bedeutung von ICMPv6

Für wichtige Mechanismen unerlässlich

z.B.pMTUd

Eine undifferenzierte Filterung von ICMPv6 kann Erreichbarkeitsprobleme mit sich bringen

Daher sollte bei IPv6 keine generelle Sperrung von ICMPv6 erfolgen

Folgende ICMPv6-Typen sollten zumindest teilweise zugelassen werden (vgl. auch RFC/4890)

Nicht genannte Typen sollten gesperrt werden

Die Bezeichnungen „vom Internet“ und „zum Internet“ beziehen sich jeweils auf das System, das die Verbindung aufbaut oder deren Endpunkt darstellt (in der Regel ein ALG)

IPv6-ICMP Nachricht (Typ)	Zwischen internen Netzen	Vom Internet	Zum Internet
Destination unreachable (1)	✓	✓	✓
Packet too big (2)	✓	✓	✓
Time exceeded (3)	✓	✓	✓
Parameter Problem (4)	✓	✓	✓
Echo-Request (128)	✓ ¹	✗	✓ ¹
Echo-Antwort (129)	✓ ²	✓ ²	✗
Multicast (130-132, 143, 151-153)	✓ ³	✓ ³	✓ ³
Router (133, 134)	✓ ³	✗	✗
Neighbor (135,136)	✓ ³	✓ ³	✓ ³
Redirect (137)	✓ ^3/4	✗	✗
ICMP-Information (139)	✓ ¹	✗	✗
ICMP-Information (140)	✓ ²	✗	✗
Reverse-Neighbor (141)	✓ ¹	✗	✗
Reverse-Neighbor (142)	✓ ²	✗	✗

Legende

1 = von der Management-Station aus
2 = zur Management-Station hin
3 = ohne Forwarding
4 = ausgehend vom Router

Quelle

https://www.allianz-fuer-cybersicherheit.de/SharedDocs/Downloads/Webs/ACS/DE/BSI-CS/BSI-CS_057.pdf?__blob=publicationFile&v=1

OPNsense

iptables

Regeln Client

* mangle
 : PREROUTING ACCEPT [ : ]
 : INPUT ACCEPT [ : ]
 : FORWARD ACCEPT [ : ]
 : OUTPUT ACCEPT [ : ]
 : POSTROUTING ACCEPT [ : ]
 COMMIT
 #
 * filter
 : INPUT DROP [ : ]
 : FORWARD DROP [ : ]
 : OUTPUT ACCEPT [ : ]
 : ndp-slaac - [ : ]
 : trashlog - [ : ]
 -A INPUT -i lo -j ACCEPT
 -A INPUT -m conntrack -- ctstate INVALID -j trashlog
 -A INPUT -m conntrack -- ctstate RELATED , ESTABLISHED -j ACCEPT
 -A INPUT -p ipv6-icmp -j ndp-slaac
 -A INPUT -s fe80::/1 -d fe80::/10 -p ipv6-icmp -m icmp6 --icmpv6-type 128 -m conntrack -- ctstate NEW -j ACCEPT
 -A INPUT -s fe80::/1 -p tcp -m tcp -- dport 22 -m conntrack -- ctstate NEW -j ACCEPT
 -A OUTPUT -o lo -j ACCEPT
 -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 133 -m hl --hl-eq 255 -j ACCEPT
 -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 134 -m hl --hl-eq 255 -j ACCEPT
 -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 135 -m hl --hl-eq 255 -j ACCEPT
 -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 136 -m hl --hl-eq 255 -j ACCEPT
 -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 137 -m hl --hl-eq 255 -j ACCEPT
 -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 130 -m hl --hl-eq   1 -j ACCEPT
 -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 131 -m hl --hl-eq   1 -j ACCEPT
 -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 132 -m hl --hl-eq   1 -j ACCEPT
 -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 143 -m hl --hl-eq   1 -j ACCEPT
 -A trashlog -j LOG -- log - prefix " TRASHLOG : " --log - level 5
 -A trashlog -j DROP
 COMMIT

Regeln Router

* mangle
: PREROUTING ACCEPT [ : ]
: INPUT ACCEPT [ : ]
: FORWARD ACCEPT [ : ]
: OUTPUT ACCEPT [ : ]
: POSTROUTING ACCEPT [ : ]
COMMIT
#
* filter
: INPUT DROP [ : ]
: FORWARD DROP [ : ]
: OUTPUT ACCEPT [ : ]
: bad - eh - [ : ]
: icmpv6-filter - [ : ]
: ndp-minimal - [ : ]
: trashlog - [ : ]
-A INPUT -i lo -j ACCEPT
-A INPUT -m conntrack -- ctstate RELATED , ESTABLISHED -j ACCEPT
-A INPUT -m conntrack -- ctstate INVALID -j trashlog
-A INPUT -p ipv6-icmp -j ndp-minimal
-A INPUT -i eth1 -p ipv6-icmp -m icmp6 --icmpv6-type 133 -m hl --hl-eq 255 -j ACCEPT
-A INPUT -i eth1 -p udp -m udp -- dport 53 -m conntrack -- ctstate NEW -j ACCEPT
-A INPUT -i eth1 -p tcp -m tcp -- dport 53 -m conntrack -- ctstate NEW -j ACCEPT
-A FORWARD -m conntrack -- ctstate RELATED , ESTABLISHED -j ACCEPT
-A FORWARD -p ipv6-icmp -j icmpv6-filter
-A FORWARD -i eth1 -o sixxs -m conntrack -- ctstate NEW -j ACCEPT
-A FORWARD -i eth1 -o nat64 -m conntrack -- ctstate NEW -j ACCEPT
-A OUTPUT -o lo -j ACCEPT
-A bad - eh -m rt --rt - type --rt - segsleft -j DROP
-A icmpv6-filter -s fe80::/1 -j DROP
-A icmpv6-filter -d fe80::/1 -j DROP
-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 128 -m conntrack -- ctstate NEW -j ACCEPT
-A icmpv6-filter -d 2a01:198:200:8a23:200:ff:fe60:d1e/128 -p ipv6-icmp -m icmp6 --icmpv6-type 128 -m conntrack -- ctstate NEW -j ACCEPT
-A icmpv6-filter -d ff00::/8 -p ipv6-icmp -m icmp6 --icmpv6-type 129 -j DROP
-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 2   -j ACCEPT
-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 3/1 -j ACCEPT
-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 4/0 -j ACCEPT
-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 4/1 -j ACCEPT
-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 4/2 -j ACCEPT
-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 1   -j ACCEPT
-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 3/0 -j ACCEPT
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 135 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 136 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 133 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 134 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 137 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 130 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 131 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 132 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 143 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 147 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 139 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 140 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 144 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 145 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 146 -j DROP
-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 147 -j DROP
-A icmpv6-filter -j DROP
-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 135 -m hl --hl-eq 255 -j ACCEPT
-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 136 -m hl --hl-eq 255 -j ACCEPT
-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 137 -m hl --hl-eq 255 -j ACCEPT
-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 130 -m hl --hl-eq   1 -j ACCEPT
-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 131 -m hl --hl-eq   1 -j ACCEPT
-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 132 -m hl --hl-eq   1 -j ACCEPT
-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 143 -m hl --hl-eq   1 -j ACCEPT
-A trashlog -j LOG -- log - prefix " TRASHLOG : " --log - level 5
-A trashlog -j DROP
COMMIT

Anhang

Siehe auch

IPv6/ICMPv6/Nachrichten

Links

Weblinks

@@ Zeile 1: / Zeile 1: @@
-'''{{BASEPAGENAME}}''' - Beschreibung
+'''IPv6/Firewall'''
 == Beschreibung ==
-[[File:opnsenseIPv6firewall.png|900px]]
+* Protokolle
+* Netze
-== Regeln Client ==
+== ICMP ==
- * mangle
+[[Internet Control Message Protocol]] ([[ICMP]]) ist Kernbestandteil der Internetprotokollfamilie
+* Austausch von Fehlermeldungen und Informationsnachrichten
+; IPv4
+Bei IPv4 ist es gängige Praxis, ICMP an der Firewall zu blockieren
+; Bedeutung von ICMPv6
+Für wichtige Mechanismen unerlässlich
+* z.B.[[pMTUd]]
+Eine undifferenzierte Filterung von ICMPv6 kann Erreichbarkeitsprobleme mit sich bringen
+Daher sollte bei IPv6 keine generelle Sperrung von [[ICMPv6]] erfolgen
+Folgende ICMPv6-Typen sollten zumindest teilweise zugelassen werden (vgl.&nbsp;auch [[RFC/4890]])
+* Nicht genannte Typen sollten gesperrt werden
+* Die Bezeichnungen „vom Internet“ und „zum Internet“ beziehen sich jeweils auf das System, das die Verbindung aufbaut oder deren Endpunkt darstellt (in der Regel ein [[ALG]])
+{| class="wikitable big options col2center col3center col4center"
+|-
+! IPv6-ICMP Nachricht (Typ) !! Zwischen internen Netzen !! Vom Internet !! Zum Internet
+|-
+| Destination unreachable (1) || <span style="color:green">✓</span>  || <span style="color:green">✓</span>  || <span style="color:green">✓</span>
+|-
+| Packet too big (2) || <span style="color:green">✓</span>  || <span style="color:green">✓</span>  || <span style="color:green">✓</span>
+|-
+| Time exceeded (3) || <span style="color:green">✓</span>  || <span style="color:green">✓</span>  || <span style="color:green">✓</span>
+|-
+| Parameter Problem (4) || <span style="color:green">✓</span>  || <span style="color:green">✓</span>  || <span style="color:green">✓</span>
+|-
+| Echo-Request (128) || <span style="color:green">✓</span> <sup>1</sup>|| <span style="color:red">✗</span>  || <span style="color:green">✓</span> <sup>1</sup>
+|-
+| Echo-Antwort (129) || <span style="color:green">✓</span> <sup>2</sup>|| <span style="color:green">✓</span> <sup>2</sup>|| <span style="color:red">✗</span>
+|-
+| Multicast (130-132, 143, 151-153) || <span style="color:green">✓</span> <sup>3</sup>|| <span style="color:green">✓</span> <sup>3</sup>|| <span style="color:green">✓</span> <sup>3</sup>
+|-
+| Router (133, 134) || <span style="color:green">✓</span> <sup>3</sup>|| <span style="color:red">✗</span>  || <span style="color:red">✗</span>
+|-
+| Neighbor (135,136) || <span style="color:green">✓</span> <sup>3</sup>|| <span style="color:green">✓</span> <sup>3</sup>|| <span style="color:green">✓</span> <sup>3</sup>
+|-
+| Redirect (137) || <span style="color:green">✓</span> <sup>3/4</sup>|| <span style="color:red">✗</span>  || <span style="color:red">✗</span>
+|-
+| ICMP-Information (139) || <span style="color:green">✓</span> <sup>1</sup>|| <span style="color:red">✗</span>  || <span style="color:red">✗</span>
+|-
+| ICMP-Information (140) || <span style="color:green">✓</span> <sup>2</sup>|| <span style="color:red">✗</span>  || <span style="color:red">✗</span>
+|-
+| Reverse-Neighbor (141) || <span style="color:green">✓</span> <sup>1</sup>|| <span style="color:red">✗</span>  || <span style="color:red">✗</span>
+|-
+| Reverse-Neighbor (142) || <span style="color:green">✓</span> <sup>2</sup>|| <span style="color:red">✗</span>  || <span style="color:red">✗</span>
+|}
+; Legende
+* 1 = von der Management-Station aus
+* 2 = zur Management-Station hin
+* 3 = ohne Forwarding
+* 4 = ausgehend vom Router
+Quelle
+* https://www.allianz-fuer-cybersicherheit.de/SharedDocs/Downloads/Webs/ACS/DE/BSI-CS/BSI-CS_057.pdf?__blob=publicationFile&v=1
+== OPNsense ==
+[[File:opnsenseIPv6firewall.png|950px]]
+== iptables ==
+=== Regeln Client ===
+<syntaxhighlight lang="bash" line highlight="15-30" copy="">* mangle
   : PREROUTING ACCEPT [ : ]
   : INPUT ACCEPT [ : ]
@@ Zeile 17: / Zeile 85: @@
   : FORWARD DROP [ : ]
   : OUTPUT ACCEPT [ : ]
-  : ndp - slaac - [ : ]
+  : ndp-slaac - [ : ]
   : trashlog - [ : ]
   -A INPUT -i lo -j ACCEPT
   -A INPUT -m conntrack -- ctstate INVALID -j trashlog
   -A INPUT -m conntrack -- ctstate RELATED , ESTABLISHED -j ACCEPT
-  -A INPUT -p ipv6 - icmp -j ndp - slaac
+  -A INPUT -p ipv6-icmp -j ndp-slaac
-  -A INPUT -s fe80::/1 -d fe80::/1 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 128 -m conntrack -- ctstate NEW -j ACCEPT
+  -A INPUT -s fe80::/1 -d fe80::/10 -p ipv6-icmp -m icmp6 --icmpv6-type 128 -m conntrack -- ctstate NEW -j ACCEPT
   -A INPUT -s fe80::/1 -p tcp -m tcp -- dport 22 -m conntrack -- ctstate NEW -j ACCEPT
   -A OUTPUT -o lo -j ACCEPT
-  -A ndp - slaac -p ipv6 - icmp -m icmp6 -- icmpv6 - type 133 -m hl --hl - eq 255 -j ACCEPT
+  -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 133 -m hl --hl-eq 255 -j ACCEPT
-  -A ndp - slaac -p ipv6 - icmp -m icmp6 -- icmpv6 - type 134 -m hl --hl - eq 255 -j ACCEPT
+  -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 134 -m hl --hl-eq 255 -j ACCEPT
-  -A ndp - slaac -p ipv6 - icmp -m icmp6 -- icmpv6 - type 135 -m hl --hl - eq 255 -j ACCEPT
+  -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 135 -m hl --hl-eq 255 -j ACCEPT
-  -A ndp - slaac -p ipv6 - icmp -m icmp6 -- icmpv6 - type 136 -m hl --hl - eq 255 -j ACCEPT
+  -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 136 -m hl --hl-eq 255 -j ACCEPT
-  -A ndp - slaac -p ipv6 - icmp -m icmp6 -- icmpv6 - type 137 -m hl --hl - eq 255 -j ACCEPT
+  -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 137 -m hl --hl-eq 255 -j ACCEPT
-  -A ndp - slaac -p ipv6 - icmp -m icmp6 -- icmpv6 - type 13 -m hl --hl - eq 1 -j ACCEPT
+  -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 130 -m hl --hl-eq   1 -j ACCEPT
-  -A ndp - slaac -p ipv6 - icmp -m icmp6 -- icmpv6 - type 131 -m hl --hl - eq 1 -j ACCEPT
+  -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 131 -m hl --hl-eq   1 -j ACCEPT
-  -A ndp - slaac -p ipv6 - icmp -m icmp6 -- icmpv6 - type 132 -m hl --hl - eq 1 -j ACCEPT
+  -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 132 -m hl --hl-eq   1 -j ACCEPT
-  -A ndp - slaac -p ipv6 - icmp -m icmp6 -- icmpv6 - type 143 -m hl --hl - eq 1 -j ACCEPT
+  -A ndp-slaac -p ipv6-icmp -m icmp6 --icmpv6-type 143 -m hl --hl-eq   1 -j ACCEPT
   -A trashlog -j LOG -- log - prefix " TRASHLOG : " --log - level 5
   -A trashlog -j DROP
-  COMMIT
+  COMMIT</syntaxhighlight>
-== Regeln Router ==
+=== Regeln Router ===
- * mangle
+<syntaxhighlight lang="bash" highlight="17-65" line copy>
- : PREROUTING ACCEPT [ : ]
+* mangle
- : INPUT ACCEPT [ : ]
+: PREROUTING ACCEPT [ : ]
- : FORWARD ACCEPT [ : ]
+: INPUT ACCEPT [ : ]
- : OUTPUT ACCEPT [ : ]
+: FORWARD ACCEPT [ : ]
- : POSTROUTING ACCEPT [ : ]
+: OUTPUT ACCEPT [ : ]
- COMMIT
+: POSTROUTING ACCEPT [ : ]
- #
+COMMIT
- * filter
+#
- : INPUT DROP [ : ]
+* filter
- : FORWARD DROP [ : ]
+: INPUT DROP [ : ]
- : OUTPUT ACCEPT [ : ]
+: FORWARD DROP [ : ]
- : bad - eh - [ : ]
+: OUTPUT ACCEPT [ : ]
- : icmpv6 - filter - [ : ]
+: bad - eh - [ : ]
- : ndp - minimal - [ : ]
+: icmpv6-filter - [ : ]
- : trashlog - [ : ]
+: ndp-minimal - [ : ]
- -A INPUT -i lo -j ACCEPT
+: trashlog - [ : ]
- -A INPUT -m conntrack -- ctstate RELATED , ESTABLISHED -j ACCEPT
+-A INPUT -i lo -j ACCEPT
- -A INPUT -m conntrack -- ctstate INVALID -j trashlog
+-A INPUT -m conntrack -- ctstate RELATED , ESTABLISHED -j ACCEPT
- -A INPUT -p ipv6 - icmp -j ndp - minimal
+-A INPUT -m conntrack -- ctstate INVALID -j trashlog
- -A INPUT -i eth1 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 133 -m hl --hl - eq 255 -j ACCEPT
+-A INPUT -p ipv6-icmp -j ndp-minimal
- -A INPUT -i eth1 -p udp -m udp -- dport 53 -m conntrack -- ctstate NEW -j ACCEPT
+-A INPUT -i eth1 -p ipv6-icmp -m icmp6 --icmpv6-type 133 -m hl --hl-eq 255 -j ACCEPT
- -A INPUT -i eth1 -p tcp -m tcp -- dport 53 -m conntrack -- ctstate NEW -j ACCEPT
+-A INPUT -i eth1 -p udp -m udp -- dport 53 -m conntrack -- ctstate NEW -j ACCEPT
- -A FORWARD -m conntrack -- ctstate RELATED , ESTABLISHED -j ACCEPT
+-A INPUT -i eth1 -p tcp -m tcp -- dport 53 -m conntrack -- ctstate NEW -j ACCEPT
- -A FORWARD -p ipv6 - icmp -j icmpv6 - filter
+-A FORWARD -m conntrack -- ctstate RELATED , ESTABLISHED -j ACCEPT
- -A FORWARD -i eth1 -o sixxs -m conntrack -- ctstate NEW -j ACCEPT
+-A FORWARD -p ipv6-icmp -j icmpv6-filter
- -A FORWARD -i eth1 -o nat64 -m conntrack -- ctstate NEW -j ACCEPT
+-A FORWARD -i eth1 -o sixxs -m conntrack -- ctstate NEW -j ACCEPT
- -A OUTPUT -o lo -j ACCEPT
+-A FORWARD -i eth1 -o nat64 -m conntrack -- ctstate NEW -j ACCEPT
- -A bad - eh -m rt --rt - type --rt - segsleft -j DROP
+-A OUTPUT -o lo -j ACCEPT
- -A icmpv6 - filter -s fe80::/1 -j DROP
+-A bad - eh -m rt --rt - type --rt - segsleft -j DROP
- -A icmpv6 - filter -d fe80::/1 -j DROP
+-A icmpv6-filter -s fe80::/1 -j DROP
- -A icmpv6 - filter -s 2 a 1 :198:2 :8 a23 ::/64 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 128 -m conntrack -- ctstate NEW -j ACCEPT
+-A icmpv6-filter -d fe80::/1 -j DROP
- -A icmpv6 - filter -d 2 a 1 :198:2 :8 a23 :2 : ff : fe6 : d1e /128 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 128 -m conntrack -- ctstate NEW -j ACCEPT
+-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 128 -m conntrack -- ctstate NEW -j ACCEPT
- -A icmpv6 - filter -d ff ::/8 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 129 -j DROP
+-A icmpv6-filter -d 2a01:198:200:8a23:200:ff:fe60:d1e/128 -p ipv6-icmp -m icmp6 --icmpv6-type 128 -m conntrack -- ctstate NEW -j ACCEPT
- -A icmpv6 - filter -s 2 a 1 :198:2 :8 a23 ::/64 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 2 -j ACCEPT
+-A icmpv6-filter -d ff00::/8 -p ipv6-icmp -m icmp6 --icmpv6-type 129 -j DROP
- -A icmpv6 - filter -s 2 a 1 :198:2 :8 a23 ::/64 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 3/1 -j ACCEPT
+-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 2   -j ACCEPT
- -A icmpv6 - filter -s 2 a 1 :198:2 :8 a23 ::/64 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 4/ -j ACCEPT
+-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 3/1 -j ACCEPT
- -A icmpv6 - filter -s 2 a 1 :198:2 :8 a23 ::/64 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 4/1 -j ACCEPT
+-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 4/0 -j ACCEPT
- -A icmpv6 - filter -s 2 a 1 :198:2 :8 a23 ::/64 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 4/2 -j ACCEPT
+-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 4/1 -j ACCEPT
- -A icmpv6 - filter -s 2 a 1 :198:2 :8 a23 ::/64 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 1 -j ACCEPT
+-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 4/2 -j ACCEPT
- -A icmpv6 - filter -s 2 a 1 :198:2 :8 a23 ::/64 -p ipv6 - icmp -m icmp6 -- icmpv6 - type 3/ -j ACCEPT
+-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 1   -j ACCEPT
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 135 -j DROP
+-A icmpv6-filter -s 2a01:198:200:8a23::/64 -p ipv6-icmp -m icmp6 --icmpv6-type 3/0 -j ACCEPT
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 136 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 135 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 133 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 136 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 134 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 133 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 137 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 134 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type  13 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 137 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 131 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 130 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 132 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 131 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 143 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 132 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 147 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 143 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 139 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 147 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type  14 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 139 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 144 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 140 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 145 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 144 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 146 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 145 -j DROP
- -A icmpv6 - filter -p ipv6 - icmp -m icmp6 -- icmpv6 - type 147 -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 146 -j DROP
- -A icmpv6 - filter -j DROP
+-A icmpv6-filter -p ipv6-icmp -m icmp6 --icmpv6-type 147 -j DROP
- -A ndp - minimal -p ipv6 - icmp -m icmp6 -- icmpv6 - type 135 -m hl --hl - eq 255 -j ACCEPT
+-A icmpv6-filter -j DROP
- -A ndp - minimal -p ipv6 - icmp -m icmp6 -- icmpv6 - type 136 -m hl --hl - eq 255 -j ACCEPT
+-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 135 -m hl --hl-eq 255 -j ACCEPT
- -A ndp - minimal -p ipv6 - icmp -m icmp6 -- icmpv6 - type 137 -m hl --hl - eq 255 -j ACCEPT
+-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 136 -m hl --hl-eq 255 -j ACCEPT
- -A ndp - minimal -p ipv6 - icmp -m icmp6 -- icmpv6 - type  13 -m hl --hl - eq   1 -j ACCEPT
+-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 137 -m hl --hl-eq 255 -j ACCEPT
- -A ndp - minimal -p ipv6 - icmp -m icmp6 -- icmpv6 - type 131 -m hl --hl - eq   1 -j ACCEPT
+-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 130 -m hl --hl-eq   1 -j ACCEPT
- -A ndp - minimal -p ipv6 - icmp -m icmp6 -- icmpv6 - type 132 -m hl --hl - eq   1 -j ACCEPT
+-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 131 -m hl --hl-eq   1 -j ACCEPT
- -A ndp - minimal -p ipv6 - icmp -m icmp6 -- icmpv6 - type 143 -m hl --hl - eq   1 -j ACCEPT
+-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 132 -m hl --hl-eq   1 -j ACCEPT
- -A trashlog -j LOG -- log - prefix " TRASHLOG : " --log - level 5
+-A ndp-minimal -p ipv6-icmp -m icmp6 --icmpv6-type 143 -m hl --hl-eq   1 -j ACCEPT
- -A trashlog -j DROP
+-A trashlog -j LOG -- log - prefix " TRASHLOG : " --log - level 5
- COMMIT
+-A trashlog -j DROP
+COMMIT
+</syntaxhighlight>
 <noinclude>
 == Anhang ==
 === Siehe auch ===
-<div style="column-count:3">
+* [[IPv6/ICMPv6/Nachrichten]]
+----
+<div style="column-count:2">
 <categorytree hideroot=on mode="pages">{{BASEPAGENAME}}</categorytree>
 </div>
@@ Zeile 121: / Zeile 194: @@
 ==== Weblinks ====
-{{DEFAULTSORT:new}}
+[[Kategorie:IPv6/Firewall]]
-{{DISPLAYTITLE:new}}
-[[Kategorie:new]]
 </noinclude>
-[[Kategorie:IPv6/Firewall]]